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Article
Chemistry, Physical
Gaojie Li et al.
Summary: The morphology and size effect of Pd nanocrystals on the gas sensing performance of SnO2 were investigated. The Pd-SnO2 composites with different sizes and morphologies showed selectivity to H-2 and HCHO. The size effect was found to be more significant than the morphology effect, and the 2%PdNP-SnO2 composite exhibited the best sensing performance among all the composites with different sizes. The Pd-NC1-SnO2 and Pd-OC-SnO2 composites showed better sensing performance to HCHO and H-2, respectively, among the composites with similar sizes but different shapes.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Fangfang Zhang et al.
Summary: This study successfully prepared NiS-Gr-CC heterostructure electrocatalyst, which showed good catalytic activity in acidic and alkaline electrolytes, demonstrating potential applications for hydrogen evolution reaction.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(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
Chemistry, Physical
Wei Liu et al.
Summary: Ni doping is an effective method for changing the electronic structure of Mo2C and enhancing its HER performance. By adjusting the Ni dopant concentration, the HER activity of Mo2C electrodes can be controlled. This work provides valuable insights for the design of Ni-doped Mo2C electrodes for water splitting.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Physical
Moonjeong Jang et al.
Summary: Sensors based on multifunctional n-type metal oxide semiconductors, such as ZnO, are gaining attention in environmental monitoring due to their low cost, high detection response, non-toxic nature, and acceptable biocompatibility. In this study, ZnO sensors were functionalized with PVDF-HFP to achieve highly sensitive and water-stable liquid-phase sensors. The PVDF-HFP coated sensors showed exceptional stability and sensitivity, with hydrazine detection limits approaching 0.01 nM.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Guozheng Zhang et al.
Summary: In this paper, a simple method for the preparation of perovskite-type oxides was reported, achieving controllable morphologies and obtaining materials with oxygen-vacancy rich structures. The LaFeO3-based sensor showed outstanding gas sensing performance at a relatively low temperature.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Li Lv et al.
Summary: In this study, spinel MFe2O4 oxide materials were synthesized using a one-step CVD method with NaCl and dextrin as the porogen and structural support. ZnFe2O4 and NiFe2O4 demonstrated excellent gas sensitivity and selectivity, making them promising sensing materials for gas sensors.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Yichu Zhang et al.
Summary: The effects of Co2+ doping on the characteristic adsorption species and optoelectronic properties of the ZnO crystal plane were simulated using Density Functional Theory (DFT). The simulation results showed changes in the characteristic adsorption species and a decrease in conductivity after Co2+ doping on different crystal planes. The presence of CCS O-2 molecules had a significant effect on conductivity, while CCS H2O molecules had no obvious effect. The conductivity was positively correlated with the coverage rate of CCS O-2 molecules before Co2+ doping and inversely correlated after Co2+ doping. The study demonstrated the possibility of regulating the chemical adsorption and conductivity of ZnO materials through Co2+ doping, providing guidance for utilizing the characteristic O-2 absorption properties of the material plane.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Yuanbo Song et al.
Summary: A new method was developed to fabricate highly dispersed dual Au-Pt alloy on TiO2, showing excellent catalytic oxidation performance for HCHO. The alloyed Au-Pt facilitates oxygen adsorption and dissociation, promoting rapid oxidation of formaldehyde with reduced reaction barrier.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Kewei Liu et al.
Summary: In this study, microstructured ZnSnO3 material with special features was successfully synthesized using a one-step hydrothermal method, and visible light was used to enhance its sensing properties for CO2 gas. The results showed that ZnSnO3 exhibited high gas response, repeatability, and long-term stability towards 400 ppm CO2 at room temperature, with a higher response under purple light excitation. Additionally, ZnSnO3 showed excellent selectivity for 50 ppm CO2, making it a promising material for devices used in medical respiratory detection, agricultural crop growth detection, and other fields.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Chunxu Yang et al.
Summary: Density functional theory was used to simulate the hydroxylation and molecular adsorption mechanism of H2O molecules on the SnO2 (110) crystal plane. The results showed that the crystal plane captured and underwent hydroxylation of H2O molecules, and the hydroxylated crystal plane further chemically adsorbed the H2O molecules. This was confirmed by Fourier transform infrared spectroscopy. The hydroxylation promoted the adsorption of O-2 molecules on the crystal plane by van der Waals forces. The adsorption of O-2 molecules had an impact on the crystal plane conductivity.
