☆ 4.8 Review

Recent Progress of Nanostructured Sensing Materials from 0D to 3D: Overview of Structure-Property-Application Relationship for Gas Sensors

SMALL METHODS (2021)

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Article Polymer Science

Effect of Al and Mg Co-doping on the Microstructural and Gas-Sensing Characteristics of ZnO Nanoparticles

S. Jaballah et al.

Summary: Al and Mg co-doped ZnO nanoparticles were synthesized using the sol-gel technique for carbon oxide detection. The study discussed the impact of Al and Mg on the structural, morphological, and optical properties of the nanoparticles. The co-doped ZnO films showed enhanced sensing properties for carbon oxides compared to undoped ZnO films.

JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS (2021)

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Article Chemistry, Multidisciplinary

Tailored Graphene Micropatterns by Wafer-Scale Direct Transfer for Flexible Chemical Sensor Platform

Yeonhoo Kim et al.

Summary: This study demonstrates a novel strategy to obtain micropatterned graphene on polymer substrates using a direct curing process, leading to the fabrication of fully flexible, transparent, self-activated graphene sensor arrays. The potential of this patterning technique to maximize the performance of sensor devices based on 2D materials is shown through finite element method simulations. Overall, this research significantly contributes to the development of flexible functional electronic devices utilizing 2D materials.

ADVANCED MATERIALS (2021)

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Article Chemistry, Analytical

Quantum dots: Perspectives in next-generation chemical gas sensors - A review

Vardan Galstyan

Summary: Research on quantum dot chemical sensors shows promising sensing performance as the structures are integrated into sensing technologies. Therefore, intensive studies on the influence of synthesis procedures and additive materials on the sensing performance of quantum dots are crucial for further advancements.

ANALYTICA CHIMICA ACTA (2021)

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Article Chemistry, Physical

Ultrasensitive ethanol sensor based on segregated ZnO-In2O3 porous nanosheets

Wenjun Yan et al.

Summary: This study synthesized segregated ZnO-In2O3 porous nanosheets via a one-pot solvothermal method, which showed remarkable ethanol sensing performance with low LOD, short response/recovery time, long-term stability, and selectivity. The findings provide a promising prospect for practical applications of ZnO-In2O3 ethanol sensors.

APPLIED SURFACE SCIENCE (2021)

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Article Chemistry, Physical

Porous γ-Fe2O3 nanoparticle decorated with atomically dispersed platinum: Study on atomic site structural change and gas sensor activity evolution

Qiheng Li et al.

Summary: Decorating semi-conducting metal oxide with noble metal single atom sites has been proven to be an effective way to improve the sensitivity and selectivity of gas sensors. The atomically dispersed platinum on one-dimensional arranged porous gamma-Fe2O3 nanoparticle composites showed high response and good selectivity to ethanol gas, indicating the potential for ISAS-enhanced gas sensors for other volatile organic compounds (VOCs). This work highlights the importance of noble metal single atom sites in enhancing the performance of metal oxide gas sensors.

NANO RESEARCH (2021)

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Article Materials Science, Multidisciplinary

Rare earth element-doped porous In2O3 nanosheets for enhanced gas-sensing performance

Wen-Hui Zhang et al.

Summary: Rare earth-doped porous In2O3 nanosheets significantly improve gas-sensing performance, with 6% Yb-doped In2O3 nanosheets exhibiting the best gas-sensing performance, characterized by fast response and recovery time, excellent selectivity, and stability, showing potential for next-generation gas sensor applications.

RARE METALS (2021)

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Article Chemistry, Analytical

Binder-free CuO nanoneedle arrays based tube-type sensor for H2S gas sensing

Qiang Hu et al.

Summary: CuO nanoneedle arrays sensor prepared without binders exhibit high specific surface area and decent response, but sensitive to humidity. It also shows good selectivity and stability to low concentration of H2S.

SENSORS AND ACTUATORS B-CHEMICAL (2021)

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Article Chemistry, Analytical

Highly selective room temperature ammonia sensors based on ZnO nanostructures decorated with graphene quantum dots (GQDs)

Ekasiddh Wongrat et al.

Summary: This study presents a highly selective ammonia sensor based on ZnO nanostructures and graphene quantum dots (GQDs), which showed optimal sensor responses at room temperature. The ammonia sensing properties of ZnO:GQDs sensors are attributed to the presence of specific functional groups on the GQDs, contributing to their high responsiveness and selectivity.

SENSORS AND ACTUATORS B-CHEMICAL (2021)

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Article Chemistry, Analytical

Flexible resistive NO2 gas sensor of three-dimensional crumpled MXene Ti3C2Tx/ZnO spheres for room temperature application

Zijie Yang et al.

Summary: In this study, a room-temperature flexible NO2 sensor based on three-dimensional crumpled MXene sphere prepared by ultrasonic spray pyrolysis technology is developed. The performance is further improved by designing 3D crumpled MXene sphere/ZnO composites sensitive electrode with high specific surface area and active sites. The excellent NO2 sensing properties are attributed to the high surface area, abundance of edges and defects, and the formation of MXene/ZnO p-n heterojunction.

SENSORS AND ACTUATORS B-CHEMICAL (2021)

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Article Chemistry, Analytical

Mesoporous ZnO nanosheets with rich surface oxygen vacancies for UV-activated methane gas sensing at room temperature

Jing Wang et al.

Summary: Mesoporous ZnO nanosheets with rich surface oxygen vacancies showed enhanced CH4 gas sensing properties under UV illumination, correlating to their improved photocatalytic oxidation activity induced by surface V-O. The generation of active centers and oxygen species was promoted by the rich surface V-O, as confirmed by in-situ electron paramagnetic resonance and O-2 temperature programmed desorption analysis. Additionally, density functional theory calculations suggested that V-O could enhance the surface charge density of ZnO and lower the Gibbs free energy for CH4 activation on the ZnO surface.

