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Article
Chemistry, Physical
Yihan Yang et al.
Summary: This study synthesized CdS nanorods and CdS nanosheets with exposed {100} and {0 0 1} facets respectively, and demonstrated the different roles of different facets in photocatalytic performance. It was found that pristine CdS nanorods showed higher hydrogen evolution rate than CdS nanosheets. However, when integrated with Pt cocatalyst, the enhancement in hydrogen evolution rate was significantly lower for CdS nanorods compared to CdS nanosheets. The adsorption of protons and interfacial charge migration played important roles in determining the performance of CdS nanorods and nanosheets.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Haineng Bai et al.
Summary: A high-performance and cost-effective NO2 gas sensor operating at room temperature was achieved by depositing Pd nanoparticles and rGO nanosheets onto synthesized SnO2 nanospheres. The sensor exhibited unique porous structure, high selectivity, and fast response, with a theoretical detection limit of 37.8 ppb.
APPLIED SURFACE SCIENCE
(2022)
Article
Materials Science, Ceramics
Yu-Kun Syue et al.
Summary: In this study, zinc oxide (ZnO) nanofibers were prepared using the electrospinning method and combined with La0.8Sr0.2FeO3 (LSFO) perovskite film to create a ZnO/LSFO heterostructure gas sensor. The sensor showed a good sensing response to H2S gas and exhibited gas selectivity.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Jie Hu et al.
Summary: By combining composition engineering with morphology modulation, PdO-Fe2O3 heterojunction architectures with various morphologies were successfully fabricated. The gas sensing devices constructed from these PdO-Fe2O3 composites exhibited excellent selectivity properties and high responses to target gases. The urchin-like PdO-Fe2O3 sensing device produced the largest response of 75 to 50 ppm hydrogen sulfide at a PdO concentration of 4 wt%, which was approximately four times greater than that of a spherical PdO-Fe2O3 sensor. The urchin-like sensor also showed the highest response recovery efficiency, water resistance, and long-term stability.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Se-Hee Shin et al.
Summary: Zinc oxide is widely used in gas sensors and photocatalysts due to its unique band structure and surface properties. In this study, we successfully synthesized organic-additive-free ZnO using hydrothermal synthesis method without surfactants. By controlling the concentrations ratio, we were able to control the morphology of the ZnO. Various characterization techniques were employed to understand the growth mechanism and surface properties of the ZnO. The flower-shaped ZnO material exhibited the best performance as a gas sensor.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Multidisciplinary
Kyu Seung Lee et al.
Summary: This study demonstrates the sensing properties and adsorption mechanism of monolayer graphene and multilayer graphene encapsulated ZnO quantum dots for NO2 gas. The results show that the gas response value and surface potential change of multilayer graphene encapsulated ZnO quantum dots are significantly higher than those of monolayer graphene and ZnO quantum dots. The proposed adsorption mechanism provides insights for improving the detection behavior and enhancing the accuracy of gas sensor analysis.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Chao Fan et al.
Summary: In this work, Ti3C2Tx-ZnO nanosheet hybrids were fabricated and demonstrated to have improved gas-sensing performance. The hybrids exhibited short recovery and response times, high sensitivity, and selectivity. The sensor also showed excellent anti-humidity properties and reproducibility.
Article
Materials Science, Multidisciplinary
X. L. Xu et al.
Summary: The study focuses on optimizing semiconductor performance by proposing a novel MoS2/ZnO semiconductor heterojunction with carefully designed composite structures. The sensor exhibits remarkable response and selectivity to TEA, along with excellent stability and short response/recovery times. The unique nanostructure and n-n heterojunctions contribute to the superior performance of the sensor, confirming its promising prospect in practical applications.
Article
Materials Science, Ceramics
Chao Zhang et al.