MATERIALS RESEARCH BULLETIN
(2022)
Article
Chemistry, Analytical
Mohammad Jamir Ahemad et al.
Summary: In this study, AgAu alloy@ZnO core-shell nanoparticles were synthesized to enhance the detection/sensing properties of chemiresistive gas sensors. The unique core-shell structure and improved electronic and catalytic properties of the AgAu alloy core contribute to the outstanding gas sensing performance of these nanoparticles.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Analytical
Xiaowei Ren et al.
Summary: In this study, an ultrahigh sensitive and selective NO2 gas sensor based on porous ZnO nanocubes derived from metal organic frameworks (MOFs) was reported. The fabricated gas sensor demonstrated excellent selectivity to NO2 over other gases, attributed to the unique structure after pyrolysis which provides more exposed active sites and connected pore channels.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Analytical
Lei Zhu et al.
Summary: The current gas sensors suffer from insufficient sensitivity and selectivity, limiting their application in real-time monitoring of low concentration gas. This study proposes a versatile in situ enrichment amplification strategy that effectively enhances the detection sensitivity and selectivity of gas sensors for hazardous trace gases.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Analytical
Zhe Dong et al.
Summary: In this study, Ni doped CeO2 based MEMS gas sensors were developed for the real time detection of H2S. The sensors exhibit high sensitivity, selectivity, stability, and reliable fabrication potency, and can quantitatively detect H2S at ppb level.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Analytical
Sungjin Kim et al.
Summary: In this study, a controlled porous structure for photoactive gas sensors was fabricated using gas-flow thermal evaporation and atomic layer deposition method. By adjusting the pressure during thermal evaporation and depositing TiO2 layers on the surface of SnO2, selective response to specific gases was achieved. The experimental results showed that the nanoporous SnO2 exhibited high response rate and low detection limit, and the addition of TiO2 layer significantly improved the selective response to HCHO.
SENSORS AND ACTUATORS B-CHEMICAL
(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
Shuang Li et al.
Summary: Heterojunction formation between CeO2 and ZnO led to a tenfold increase in selective TEA gas response compared to pure ZnO, with excellent sensitivity, fast response/recovery times, and stable repeatability for at least 60 days. The unique hierarchical radial morphology of CeO2/ZnO n-n heterojunction provided abundant accessible active sites, facilitating surface reactions and diffusion of target gas molecules, resulting in enhanced TEA sensing performance.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Analytical
Jincheng Fan et al.
Summary: In this study, a room temperature formaldehyde sensor was developed using ZnO nanoparticles and graphene material, capable of detecting as low as 5 ppm of HCHO. The excellent gas sensing performances, including high selectivity and reversibility, were attributed to the synergistic effects of 5-aminonaphthalene-1-sulfonic acid (ANS) and ZnO nanoparticles, with ANS facilitating charge transfer for lower energy barrier detection.
MICROCHEMICAL JOURNAL
(2021)
Article
Chemistry, Analytical
Jinyu Huang et al.
Summary: This study synthesized CuPc-loaded ZnO nanorods using a one-step microwave-assisted hydrothermal approach and characterized the products using various techniques. The CuPc/ZnO sensor showed excellent sensitivity and selectivity towards ammonia under light illumination, with a low detection limit of 0.8 ppm under red light.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Analytical
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)
Article
Chemistry, Physical
Yong-Hui Zhang et al.
Summary: The paper discusses the successful synthesis of Ce-doped ZnO porous nanosheets and their sensing properties towards aniline at room temperature. The Ce-doped ZnO sensor exhibited high response and excellent selectivity due to the abundant oxygen vacancies, high specific surface area, and interface interaction between CeO2 and ZnO. The DFT study results indicated enhanced interaction between ZnO and aniline by introducing oxygen vacancies and Ce doping, suggesting that CZO composites could be a potential candidate for aniline detection at room temperature.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Sikai Zhao et al.
Summary: In this study, NiO/ZnO heterostructured nanowires were synthesized using a two-step liquid phase route, and their gas sensing characteristics were investigated. The sensors showed high sensitivity and stability at the optimum operating temperature of 300 degrees C.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Ashkan Vakilipour Takaloo et al.