SENSORS AND ACTUATORS B-CHEMICAL (2021)

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Article Chemistry, Analytical

Hydrogen sensing characteristics of Pd-decorated ultrathin ZnO nanosheets

Jae-Hun Kim et al.

Summary: The study utilized pristine and Pd-decorated 2D ZnO nanosheets for hydrogen detection, showing positive effects of Pd decoration on response, sensing temperature, and selectivity. Gas sensing experiments demonstrated that the Pd-decorated nanosheet sensor successfully detected low concentrations of hydrogen gas and could also detect hydrogen in a gaseous mixture with benzene. Furthermore, the presence of Pd-ZnO heterojunctions, formation of PdHx, and high catalytic activity of Pd were found to contribute to the sensing enhancement of the Pd-decorated sensor.

SENSORS AND ACTUATORS B-CHEMICAL (2021)

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Article Chemistry, Analytical

MXene/SnO2 heterojunction based chemical gas sensors

Tingting He et al.

Summary: The 2D MXene/SnO2 heterojunction-based chemiresistive sensor shows excellent sensitivity and selectivity to NH3, with the sensing properties attributed to MXene's unique adsorption ability and conductivity, and the Fermi level difference between MXene and SnO2 driving charge transfer to enhance sensitivity. Additionally, a wireless sensor utilizing low-temperature cofired ceramic technique demonstrates fast response/recovery speeds and stable response to ammonia concentrations, showing promising practical application potential.

SENSORS AND ACTUATORS B-CHEMICAL (2021)

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Article Chemistry, Analytical

Soft-lithographically line-patterned In-doped ZnO quantum dots with hydrothermally grown ZnO nanocolumns for acetone detection

Jun Ho Lee et al.

Summary: Through experiments and analysis, researchers have successfully developed highly sensitive acetone sensors. Among the four different sensors, the NC(0.5 h)/Line sensor exhibited the best response capability, with a low detection limit as well.

SENSORS AND ACTUATORS B-CHEMICAL (2021)

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Article Chemistry, Analytical

Novel microrecycled ZnO nanoparticles decorated macroporous 3D graphene hybrid aerogel for efficient detection of NO2 at room temperature

Kamrul Hassan et al.

Summary: A novel macroporous microrecycled ZnO nanoparticles decorated three-dimensional graphene aerogel hybrid material has been synthesized via an eco-friendly synthetic method. This hybrid structure shows elevated NO2 sensing performance with fast response-recovery time, superior selectivity, and repeatability at room temperature. The improved conductivity and porous structure of graphene, as well as the interaction between p-type graphene and n-type zinc oxide, contribute to the enhanced NO2 sensing properties of this sensor.

SENSORS AND ACTUATORS B-CHEMICAL (2021)

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Article Chemistry, Analytical

2D layer assembly of Pt-ZnO nanoparticles on reduced graphene oxide for flexible NO2 sensors

Joon-Young Kang et al.

Summary: The study demonstrates the heterogeneous sensitization of nanocatalysts using Pt and ZnO nanoparticles (NPs) on porous reduced graphene oxides (Pt_ZnO/PRGO) driven by a metal-organic framework (MOF)-templated synthesis and subsequent pyrolysis. Pt_ZnO/PRGO showed improved NO2 sensing properties with increased reaction sites and controllable size of ZnO NPs, exhibiting reversible reaction kinetics. The potential applications of MOF-derived Pt_ZnO/PRGO in wearable chemical sensors were showcased, highlighting excellent mechanical stability and reliable response.

SENSORS AND ACTUATORS B-CHEMICAL (2021)

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Article Chemistry, Analytical

Enhanced ammonia sensing properties of rGO/WS2 heterojunction based chemiresistive sensor by marginal sulfonate decoration

Xueyan Wang et al.

Summary: Through sulfonation and incorporation of WS2 nanoflakes, the sensitivity of rGO-based ammonia sensor at room temperature has been significantly improved. The S-rGO/WS2 sensor exhibits enhanced response signals to ammonia and significantly shortened response/recovery time compared to previous rGO/WS2 sensors.

SENSORS AND ACTUATORS B-CHEMICAL (2021)

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Article Chemistry, Inorganic & Nuclear

Ultralow-detection limit ammonia gas sensors at room temperature based on MWCNT/WO3 nanocomposite and effect of humidity

Vu Truong Duong et al.

Summary: Nanocomposite-based NH3 gas sensors, composed of MWCNTs and WO3 nanobricks, show enhanced gas sensing characteristics with high response, ultralow limit of detection, and selectivity to NH3. The synergistic effect of p-p junction between MWCNT and WO3 surface inversion layer is responsible for the enhanced gas sensing characteristics, with response increasing as relative humidity rises.

SOLID STATE SCIENCES (2021)

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Article Materials Science, Multidisciplinary

Fabrication of ZnO-MWCNT nanocomposite sensor and investigation of its ammonia gas sensing properties at room temperature

Leila Vatandoust et al.

Summary: Ammonia is a hazardous gas that plays a vital role in industry. A study on ZnO-MWCNT nanocomposite shows that it has a rough surface which increases the sensor's surface area and contact probability with gas. The sensor demonstrates higher and more stable sensitivity to NH3 compared to ZnO sensor, but low sensitivity to CH4 and CO.

SYNTHETIC METALS (2021)

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Article Chemistry, Multidisciplinary

Highly Sensitive and Selective NiO/WO3 Composite Nanoparticles in Detecting H2S Biomarker of Halitosis

Dongliang Feng et al.

Summary: A highly sensitive and selective NiO/WO3 nanoparticles sensor has been developed for the detection of hydrogen sulfide (H2S), showing superior performance compared to conventional sensors and potential for future medical applications.