Summary: In this study, hollow sphere sensors based on In2O3 were prepared using the soft template method for the detection of low concentrations of volatile organic compounds (VOCs) for early diagnosis of lung cancer. The Ag-In2O3 composite sensors showed the highest response to isopropanol and had a significant improvement compared to pure In2O3 sensors, with shortened response and recovery time.
JOURNAL OF ADVANCED CERAMICS
(2022)
Article
Nanoscience & Nanotechnology
Huiyun Hu et al.
Summary: In this study, a ZnO/ANS-rGO composite was prepared for room-temperature formaldehyde sensing using a biomimetic hierarchical structure and supramolecular assembly. The sensor exhibited high response, good repeatability, and long-term stability, making it a promising material for practical formaldehyde sensing.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Sonalika Agarwal et al.
Summary: PdO/ZnO flower-like nanostructures decorated with PdO nanoparticles were synthesized and studied for hydrogen sensing applications. The sensor showed high sensitivity, rapid response time, and selectivity towards hydrogen gas compared to other target gases.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
T. Bhowmick et al.
Summary: A CuO/ZnO bilayer thin film was developed for sensitive and selective detection of CO2 gas. The adsorption behavior of CO2 on the heterogenous C/Z bilayer thin-film sensor was investigated, and the theoretical analysis of the adsorption model provided insights into the activation energy and heat of adsorption of CO2 gas. The study elucidated the CO2 sensing mechanism based on surface defects for CuO and ZnO.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Analytical
Bin Jiang et al.
Summary: The increasing demand for hazardous gas detections has led to the development of mesoporous materials for gas sensors. This study successfully synthesized mesoporous structures for semiconductor oxides using a universal method. The gas sensing response to ethanol can be regulated by adjusting the morphology and thickness of the mesoporous nanosheets. Furthermore, the method shows excellent repeatability and can be applied to various oxide materials.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Analytical
P. K. Shihabudeen et al.
Summary: We report the improvement of ethanol sensing characteristics of zinc oxide (ZnO) thin films by nitrogen doping. The nitrogen-doped ZnO sensor exhibits lower operating temperature, faster response time, long-term stability, improved resilience against humidity, and selectivity towards ethanol. Density functional theory calculations support the experimental observations by estimating the adsorption energies of ethanol on ZnO and nitrogen-doped ZnO surfaces. The enhanced ethanol sensing of nitrogen-doped ZnO is attributed to the facile adsorption of ethanol molecules on the modified oxide surface.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Physical
Artem S. Mokrushin et al.
Summary: In this study, highly dispersed ZnO powders doped with europium and praseodymium were synthesized using the solvothermal method. The crystal structure, electrical properties, and gas-sensitive properties of the samples were investigated. The results showed that doping with Eu and Pr increased the electron escape capability of the ZnO powders, and the influence of humidity on the detection results could be eliminated by doping with europium and praseodymium.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Yubo Bi et al.
Summary: This study successfully synthesized high-performance triethylamine gas sensors by decorating Ag+ on Fe3+ covered carbonaceous microsphere templates followed by a calcination step. The Ag-functionalized alpha-Fe2O3 nanocomposites with internal cavities exhibited excellent gas sensing properties, and the effect of relative humidity on the sensors was also investigated.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Analytical
Yiqun Zhang et al.
Summary: Recently, researchers have found that self-assembled monolayer functionalized surfaces can enhance the gas-sensing performance of semiconductor oxide-based sensors. In this study, the metal-organic framework material ZIF-8 was used as a sacrificial template to obtain ZnO nanoparticles through high-temperature calcination. The surface of ZnO was then modified with a single layer of 3-aminopropyltriethoxysilane (APTES). Compared to the pure ZnO-based sensor, the sensor based on 0.5 vol% APTES/ZnO exhibited a higher response to 2-butanone. The improved response is mainly attributed to the APTES molecules capturing electrons from the ZnO surface and widening the electron depletion layer. Additionally, the amine (-NH2) group of the APTES monolayer enhanced the specific interaction between the sensing material and 2-butanone, resulting in improved sensor performance. After functionalization with 0.5 vol% APTES, the sensor achieved a lower detection limit of 200 ppb, while the pure ZnO-based sensor had a detection limit of 500 ppb.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Analytical
Lianyun Cheng et al.
