scholarly journals Tube in tube ZnO/ZnCo2O4 nanostructure synthesized by facile single capillary electrospinning with enhanced ethanol gas-sensing properties

RSC Advances ◽  
2017 ◽  
Vol 7 (19) ◽  
pp. 11428-11438 ◽  
Author(s):  
Khaled Tawfik Alali ◽  
Jingyuan Liu ◽  
Qi Liu ◽  
Rumin Li ◽  
Zhanshuang Li ◽  
...  
Keyword(s):  
Gas Sensing ◽  
Tubular Structure ◽  
Sensing Properties ◽  
Gas Sensing Properties ◽  
Sensing Performance

Tube in tube nanostructure of ZnO/ZnCo2O4 was achieved using electrospinning technology. The complex tubular structure and n–p heterojunction are potential reasons for the excellent gas sensing performance of ZnO/ZnCo2O4 tube in tube nanostructure.

Gas sensing properties of Cu2O and its particle size and morphology-dependent gas-detection sensitivity

2014 ◽  
Vol 2 (33) ◽  
pp. 13641-13647 ◽  
Author(s):  
Xuejuan Wan ◽  
Jilei Wang ◽  
Lianfeng Zhu ◽  
Jiaoning Tang
Keyword(s):  
Particle Size ◽  
Gas Sensing ◽  
Detection Sensitivity ◽  
Gas Detection ◽  
Sensing Properties ◽  
Gas Sensing Properties ◽  
Key Factor ◽  
Particle Size And Morphology ◽  
Size And Morphology ◽  
Sensing Performance

Particle size and morphology-dependent gas-detection sensitivity were studied, and the results indicated that the particle stacking mode is a key factor influencing gas sensing performance.

Flower-like In2O3 hierarchical nanostructures: synthesis, characterization, and gas sensing properties

RSC Advances ◽  
2014 ◽  
Vol 4 (91) ◽  
pp. 50241-50248 ◽  
Author(s):  
Dan Han ◽  
Peng Song ◽  
Huihui Zhang ◽  
Huihui Yan ◽  
Qi Xu ◽  
...  
Keyword(s):  
Hydrothermal Method ◽  
Gas Sensing ◽  
Hierarchical Nanostructures ◽  
Sensing Properties ◽  
Gas Sensing Properties ◽  
One Step ◽  
Ethanol Sensing ◽  
Sensing Performance

Flower-like In2O3 nanostructures with superior ethanol sensing performance were synthesized by annealing In(OH)3 precursor prepared via a one-step hydrothermal method.

Y-doped In2O3 hollow nanocubes for improved triethylamine-sensing performance

2021 ◽  
Vol 45 (15) ◽  
pp. 6773-6779
Author(s):  
Qi Zhao ◽  
Guoce Zhuang ◽  
Yongbing Zhao ◽  
Liangliang Yang ◽  
Jinshan Zhao
Keyword(s):  
Gas Sensing ◽  
Fast Response ◽  
High Response ◽  
Sensing Properties ◽  
Response Recovery ◽  
Gas Sensing Properties ◽  
Sensing Performance

Y-In2O3 hollow nanocubes show enhanced triethylamine gas sensing properties, with a high response and an ultra-fast response-recovery speed.

Facile fabrication and enhanced gas sensing properties of hierarchical MoO3 nanostructures

RSC Advances ◽  
2015 ◽  
Vol 5 (89) ◽  
pp. 72728-72735 ◽  
Author(s):  
Huihui Yan ◽  
Peng Song ◽  
Su Zhang ◽  
Zhongxi Yang ◽  
Qi Wang
Keyword(s):  
Gas Sensing ◽  
Sensing Properties ◽  
Gas Sensing Properties ◽  
Facile Fabrication ◽  
Sensing Performance

Hierarchical MoO3 nanostructures, synthesized through oxidization conversion of hydrothermally synthesized MoS2 precursors, show superior gas sensing performance toward ethanol.

scholarly journals Acetone Gas Sensing Properties of a Multiple-Networked Fe2O3-Functionalized CuO Nanorod Sensor

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Sunghoon Park ◽  
Hyejoon Kheel ◽  
Gun-Joo Sun ◽  
Taegyung Ko ◽  
Wan In Lee ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Gas Sensing ◽  
Operating Temperature ◽  
Optimal Operating ◽  
Sensing Properties ◽  
Adsorption Sites ◽  
Gas Sensing Properties ◽  
Response And Recovery ◽  
Cuo Nanorods ◽  
Sensing Performance

Fe2O3-decorated CuO nanorods were prepared by Cu thermal oxidation followed by Fe2O3decoration via a solvothermal route. The acetone gas sensing properties of multiple-networked pristine and Fe2O3-decorated CuO nanorod sensors were examined. The optimal operating temperature of the sensors was found to be 240°C. The pristine and Fe2O3-decorated CuO nanorod sensors showed responses of 586 and 1,090%, respectively, to 1,000 ppm of acetone at 240°C. The Fe2O3-decorated CuO nanorod sensor also showed faster response and recovery than the latter sensor. The acetone gas sensing mechanism of the Fe2O3-decorated CuO nanorod sensor is discussed in detail. The origin of the enhanced sensing performance of the multiple-networked Fe2O3-decorated CuO nanorod sensor to acetone gas was explained by modulation of the potential barrier at the Fe2O3-CuO interface, highly catalytic activity of Fe2O3for acetone oxidation, and the creation of active adsorption sites by Fe2O3nanoparticles.