ACS SENSORS (2021)

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Article Chemistry, Multidisciplinary

Humidity-Initiated Gas Sensors for Volatile Organic Compounds Sensing

Maxwell T. Robinson et al.

Summary: The humidity-initiated gas (HIG) sensors employ the impedance of water assembled at sensor interfaces when exposed to humidity to sense VOCs at low concentrations. Type II sensors outperform Type I sensors in terms of key performance metrics, achieving <2 min response times and <10 ppb detection limit for VOCs.

ADVANCED FUNCTIONAL MATERIALS (2021)

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Review Chemistry, Multidisciplinary

Hydrogen Gas Sensors Using Palladium Nanogaps on an Elastomeric Substrate

Hyun-Sook Lee et al.

Summary: With the revival of the global hydrogen economy, the demand for H-2 sensors is expected to rise rapidly. Pd-based materials are widely used for developing H-2 sensors, with Pd nanogap-based sensors showing excellent capabilities in sensing improvement.

ADVANCED MATERIALS (2021)

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Review Agriculture, Multidisciplinary

Nanomaterials Enabled and Bio/Chemical Analytical Sensors for Acrylamide Detection in Thermally Processed Foods: Advances and Outlook

Mirinal Kumar Rayappa et al.

Summary: This review discusses the latest developments in robust nanomaterials-based and other bio/chemical sensor fabrication techniques, sensing mechanisms, and the selective qualitative and quantitative measurement of acrylamide in various food materials. Analytical measurements include diverse and disparate optical, electrochemical, and piezoelectric methods.

JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY (2021)

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Article Chemistry, Physical

0D/2D CdS/ZnO composite with n-n heterojunction for efficient detection of triethylamine

Jingjing Liu et al.

Summary: A novel CdS/ZnO composite with 0D/2D structure was successfully fabricated as an outstanding triethylamine sensor, exhibiting low operating temperature, high response value, fast response time, durable stability, excellent selectivity, and superior anti-interference ability. The enhanced gas sensing properties were attributed to the splendid 0D/2D structure, n-n heterojunction, and large specific surface area. This study paves the way for designing sensors with 0D/2D structure.

JOURNAL OF COLLOID AND INTERFACE SCIENCE (2021)

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Article Chemistry, Analytical

Hollow hierarchical TiO2-SnO2-TiO2 composite nanofibers with increased active-sites and charge transfer for enhanced acetone sensing performance

Tingting Wang et al.

Summary: The hollow TiO2-SnO2-TiO2 composite nanofibers were successfully synthesized using a two-step method, showing excellent gas sensing performance and high selectivity at low operating temperatures, attributed to their hollow structure and n-n heterojunction.

SENSORS AND ACTUATORS B-CHEMICAL (2021)

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Article Chemistry, Analytical

Ni-doped SnO2/g-C3N4 nanocomposite with enhanced gas sensing performance for the eff;ective detection of acetone in diabetes diagnosis

Weiwei Guo et al.

Summary: The study utilized calcining and hydrothermal method to grow highly ordered Ni-doped SnO2 nanosheets onto g-C3N4 lamina, resulting in a Ni-SnO2/g-C3N4 composite with high sensitivity and good stability for detecting acetone, showing potential for diabetes diagnosis.

SENSORS AND ACTUATORS B-CHEMICAL (2021)

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Article Chemistry, Multidisciplinary

A Transparent Nanopatterned Chemiresistor: Visible-Light Plasmonic Sensor for Trace-Level NO2 Detection at Room Temperature

Kyeorei Lim et al.

Summary: Transparent nanopatterned chemiresistors composed of aligned 1D Au-SnO2 nanofibers demonstrated highly selective detection of toxic NO2 gas at room temperature under visible light illumination. The sensors, with extremely low coverage of sensing materials and high transparency, can detect NO2 at sub-ppm levels with a detection limit as low as 6 ppb. The design, utilizing localized surface plasmonic resonance effect of Au nanoparticles, allows for room-temperature NO2 sensing without the need for external heaters or light sources, opening up new possibilities for transparent oxide-based gas sensors.

SMALL (2021)

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Review Chemistry, Multidisciplinary

Chemiresistive Gas Sensors Based on Hollow Heterojunction: A Review

Yanna Liu et al.

Summary: This paper reviews the gas sensing mechanism of chemiresistive sensors, as well as the role of hollow and heterojunction structures in enhancing sensing performance. It discusses the single-shelled and multi-shelled hollow heterojunction materials used in gas detection, and explores the design and application of open hollow heterojunction in gas sensing.

ADVANCED MATERIALS INTERFACES (2021)

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Article Nanoscience & Nanotechnology

General Strategy to Fabricate Porous Co-Based Bimetallic Metal Oxide Nanosheets for High-Performance CO Sensing

Cong Qin et al.

Summary: This study presents a general strategy for fabricating porous bimetallic oxide nanosheets with adjustable composition ratios, showing excellent gas sensing performance, particularly with high response rates at low temperatures.

ACS APPLIED MATERIALS & INTERFACES (2021)

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Article Chemistry, Physical

Characteristics of highly sensitive and selective nitric oxide gas sensors using defect-functionalized single-walled carbon nanotubes at room temperature

Da-Woon Jeong et al.

Summary: One important trend in modern medicine is the development of non-invasive methods for diagnosing diseases by analyzing specific gases from human exhalation. The use of nanosensors to detect various diseases through examining nitric oxide (NO) has been increasingly studied. A semiconductor-type gas sensor utilizing single-walled carbon nanotubes (SWNTs) has been developed to detect NO gas with high sensitivity and selectivity.

APPLIED SURFACE SCIENCE (2021)

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Article Chemistry, Physical

Flower-like Co3O4 sensor with rich oxygen vacancy defects for enhancing room temperature NOx sensing performances

Huiling Liu et al.