Summary: A sensitization strategy was proposed to improve the gas sensing performance of ZnO by constructing ZnS-ZnO n-n heterojunction. The gas sensing tests indicated that after modification with ZnS-ZnO heterojunctions, the gas sensing performances of the ZnO PHS sensor were remarkably improved, especially in terms of response speed, sensitivity, and selectivity.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Physical
Worachote Photaram et al.
Summary: Gas sensing devices are crucial in various applications and there is a pressing need for improved sensing materials and advanced sensor devices. This study combines theoretical and experimental approaches to design and fabricate a hybrid zinc oxide/graphene material for enhanced performance. The research demonstrates that the Zn12O12/graphene nanohybrid shows excellent gas sensing properties, particularly for ethanol gas detection.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Analytical
Xin Liu et al.
Summary: The performance of NO2 gas sensors can be greatly enhanced by introducing Ti3C2Tx sheets, which can reduce the operating temperature and improve gas sensitivity.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Analytical
Yiping Liu et al.
Summary: The development of high-performance H2S sensor is crucial for monitoring H2S in the living environment. The article introduces a sensor based on AuPt@ZnO nanowires, which has high sensitivity, improved selectivity, rapid response-recovery process, and long-term stability. This sensor has great potential for application.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Review
Chemistry, Multidisciplinary
Guanglu Lei et al.
Summary: This article summarizes the synthesis technologies applicable to gas sensors for single atom catalysts (SACs), and discusses the crucial electronic and chemical interactions between SACs and sensing materials. The article highlights the application progress of various SACs in gas sensors and prospects for creating new sensing materials using emerging SACs and versatile supports. Finally, the challenges and prospects of SACs in the future development of sensors are analyzed.
CHEMICAL SOCIETY REVIEWS
(2022)
Article
Chemistry, Physical
Miao Liu et al.
Summary: In this study, a simple hydrothermal approach was used to prepare alpha-Fe2O3/Ti3C2Tx MXene composite material with high specific surface area and abundant functional groups. The composite exhibited excellent sensing performance for various vapors at room temperature, with good linear response, reversibility, and long-term stability.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
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)
Article
Chemistry, Physical
Rishi Ranjan Kumar et al.
Summary: A high-performance room temperature NO2 chemoresistive gas sensor was fabricated using a MoS2/ZnO nanohybrid, exhibiting remarkable responses, low detection limit, and full recovery. The Langmuir adsorption model was utilized to study the adsorption/desorption kinetics in detail.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Analytical
Yue Sun et al.
Summary: A gas sensor based on In2O3 derived from In-MIL-68 shows high sensitivity, selectivity, stability, and moisture resistance for quantitatively detecting TEA gas at ppb level. With a porous lacunaris structure, the sensor exhibits a fast response and recovery time when exposed to TEA gas, making it a promising candidate for TEA detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Review
Chemistry, Physical
Sanjit Manohar Majhi et al.
Summary: This paper presents a discussion on types of gas sensors and energy-saving strategies, focusing on self-heated gas sensors, MEMS-based gas sensors, and room temperature operated flexible/wearable sensors, as well as their applications in environmental monitoring.
Article
Chemistry, Physical
Yan Li et al.
Summary: A hollow porous ZnO@ZnS core-shell structure was successfully synthesized hydrothermally, showing high gas-sensing performance with high selectivity, quick response-recovery, and stability to ethanol. The gas-sensing enhancement can be attributed to the Schottky barrier at the interface and the special hollow porous structure of ZnO@ZnS.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Analytical
Chen Su et al.