Summary: The study demonstrates the incorporation of ZnO/Ag/ZnO nanomesh electrodes into non-fullerene organic photovoltaics, which significantly enhances efficiency under indoor and outdoor lighting conditions, providing higher conversion rates and mechanical flexibility.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Physical
Y. Liu et al.
Summary: The catalytic and sensing performance of ZnO/Ag nanocomposites is greatly influenced by the synthesis method used. A comparative study was conducted to investigate the differences between one-step and two-step polymer network gel synthesis techniques. The results showed that ZnO/Ag nanocomposites synthesized by the two-step method exhibit enhanced photocatalytic efficiency, gas sensing sensitivity, stability, and selectivity, with specific microstructures and optical characteristics as revealed by various analytical methods.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Thalita S. Galhardo et al.
Summary: Control of the selectivity of CO2 hydrogenation catalysts is a fundamental challenge. In this study, it was found that changing the surface of a common Ni catalyst can lead to high selectivity toward CO formation in CO2 hydrogenation processes, representing an important step towards high-added-value products.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Analytical
Jinyu Huang et al.
Summary: Au-loaded ZnO sensors were successfully prepared via seed-assisted solvothermal methods, showing excellent performance in detecting HCHO with significantly improved detection limit and response to HCHO.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Analytical
Li Wang et al.
Summary: This work presents a method for synthesizing Mo-doped SnO2 nanotubes with uniform morphology, which enhances gas adsorption by creating new lattice defects. The optimal doping concentration of transition metal elements is essential for achieving the best sensing response in metal-oxide NTs gas sensors.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Analytical
Sonalika Agarwal et al.
Summary: The design of hierarchical zinc oxide (ZnO) microstructures modified with silver (Ag) nanoparticles has been proven effective in enhancing hydrogen gas sensing performance. The Ag/ZnO hollow microstructures showed superior sensitivity, fast response and recovery time, as well as good stability, even at low hydrogen gas concentrations. This enhancement in sensing performance is attributed to the chemical and electronic sensitization effect of Ag nanoparticles, leading to a more sensitive sensor with improved selectivity.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Analytical
Jingjing Liu et al.
Summary: Unique nanosized-Pt-decorated hierarchical ZnO microspheres were prepared, showing excellent TEA gas sensing performance with a response value of 242, a working temperature as low as 200 degrees Celsius, and good selectivity and long-term stability. The synergistic effect between Pt and ZnO, as well as the electron-sinker effect of Pt, are the reasons for its superior performance.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Multidisciplinary Sciences
Purui Zheng et al.
Summary: The authors reported a mild Ni/photoredox-catalyzed reductive cross-coupling of aryl iodides and alpha -chloroboranes, enriching the metallaphotoredox chemistry. This method enables the access to versatile benzylic boronic esters with good functional group tolerance and excellent enantioselectivities under mild conditions.
NATURE COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Jaewoo Park et al.
Summary: A sensing platform based on graphene field-effect transistor (GFET) devices combined with optical illumination was reported for detecting volatile compounds. UV illumination was found to enhance the device's response to ethanol, water, and DMMP, enabling ppb-level detection of DMMP without chemical functionalization of the graphene layer.
Article
Chemistry, Physical
Ahmet Emre Kasapoglu et al.
Summary: This study successfully grew Sb-doped ZnO nanorods using a simple spray pyrolysis method, with XRD measurements indicating preferential c-axis (002) plane for all films, and no lattice distortion from Sb doping. Raman measurements showed Sb doping related modes, especially defect related, in ZnO nanorods, with excellent hydrogen gas sensor performance demonstrated by a 5.0 wt% Sb-doped ZnO nanorod sample.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Yongjian Zeng et al.
Summary: In this study, Mn-Co mixed oxides supported on carbon nanotubes were prepared to enhance low-temperature catalytic activity for formaldehyde removal. The optimal composition of 3Mn-1Co showed the highest content of Co3+, Mn3+, and active lattice oxygen, resulting in the best catalytic performance for formaldehyde oxidation.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Analytical
Tarcisio M. Perfecto et al.
Summary: A new method was developed for modifying zinc oxide hollow spheres with nickel sulfide nanosheets to increase the selectivity for butanone and reduce the negative impact of humidity on the sensor. The modified sensors showed improved response and selectivity compared to pure zinc oxide under both dry and humid conditions.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Analytical
Sikai Zhao et al.