Summary: Flower-like Co3O4 microspheres composed of thin nanosheets were successfully synthesized, showing high gas sensitivity with a response of 72.3% to 100 ppm NOx and a detection limit lower than 70 ppb. The outstanding performance can be attributed to its unique structure and surface oxygen vacancies.

JOURNAL OF ALLOYS AND COMPOUNDS (2021)

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Article Chemistry, Physical

Absorbent cotton derived mesoporous CeO2 hollow tubule for enhanced detection of p-xylene at low energy consumption

Jing-Shuo Liu et al.

Summary: Mesoporous CeO2 hollow microtubules show high sensitivity to p-xylene gas at low operating temperature, with fast response time and low detection limit. This excellent gas-sensing performance is attributed to the structural properties and oxygen vacancy defects of the material.

JOURNAL OF ALLOYS AND COMPOUNDS (2021)

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Article Chemistry, Physical

Microwave-assisted synthesis of hierarchically porous Co3O4/rGO nanocomposite for low-temperature acetone detection

Yawu Gao et al.

Summary: A novel porous 3D hierarchical Co3O4/rGO nanocomposite with high response and selectivity for acetone detection was synthesized using a microwave-assisted method. The optimized sample exhibited the highest stability and response to acetone at a relatively low temperature. The enhanced sensing performance can be attributed to the unique structure and Co3O4/rGO p-p heterojunction.

JOURNAL OF COLLOID AND INTERFACE SCIENCE (2021)

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Article Chemistry, Physical

Enhanced ammonia sensing performance based on MXene-Ti3C2Tx multilayer nanoflakes functionalized by tungsten trioxide nanoparticles

Xuezheng Guo et al.

Summary: A Ti3C2Tx/WO3 composite resistive sensor is developed with high sensitivity for NH3 detection at room temperature, showing a sensitivity 15.4 times higher than pure Ti3C2Tx sensor. The composite sensor exhibits excellent reproducibility, good long-term stability, and high selectivity to NH3, and the influence of relative humidity on NH3 gas sensing properties of the sensors is systematically studied.

JOURNAL OF COLLOID AND INTERFACE SCIENCE (2021)

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Article Engineering, Environmental

The effect of different crystalline phases of In2O3 on the ozone sensing performance

Ning Sui et al.

Summary: Regulating crystalline phases can optimize the band gap of gas sensing materials, leading to increased chemisorbed gas molecules and improved sensitivity. This study demonstrated that narrowing the band gap and enriching chemisorbed oxygen can significantly enhance the performance of ozone sensors. The results inspire new perspectives for designing highly sensitive and reliable ozone sensors.

JOURNAL OF HAZARDOUS MATERIALS (2021)

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Article Engineering, Environmental

Multishelled NiO/NiCo2O4 hollow microspheres derived from bimetal-organic frameworks as high-performance sensing material for acetone detection

Qiong Chen et al.

Summary: The study focused on synthesizing multishelled NiO/NiCo2O4 hollow microspheres using bimetal-organic frameworks of Ni-Co-BTC as a template, which exhibited high sensitivity and rapid response/recovery time to acetone gas at low working temperature. The enhanced performance was attributed to the efficient diffusion path, nanoscale p-p heterojunctions, and the combination of chemical and electrical catalytic effects.

JOURNAL OF HAZARDOUS MATERIALS (2021)

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Article Chemistry, Analytical

Flexible MXene/rGO/CuO hybrid aerogels for high performance acetone sensing at room temperature

Miao Liu et al.

Summary: In this study, a high-performance room temperature gas-sensing material was successfully developed by utilizing MXene and reduced graphene oxide as building blocks. The resulting 3D aerogel shows excellent acetone-sensing performance at room temperature, with fast response and recovery times, as well as good reproducibility and selectivity. This strategy of composite 3D graphene/MXene architectures with metal oxide semiconductors provides a new pathway for future development of room temperature gas sensors.

SENSORS AND ACTUATORS B-CHEMICAL (2021)

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Article Chemistry, Analytical

N-pentanol sensor based on ZnO nanorods functionalized with Au catalysts

Hongtao Wang et al.

Summary: In this study, a series of Au nanoparticles functionalized ZnO nanorods were prepared, achieving real-time monitoring of n-pentanol with high response and stability.

SENSORS AND ACTUATORS B-CHEMICAL (2021)

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Article Chemistry, Analytical

Enhanced n-butanol sensing performance of SnO2-based gas sensors by doping In2O3 via co-precipitation method

Dongmin An et al.

Summary: In2O3-SnO2 nanocomposites were synthesized using a hydrothermal co-precipitation method and calcination treatment, leading to improved dispersion and increased surface area of SnO2 nanomaterials with the doping of a small amount of In2O3. Gas sensors based on these nanocomposites showed enhanced gas response towards n-butanol gas with reduced operating temperature, possibly due to a synergistic effect between In2O3 and SnO2.

SENSORS AND ACTUATORS B-CHEMICAL (2021)

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Article Chemistry, Analytical

A room-temperature NO2 gas sensor based on CuO nanoflakes modified with rGO nanosheets

Haineng Bai et al.

Summary: A gas sensor utilizing CuO/rGO nanoflakes was successfully developed for detecting ppb-level NO2 gas at room temperature. The sensor demonstrated ultrahigh response behavior, fast response time, reliability, and long-term stability. The improved gas-sensing response was attributed to synergistic effects between CuO and rGO.

SENSORS AND ACTUATORS B-CHEMICAL (2021)

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Article Chemistry, Analytical

Cr-doped NiO nanoparticles as selective and stable gas sensor for ppb-level detection of benzyl mercaptan

Peipei Li et al.