Summary: A novel flower-like hierarchical NiO-ZnO heterostructure was synthesized using a one-step hydrothermal method with the assistance of glucose and further calcination treatment. Gas sensors based on this heterojunction showed excellent response and stability for glycol detection at relatively low operating temperature. This work demonstrates a great potential for efficient glycol gas detection by directly synthesizing G-NiO-ZnO heterojunction in a one-step approach.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Materials Science, Multidisciplinary
Yan Zhang et al.
Summary: WO3 nanorods and PtAg-loaded WO3 nanorods were synthesized for CO detection. The modification by PtAg nanoparticles improved the sensing performance of WO3, with enhanced sensitivity and reduced optimal temperature. The combination of experimental and theoretical research provided a feasible strategy for CO gas sensor design.
Article
Chemistry, Physical
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)
Article
Nanoscience & Nanotechnology
Gaojie Li et al.
Summary: Bimetal decoration is an effective strategy to increase the sensitivity of metal oxide semiconductor sensors, and PdPt/α-Fe2O3 shows high catalytic activity towards TEA, demonstrating superior sensing performance.
ACS APPLIED NANO MATERIALS
(2021)
Article
Chemistry, Analytical
Gyuweon Jung et al.
Summary: This study compared the characteristics of gas sensors using different transducers (MOSFET, resistor, and TFT), with results showing that the TFT-type gas sensor performed the best in terms of response, signal to noise ratio, and limit of detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Analytical
Xiaoli Xu et al.
Summary: This study prepared a novel MoS2/ZnO composite sensor with good gas sensing performance and recovery rate through a hydrothermal method. The composite material has strong anti-interference ability and outstanding selectivity, which may be attributed to its unique microstructure.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Analytical
Chengming Lou et al.
Summary: A highly selective and humidity-resistant gas sensor based on SnO2/ZrO2 porous thin films with a three-dimensionally ordered microstructure (3DOM) has been developed, showing decent response to triethylamine (TEA) with ultrafast response and recovery speed. The sensor also exhibits superior selectivity, long-time stability and a low detection limit, making it potentially useful for practical TEA detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Materials Science, Multidisciplinary
Z. P. Tshabalala et al.
Summary: The notable surface area and gas sensing properties of TiO2 nanofibers synthesized using a microwave assisted hydrothermal method were reported. Different crystal phases and surface areas were observed after washing with Hydrochloric acid and distilled water, with higher selectivity and sensitivity towards CH4 gas demonstrated by nanofibers washed with 1.0 M HCl.
Article
Engineering, Electrical & Electronic
Huan Zhang et al.
Summary: CdS nanoparticle decorated ZnO porous nanosheets were successfully synthesized through a wet-chemistry method, exhibiting excellent sensing activity and selectivity towards isopropanol.
IEEE SENSORS JOURNAL
(2021)
Article
Chemistry, Physical
Yaru Fan et al.
Summary: The study successfully synthesized pure ZnO and a series of Co-doped ZnO nanostructures with superior gas-sensing performance, especially toward triethylamine. The Co-doped ZnO sensors exhibited enhanced response, excellent stability, high selectivity, and low detection limit, making them promising sensing materials for practical applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Environmental
Zishuo Li et al.
Summary: This study presents a high-performance gas sensor based on plasma-etched zinc oxide thin films, with a thickness of 20 nm deposited on SiO2 wafers by ALD. The zinc oxide sensor exhibits n-type conductivity and sensitivity to triethylamine, with the sensor response affected by annealing temperature. Ar plasma treatment results in improved sensor performance by generating oxygen vacancies.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Engineering, Environmental
Jingjing Liu et al.
Summary: A high-response formaldehyde gas sensor based on Ag-ZnO/In2O3 nanofibers was successfully fabricated, showing superior sensitivity, selectivity and stability, with an ultra-high response value towards formaldehyde. The low detection limit of the sensor can be mainly attributed to the proper design of multi-level heterojunctions, which significantly enhance the sensing performance.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Analytical
Haineng Bai et al.