Summary: ZnO-SnO2 hetero-structured nanowires were fabricated by growing SnO2 nanoparticles on ZnO nanowires, showing improved NO2 sensing properties with the highest response at a Sn/Zn atomic ratio of 5% and operating temperature of 150 degrees C. These hetero-structured nanowires also exhibited faster response/recovery rate and better NO2 selectivity compared to pristine ZnO nanowires, with the performance difference explained by surface depletion and potential barrier control models.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Physical
Yanhui Sun et al.
Summary: The addition of zeolite on the surface of metal oxides enhances the selectivity of gas sensors, and the synthesis of SnO2/ZSM-5 composite nanofibers can improve sensor sensitivity and selectivity to formaldehyde. The interface between the two materials plays a significant role in enhancing sensor properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Acoustics
Daniela Meroni et al.
Summary: This study demonstrated the first realization of diclofenac degradation using a piezo-enhanced sonophotocatalytic approach based on ZnO, showing strong synergistic effects in mineralization process with suitable ZnO morphologies. Experimental results in a complex water matrix indicated that this method could be a promising alternative to traditional degradation approaches for the remediation of real water matrices.
ULTRASONICS SONOCHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Yi Xia et al.
Summary: This study presents a room-temperature visible-light-activated optoelectronic NO2 sensor based on 2D/2D T3C2Tx/WS2 nanocomposites, which exhibited excellent performance and provides a promising method for fabricating high-performance gas sensors at room temperature based on 2D nanomaterials.
CHEMICAL COMMUNICATIONS
(2021)
Article
Nanoscience & Nanotechnology
Dongzhi Zhang et al.
ACS APPLIED MATERIALS & INTERFACES
(2020)
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Nanoscience & Nanotechnology
Kyoungjin Hwang et al.
ACS APPLIED MATERIALS & INTERFACES
(2020)
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Maddaka Reddeppa et al.
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(2020)
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Xin-Yu Huang et al.
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(2020)
Article
Chemistry, Analytical
Feifei Yin et al.
SENSORS AND ACTUATORS B-CHEMICAL
(2020)
Article
Engineering, Environmental
PeiJiang Cao et al.
CHEMICAL ENGINEERING JOURNAL
(2020)
Article
Engineering, Environmental
Yong-Hui Zhang et al.
JOURNAL OF HAZARDOUS MATERIALS
(2020)
Article
Chemistry, Analytical
Li Jiang et al.
SENSORS AND ACTUATORS B-CHEMICAL
(2020)
Article
Chemistry, Physical
P. J. Cao et al.
APPLIED SURFACE SCIENCE
(2020)
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Onur Alev et al.
JOURNAL OF ALLOYS AND COMPOUNDS
(2020)
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Wuyuan Tan et al.
ACS APPLIED ENERGY MATERIALS
(2020)
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Yan Chen et al.
APPLIED SURFACE SCIENCE
(2020)
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Nanoscience & Nanotechnology
Yanwei Li et al.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2019)
Article
Chemistry, Analytical
Jingjing Jiang et al.
SENSORS AND ACTUATORS B-CHEMICAL
(2018)
Article
Chemistry, Inorganic & Nuclear
Md. R. Shakil et al.
INORGANIC CHEMISTRY
(2018)
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Nanoscience & Nanotechnology
Nguyen Minh Triet et al.
ACS APPLIED MATERIALS & INTERFACES
(2017)
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Nanoscience & Nanotechnology
Jing Wang et al.
ACS APPLIED MATERIALS & INTERFACES
(2016)
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Materials Science, Multidisciplinary
K. Karthika et al.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2015)
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Chemistry, Physical
Linqi Shi et al.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2015)
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Chemistry, Analytical
Xian Li et al.
SENSORS AND ACTUATORS B-CHEMICAL
(2015)
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Xiuwen Wang et al.
JOURNAL OF MATERIALS CHEMISTRY A
(2015)
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Chemistry, Multidisciplinary
Shuo Li et al.
CHEMISTRY-A EUROPEAN JOURNAL
(2014)
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Materials Science, Multidisciplinary
A. Bouaoud et al.
MATERIALS CHEMISTRY AND PHYSICS
(2013)
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Chemistry, Analytical
Lina Han et al.
SENSORS AND ACTUATORS B-CHEMICAL
(2013)
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Chemistry, Analytical
Jiabao Cui et al.
SENSORS AND ACTUATORS B-CHEMICAL
(2013)
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Yongchun Lu et al.