Summary: A high-performance MOS gas sensor based on Cr-doped NiO nanoparticles was reported for the detection of ppb-level benzyl mercaptan, showing excellent selectivity against interfering VOCs and remarkable stability after long-term measurements. The superior performance of the sensor can be attributed to the electron transfer among Ni-O-Cr bonds, defective oxygen, and chemical adsorption oxygen after Cr doping.

SENSORS AND ACTUATORS B-CHEMICAL (2021)

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Article Chemistry, Analytical

Facile and fast decoration of SnO2 nanowires with Pd embedded SnO2-x nanoparticles for selective NO2 gas sensing

Myung Sik Choi et al.

Summary: This study proposed a method to enhance the gas sensing properties of metal oxide nanowires by preparing Pd metal catalyst surrounded by SnO2-x with structural defects on the surface of SnO2 nanowires. Gas sensing studies demonstrated the promising effects of this approach, showing the usefulness of significantly enhancing the gas sensing properties.

SENSORS AND ACTUATORS B-CHEMICAL (2021)

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Article Chemistry, Analytical

UV excited gas sensing SnO2-ZnO aerogels to ppb-level ethanol detection

Haokun Li et al.

Summary: This study successfully achieved ultra-low response concentration detection of ethanol by synthesizing 3D SnO2-ZnO aerogels and utilizing UV light to motivate lower response concentration. The research also indicates that SnO2-ZnO aerogels exhibit fast response time, short recovery time, and good stability under UV irradiation conditions, making them suitable for gas sensors.

SENSORS AND ACTUATORS B-CHEMICAL (2021)

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Article Chemistry, Analytical

Sn doping effect on NiO hollow nanofibers based gas sensors about the humidity dependence for triethylamine detection

Jiaqi Yang et al.

Summary: A series of high stable gas sensors were prepared by doping Sn into NiO nanofibers, showing enhanced gas response and reduced crystal size. Sn doping altered the resistance of the sensors differently under variable relative humidity conditions, with the sensor exhibiting the highest response to triethylamine at 6% Sn doping content.

SENSORS AND ACTUATORS B-CHEMICAL (2021)

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Article Chemistry, Analytical

Selective ppb-level ozone gas sensor based on hierarchical branch-like In2O3 nanostructure

Ning Sui et al.

Summary: This study successfully achieved high-sensitivity detection of ozone by designing and preparing hierarchical branch-like B-In2O3 nanomaterials. The sensor exhibited fast response and low detection limit of 30 ppb, making it a potential platform for highly sensitive and ppb-level O-3 detection.

SENSORS AND ACTUATORS B-CHEMICAL (2021)

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Article Chemistry, Analytical

Nitrogen-doped graphene quantum dots-modified mesoporous SnO2 hierarchical hollow cubes for low temperature detection of nitrogen dioxide

Ya-Kun Lv et al.

Summary: A novel SnO2 hierarchical hollow cube with nitrogen-doped graphene quantum dots modification was prepared via a simple sulfidation-oxidation method in this study, showing improved response and detection ability for NO2 gas sensor applications. The enhanced sensing performance was attributed to the zero-dimensional/three-dimensional heterostructure construction and N doping, as well as the mesoporous hierarchical cubic structure providing stable gas diffusion channels and large specific surface area.

SENSORS AND ACTUATORS B-CHEMICAL (2021)

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Review Chemistry, Physical

Insights into g-C3N4 as a chemi-resistive gas sensor for VOCs and humidity - a review of the state of the art and recent advancements

Parthasarathy Srinivasan et al.

Summary: The article discusses the research progress of graphitic polymeric carbon nitride materials in chemical sensing applications, focusing on their characteristics in humidity and volatile organic compound sensing applications, as well as future development directions and strategies.

JOURNAL OF MATERIALS CHEMISTRY A (2021)

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Article Nanoscience & Nanotechnology

Photodoping-Inspired Room-Temperature Gas Sensing by Anatase TiO2 Quantum Dots

Andris Sutka et al.

Summary: This study demonstrates a gas sensing approach based on photodoping using a thin TiO2 nanoparticle film activated by UV light. The material shows a 1 order of magnitude higher response toward ethanol under UV light compared to no light. This concept enables selective sensor material design.

ACS APPLIED NANO MATERIALS (2021)

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Article Materials Science, Multidisciplinary

Low-operating temperature ammonia sensor based on Cu2O nanoparticles decorated with p-type MoS2 nanosheets

Yanqiao Ding et al.

Summary: A simple and effective modification strategy for gas sensors incorporating Cu2O and MoS2 nanohybrids has been proposed. The sensor shows excellent NH3 sensing performance at low temperatures, with enhanced selectivity and sensing properties attributed to heterojunction formation and increased specific surface area.

JOURNAL OF MATERIALS CHEMISTRY C (2021)

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Article Chemistry, Multidisciplinary

Gas Sensing of NiO-SCCNT Core-Shell Heterostructures: Optimization by Radial Modulation of the Hole-Accumulation Layer

Muhammad Hamid Raza et al.

ADVANCED FUNCTIONAL MATERIALS (2020)

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Article Chemistry, Physical

Size-tunable ferromagnetic ZnFe2O4 nanoparticles and their ethanol detection capabilities

M. Nemufulwi et al.

APPLIED SURFACE SCIENCE (2020)

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Article Nanoscience & Nanotechnology

Pentagram-Shaped Ag@Pt Core-Shell Nanostructures as High-Performance Catalysts for Formaldehyde Detection

Dongsheng Xu et al.

ACS APPLIED MATERIALS & INTERFACES (2020)

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Article Nanoscience & Nanotechnology

Vacancy-Assisted Selective Detection of Low-ppb Formaldehyde in Two-Dimensional Layered SnS2

Kenjiro Hayashi et al.