Summary: Novel mesoporous heterostructures composed of CdS, PbS, and SnO2 were synthesized via a green and facile treatment, showing enhanced gas-sensing properties for H-2 gas detection. The CdS/PbS/SnO2 sensor exhibited fast response/recovery time, ultralow detection limit, outstanding selectivity, reliable reversibility, and long-term stability, mainly attributed to its large surface-to-volume ratio and numerous heterojunctions for accelerated carrier transfer. This work suggests great potential for ppb-level H-2 gas monitoring in extreme environments.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Multidisciplinary Sciences
G. Greczynski et al.
Summary: Chemical state analysis in X-ray photoelectron spectroscopy (XPS) relies on assigning well-defined binding energy values to core level electrons originating from atoms in particular bonding configurations. Here, direct evidence is presented for the violation of this paradigm, as the C 1s peak due to C-C/C-H bonded atoms from adventitious carbon (AdC) layers splits into two distinctly different contributions. This finding exposes fundamental problems with the reliability of reported XPS data and suggests discontinuing the use of adventitious carbon in XPS.
SCIENTIFIC REPORTS
(2021)
Article
Chemistry, Multidisciplinary
Snehanjan Acharyya et al.
Summary: Semiconducting metal oxide-based gas sensors lack selectivity due to responsiveness to various gases. Gas sensing kinetic analysis was employed to precisely identify volatile organic compounds, with excellent sensor response and high sensitivity observed. The Eley-Rideal model was utilized for theoretical fitting and calculation of characteristic kinetic properties to discriminate among different VOCs.
Article
Telecommunications
Yang Jing et al.
Summary: The Non-Dispersive InfraRed (NDIR) gas sensor is widely used for gas detection, but existing products have issues like large volume, high cost, and lack of integration. This paper presents a novel fully integrated infrared gas sensor structure, optimizing the gas chamber's light structure and flow, and designing a MEMS gas chamber production process. The result is a small volume, high transmissivity gas chamber, essential for producing miniaturized NDIR gas sensors.
DIGITAL COMMUNICATIONS AND NETWORKS
(2021)
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Zhichao Song et al.
CERAMICS INTERNATIONAL
(2020)
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SOLID-STATE ELECTRONICS
(2020)
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Ruosong Chen et al.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2020)
Article
Materials Science, Multidisciplinary
Sri Handani et al.
Review
Chemistry, Inorganic & Nuclear
Dongzhi Zhang et al.
COORDINATION CHEMISTRY REVIEWS
(2020)
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Fubo Gu et al.
Review
Nanoscience & Nanotechnology
Rahul Kumar et al.
NANO-MICRO LETTERS
(2020)
Article
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Xinzhen Wang et al.
ACS APPLIED NANO MATERIALS
(2020)
Article
Chemistry, Multidisciplinary
Yongshan Xu et al.
MATERIALS HORIZONS
(2020)
Article
Chemistry, Analytical
Xiaojing Liu et al.
SENSORS AND ACTUATORS B-CHEMICAL
(2019)
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Yanwei Li et al.
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(2019)
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Menghan Dun et al.
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(2019)
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Tianye Yang et al.
SENSORS AND ACTUATORS B-CHEMICAL
(2019)
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(2019)
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Nan Zhang et al.
INORGANIC CHEMISTRY FRONTIERS
(2019)
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G. Greczynski et al.
APPLIED SURFACE SCIENCE
(2018)
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Chemistry, Analytical
Zheng Shen et al.
SENSORS AND ACTUATORS B-CHEMICAL
(2018)
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Sigang Shi et al.
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Grzegorz Greczynski et al.
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Qinqin Zhao et al.
SENSORS AND ACTUATORS B-CHEMICAL
(2016)
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Bin Liu et al.
SENSORS AND ACTUATORS B-CHEMICAL
(2012)