ACS APPLIED MATERIALS & INTERFACES (2020)

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Article Engineering, Environmental

A spendable gas sensor with higher sensitivity and lowest detection limit towards H2S: Porous α-Fe2O3 hierarchical tubule derived from poplar branch

Yang Teng et al.

CHEMICAL ENGINEERING JOURNAL (2020)

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Article Engineering, Environmental

Flexible, superhydrophobic, and electrically conductive polymer nanofiber composite for multifunctional sensing applications

Jiefeng Gao et al.

CHEMICAL ENGINEERING JOURNAL (2020)

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Article Chemistry, Physical

Synthesis of orthogonally assembled 3D cross-stacked metal oxide semiconducting nanowires

Yuan Ren et al.

NATURE MATERIALS (2020)

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Article Physics, Multidisciplinary

A first-principle investigation of NO2 adsorption behavior on Co, Rh, and Ir-embedded graphitic carbon nitride: Looking for highly sensitive gas sensor

Hadi Basharnavaz et al.

PHYSICS LETTERS A (2020)

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Article Chemistry, Analytical

W18O49/Ti3C2Tx Mxene nanocomposites for highly sensitive acetone gas sensor with low detection limit

Shibin Sun et al.

SENSORS AND ACTUATORS B-CHEMICAL (2020)

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Article Chemistry, Analytical

Square disks-based crossed architectures of SnO2 for ethanol gas sensing applications-An experimental and theoretical investigation

Ahmad Umar et al.

SENSORS AND ACTUATORS B-CHEMICAL (2020)

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Article Chemistry, Analytical

A transparent ZnO nanowire MEMS gas sensor prepared by an ITO micro heater

Ting-Jen Hsueh et al.

SENSORS AND ACTUATORS B-CHEMICAL (2020)

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Article Chemistry, Analytical

Flexible, 3D SnS2/Reduced graphene oxide heterostructured NO2 sensor

Jin Wu et al.

SENSORS AND ACTUATORS B-CHEMICAL (2020)

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Article Chemistry, Analytical

Facile synthesis of α-Fe2O3/ZnO core-shell nanowires for enhanced H2S sensing

Jia-He Yang et al.

SENSORS AND ACTUATORS B-CHEMICAL (2020)

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Ultra-Low-Power Smart Electronic Nose System Based on Three-Dimensional Tin Oxide Nanotube Arrays

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Metallic Ti3C2TX MXene Gas Sensors with Ultrahigh Signal-to-Noise Ratio

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NH3 gas sensing performance of ternary TiO2/SnO2/WO3 hybrid nanostructures prepared by ultrasonic-assisted sol-gel method

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Ce doped NiO nanoparticles as selective NO2 gas sensor

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Low Power Operation of Temperature-Modulated Metal Oxide Semiconductor Gas Sensors

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Enhancement of sensor response of as fabricated SWCNT sensor with gold decorated nanoparticles

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Enhanced room-temperature NH3 gas sensing by 2D SnS2 with sulfur vacancies synthesized by chemical exfoliation

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SENSORS AND ACTUATORS B-CHEMICAL (2018)

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Rapid sensitive sensing platform based on yolk-shell hybrid hollow sphere for detection of ethanol

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SENSORS AND ACTUATORS B-CHEMICAL (2018)

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On the high response towards TEA of gas sensors based on Ag-loaded 3D porous ZnO microspheres

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SENSORS AND ACTUATORS B-CHEMICAL (2018)

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Heterostructure of CuO microspheres modified with CuFe2O4 nanoparticles for highly sensitive H2S gas sensor

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Low concentration acetone gas sensing properties of 3 wt% Pd-doped SmCoxFe1-xO3 nanocrystalline powders under UV light illumination

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A highly sensitive and moisture-resistant gas sensor for diabetes diagnosis with Pt@In2O3 nanowires and a molecular sieve for protection

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NPG ASIA MATERIALS (2018)

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APTES-functionalized thin-walled porous WO3 nanotubes for highly selective sensing of NO2 in a polluted environment

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JOURNAL OF MATERIALS CHEMISTRY A (2018)

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Cubic mesoporous Pd-WO3 loaded graphitic carbon nitride (g-CN) nanohybrids: highly sensitive and temperature dependent VOC sensors

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JOURNAL OF MATERIALS CHEMISTRY A (2018)

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Facile lotus-leaf-templated synthesis and enhanced xylene gas sensing properties of Ag-LaFeO3 nanoparticles

Mingpeng Chen et al.

JOURNAL OF MATERIALS CHEMISTRY C (2018)

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Ultrasensitive flexible self-powered ammonia sensor based on triboelectric nanogenerator at room temperature

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NANO ENERGY (2018)

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Self-powered room temperature NO2 detection driven by triboelectric nanogenerator under UV illumination

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NANO ENERGY (2018)

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Sprayed, Scalable, Wearable, and Portable NO2 Sensor Array Using Fully Flexible AgNPs-All-Carbon Nanostructures

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Highly selective ppb-level H2S sensor based on the walnut-like Bi2MoO6 at low temperature

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Morphology-Controlled Aluminum-Doped Zinc Oxide Nanofibers for Highly Sensitive NO2 Sensors with Full Recovery at Room Temperature

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Robust cobalt perforated with multi-walled carbon nanotubes as an effective sensing material for acetone detection

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NiO/NiCo2O4 Truncated Nanocages with PdO Catalyst Functionalization as Sensing Layers for Acetone Detection

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Self-Template Synthesis of Mesoporous Metal Oxide Spheres with Metal-Mediated Inner Architectures and Superior Sensing Performance

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Self-Powered Vehicle Emission Testing System Based on Coupling of Triboelectric and Chemoresistive Effects

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Specific NH3 Gas Sensor Worked at Room Temperature Based on MWCNTs-OH Network

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Pt Nanoparticles Sensitized Ordered Mesoporous WO3 Semiconductor: Gas Sensing Performance and Mechanism Study

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Fabrication and gas sensing properties of Au-loaded SnO2 composite nanoparticles for low concentration hydrogen

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Review Biochemical Research Methods

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Orientation controlled preparation of nanoporous carbon nitride fibers and related composite for gas sensing under ambient conditions

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Highly sensitive and low operating temperature SnO2 gas sensor doped by Cu and Zn two elements

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Novel acetone sensing performance of La1-xSrxCoO3 nanoparticles at room temperature

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Superior, rapid and reversible sensing activity of graphene-SnO hybrid film for low concentration of ammonia at room temperature

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Enhanced ethanol sensing performance for chlorine doped nanocrystalline LaFeO3-δ powders by citric sol-gel method

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Highly sensitive and selective NO2 detection by Pt nanoparticles-decorated single-walled carbon nanotubes and the underlying sensing mechanism

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Highly sensitive formaldehyde gas sensor based on hierarchically porous Ag-loaded ZnO heterojunction nanocomposites

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Thermal stability of WS2 flakes and gas sensing properties of WS2/WO3 composite to H2, NH3 and NO2

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Ionic liquid-assisted synthesis of α-Fe2O3 mesoporous nanorod arrays and their excellent trimethylamine gas-sensing properties for monitoring fish freshness

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Suspended Graphene-Based Gas Sensor with 1-mW Energy Consumption

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MICROMACHINES (2017)

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Near-Room- Temperature Ethanol Detection Using Ag-Loaded Mesoporous Carbon Nitrides

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NiO/NiWO4 Composite Yolk-Shell Spheres with Nanoscale NiO Outer Layer for Ultrasensitive and Selective Detection of Subppm-level p-Xylene

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Hollow ZnSnO3 Cubes with Controllable Shells Enabling Highly Efficient Chemical Sensing Detection of Formaldehyde Vapors

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Layer-by-Layer Self-assembly of Co3O4 Nanorod-Decorated MoS2 Nanosheet-Based Nanocomposite toward High-Performance Ammonia Detection

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In Situ Localized Growth of Ordered Metal Oxide Hollow Sphere Array on Microheater Platform for Sensitive, Ultra-Fast Gas Sensing

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Highly Selective Xylene Sensor Based on NiO/NiMoO4 Nanocomposite Hierarchical Spheres for Indoor Air Monitoring

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ACS APPLIED MATERIALS & INTERFACES (2016)

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Nanowire-Assembled Hierarchical ZnCo2O4 Microstructure Integrated with a Low-Power Microheater for Highly Sensitive Formaldehyde Detection

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Design of Core Shell Heterostructure Nanofibers with Different Work Function and Their Sensing Properties to Trimethylamine

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High Surface Area MoS2/Graphene Hybrid Aerogel for Ultrasensitive NO2 Detection

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Rational Design of Highly Porous SnO2 Nanotubes Functionalized with Biomimetic Nanocatalysts for Direct Observation of Simulated Diabetes

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New Generation Cadmium-Free Quantum Dots for Biophotonics and Nanomedicine

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Nanostructured palladium modified graphitic carbon nitride - High performance room temperature hydrogen sensor

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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2016)

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Heterostructures based on two-dimensional layered materials and their potential applications

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Cubic mesoporous Ag@CN: a high performance humidity sensor

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Optimum shell thickness and underlying sensing mechanism in p-n CuO-ZnO core-shell nanowires

Jae-Hun Kim et al.

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3D microporous Co3O4-carbon hybrids biotemplated from butterfly wings as high performance VOCs gas sensor

Jiujie Zhang et al.

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Co3O4-SWCNT composites for H2S gas sensor application

Soyeon Moon et al.

SENSORS AND ACTUATORS B-CHEMICAL (2016)

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Pt-decorated In2O3 nanoparticles and their ability as a highly sensitive (<10 ppb) acetone sensor for biomedical applications

Mohamed Karmaoui et al.

SENSORS AND ACTUATORS B-CHEMICAL (2016)

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Article Chemistry, Multidisciplinary

A New Strategy for Humidity Independent Oxide Chemiresistors: Dynamic Self-Refreshing of In2O3 Sensing Surface Assisted by Layer-by-Layer Coated CeO2 Nanoclusters

Ji-Wook Yoon et al.

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Article Chemistry, Multidisciplinary

E-Nose Sensing of Low-ppb Formaldehyde in Gas Mixtures at High Relative Humidity for Breath Screening of Lung Cancer?

Andreas T. Guntner et al.

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Article Chemistry, Multidisciplinary

Self-Activated Transparent All-Graphene Gas Sensor with Endurance to Humidity and Mechanical Bending

Yeon Hoo Kim et al.

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Physisorption-Based Charge Transfer in Two-Dimensional SnS2 for Selective and Reversible NO2 Gas Sensing

Jian Zhen Ou et al.

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Role of oxygen functional groups in graphene oxide for reversible room-temperature NO2 sensing

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CARBON (2015)

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Classification of garlic cultivars using an electronic nose

Suchin Trirongjitmoah et al.

COMPUTERS AND ELECTRONICS IN AGRICULTURE (2015)

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Performance of a CVD grown graphene-based planar device for a hydrogen gas sensor

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Stabilizing MoS2 Nanosheets through SnO2 Nanocrystal Decoration for High-Performance Gas Sensing in Air

Shumao Cui et al.

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Review Chemistry, Multidisciplinary

Sensors for Breath Testing: From Nanomaterials to Comprehensive Disease Detection

Gady Konvalina et al.

ACCOUNTS OF CHEMICAL RESEARCH (2014)

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Dual Functional Sensing Mechanism in SnO2-ZnO Core-Shell Nanowires

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Review Chemistry, Analytical

Highly sensitive and selective gas sensors using p-type oxide semiconductors: Overview

Hyo-Joong Kim et al.

SENSORS AND ACTUATORS B-CHEMICAL (2014)

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Article Chemistry, Analytical

Highly sensitive carbon nanotubes-SnO2 nanocomposite sensor for acetone detection in diabetes mellitus breath

Sara Salehi et al.

SENSORS AND ACTUATORS B-CHEMICAL (2014)

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Article Chemistry, Analytical

Ultraselective and ultrasensitive detection of H2S in highly humid atmosphere using CuO-loaded SnO2 hollow spheres for real-time diagnosis of halitosis

Kwon-Il Choi et al.

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Sensory Arrays of Covalently Functionalized Single-Walled Carbon Nanotubes for Explosive Detection

Jan M. Schnorr et al.

ADVANCED FUNCTIONAL MATERIALS (2013)

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Article Chemistry, Physical

An approach to detecting a reducing gas by radial modulation of electron-depleted shells in core-shell nanofibers

Akash Katoch et al.

JOURNAL OF MATERIALS CHEMISTRY A (2013)

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Article Nanoscience & Nanotechnology

Highly Enhanced Acetone Sensing Performances of Porous and Single Crystalline ZnO Nanosheets: High Percentage of Exposed (100) Facets Working Together with Surface Modification with Pd Nanoparticles

Yuanhua Xiao et al.

ACS APPLIED MATERIALS & INTERFACES (2012)

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Article Physics, Applied

High sensitivity detection of NO2 and NH3 in air using chemical vapor deposition grown graphene

Fazel Yavari et al.

APPLIED PHYSICS LETTERS (2012)

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Article Chemistry, Multidisciplinary

Reduced Graphene Oxide Conjugated Cu2O Nanowire Mesocrystals for High-Performance NO2 Gas Sensor

Suzi Deng et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2012)

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Review Nanoscience & Nanotechnology

Electronics and optoelectronics of two-dimensional transition metal dichalcogenides

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NATURE NANOTECHNOLOGY (2012)

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Meat and Fish Freshness Inspection System Based on Odor Sensing

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SENSORS (2012)

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Article Chemistry, Analytical

Formaldehyde gas sensor based on SnO2/In2O3 hetero-nanofibers by a modified double jets electrospinning process

Haiying Du et al.

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Article Chemistry, Multidisciplinary

Two-Dimensional Nanocrystals Produced by Exfoliation of Ti3AlC2

Michael Naguib et al.

ADVANCED MATERIALS (2011)

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Article Food Science & Technology

Rapid identification of pork for halal authentication using the electronic nose and gas chromatography mass spectrometer with headspace analyzer

M. Nurjuliana et al.

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Article Chemistry, Analytical

Improving the ethanol sensing of ZnO nano-particle thin films-The correlation between the grain size and the sensing mechanism

Thanh Thuy Trinh et al.

SENSORS AND ACTUATORS B-CHEMICAL (2011)

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Article Chemistry, Analytical

Carbon dioxide gas sensor using a graphene sheet

Hyeun Joong Yoon et al.

SENSORS AND ACTUATORS B-CHEMICAL (2011)

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Fast, Sensitive Hydrogen Gas Detection Using Single Palladium Nanowires That Resist Fracture

Fan Yang et al.

NANO LETTERS (2009)

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Review Physics, Multidisciplinary

Transport properties of carbon nanotubes

A. V. Eletskii

PHYSICS-USPEKHI (2009)

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Review Chemistry, Analytical

Work function changes in gas sensitive materials: Fundamentals and applications

Alexandru Oprea et al.

SENSORS AND ACTUATORS B-CHEMICAL (2009)

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Article Chemistry, Physical

Detection of individual gas molecules adsorbed on graphene

F. Schedin et al.

NATURE MATERIALS (2007)

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Review Materials Science, Multidisciplinary

Metal oxides for solid-state gas sensors: What determines our choice?

G. Korotcenkov

MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY (2007)

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Article Chemistry, Multidisciplinary

Graphene sensor achieves ultimate sensitivity

Simon Hadlington

CHEMISTRY WORLD (2007)

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Article Materials Science, Multidisciplinary

Electronic transport in carbon nanotubes:: From individual nanotubes to thin and thick networks

V. Skakalova et al.

PHYSICAL REVIEW B (2006)

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Article Chemistry, Multidisciplinary

Thermal conductance of an individual single-wall carbon nanotube above room temperature

E Pop et al.

NANO LETTERS (2006)

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Article Chemistry, Physical

Extracting independently the work function and field enhancement factor from thermal-field emission of multi-walled carbon nanotube tips

SC Lim et al.

CARBON (2005)

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Article Multidisciplinary Sciences

Water-Assisted Highly Efficient Synthesis of Impurity-Free Single-Walled Carbon Nanotubes

K Hata et al.

SCIENCE (2004)

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Article Chemistry, Multidisciplinary

A solution-phase, precursor route to polycrystalline SnO2 nanowires that can be used for gas sensing under ambient conditions

YL Wang et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2003)

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Conduction model of metal oxide gas sensors

N Barsan et al.

JOURNAL OF ELECTROCERAMICS (2001)

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Article Physics, Multidisciplinary

Thermal transport measurements of individual multiwalled nanotubes

P Kim et al.

PHYSICAL REVIEW LETTERS (2001)

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Article Chemistry, Physical

Work function of carbon nanotubes

M Shiraishi et al.

CARBON (2001)

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Article Multidisciplinary Sciences

Extreme oxygen sensitivity of electronic properties of carbon nanotubes

PG Collins et al.

SCIENCE (2000)

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Article Multidisciplinary Sciences

Nanotube molecular wires as chemical sensors

J Kong et al.

SCIENCE (2000)

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