scholarly journals Study on room temperature gas-sensing performance of CuO film-decorated ordered porous ZnO composite by In 2 O 3 sensitization

2018 ◽  
Vol 5 (2) ◽  
pp. 171788 ◽  
Author(s):  
Tian-tian Li ◽  
Na Bao ◽  
Ai-fang Geng ◽  
Hui Yu ◽  
Ying Yang ◽  
...  
Keyword(s):  
Room Temperature ◽  
Gas Sensing ◽  
Copper Film ◽  
High Sensitivity ◽  
Minimum Concentration ◽  
Temperature Oxidation ◽  
Sensing Properties ◽  
Gas Sensing Properties ◽  
Ordered Porous ◽  
Sensing Performance

For the first time, ordered mesoporous ZnO nanoparticles have been synthesized by a template method. The electroplating after chemical plating method was creatively used to form copper film on the surface of the prepared ZnO, and then a CuO film-decorated ordered porous ZnO composite (CuO/ZnO) was obtained by a high-temperature oxidation method. In 2 O 3 was loaded into the prepared CuO film–ZnO by an ultrasonic-assisted method to sensitize the room temperature gas-sensing performance of the prepared CuO/ZnO materials. The doped In 2 O 3 could effectively improve the gas-sensing properties of the prepared materials to nitrogen oxides (NO x ) at room temperature. The 1% In 2 O 3 doped CuO/ZnO sample (1 wt% In 2 O 3 –CuO/ZnO) showed the best gas-sensing properties whose response to 100 ppm NO x reached 82%, and the detectable minimum concentration reached 1 ppm at room temperature. The prepared materials had a good selectivity, better response, very low detection limit, and high sensitivity to NO x gas at room temperature, which would have a great development space in the gas sensor field and a great research value.

scholarly journals A New Method to Prepare Few-Layers of Nanoclusters Decorated Graphene: Nb2O5/Graphene and Its Gas Sensing Properties

Proceedings ◽  
2018 ◽  
Vol 2 (13) ◽  
pp. 1047 ◽  
Author(s):  
Andrea Gaiardo ◽  
Nadhira Laidani ◽  
Hafeez Ullah ◽  
Giancarlo Pepponi ◽  
Michele Fedrizzi ◽  
...  
Keyword(s):  
Biomedical Applications ◽  
Gas Sensing ◽  
Electrical Power ◽  
Mechanical And Thermal Properties ◽  
Sensing Properties ◽  
Chemically Modified ◽  
Gas Sensing Properties ◽  
Modified Graphene ◽  
Different Gases ◽  
Sensing Performance

During the last decade, due to its excellent electrical, mechanical and thermal properties of chemically modified graphene has been extensively studied for many applications, such as polymer composites, energy-related materials, biomedical applications and sensors. The aim of this work is to evaluate the gas sensing performance of niobium oxide (Nb2O5) nanoclusters deposited onto few-layers graphene powder by magneton sputtering. Two different samples were prepared by changing electrical power of deposition. The materials were deeply morphologically, structurally and chemically characterized. Finally, they were deposited onto alumina substrates and their sensing properties were investigated vs. different gases, showing good sensing performance vs. ppm concentrations of NO2 at room temperature.

Facile fabrication and enhanced gas sensing properties of In2O3 nanoparticles

2014 ◽  
Vol 38 (10) ◽  
pp. 4879-4884 ◽  
Author(s):  
Shuangming Wang ◽  
Pan Wang ◽  
Zhifang Li ◽  
Chuanhai Xiao ◽  
Bingxin Xiao ◽  
...  
Keyword(s):  
Gas Sensing ◽  
Sensing Properties ◽  
Gas Sensing Properties ◽  
Facile Fabrication ◽  
In2o3 Nanoparticles ◽  
Sensing Performance

The sensor based on In2O3 nanoparticles exhibits excellent acetone gas sensing performance.

NH3 Sensing Performance of Pt-Doped WO3·0.33H2O Microshuttles Induced From Scheelite Leaching Solution

2020 ◽  
Author(s):  
Tingting Li ◽  
Pengfei Zhou ◽  
Sikai Zhao ◽  
Cong Han ◽  
Dezhou Wei ◽  
...  
Keyword(s):  
Gas Sensing ◽  
Hexagonal Structure ◽  
Raw Material ◽  
Noble Metal Nanoparticles ◽  
Sensing Properties ◽  
Gas Sensing Properties ◽  
Leaching Solution ◽  
One Step ◽  
Sensing Performance ◽  
Operating Temperature Range

Abstract WO3·0.33H2O microshuttles (WMSs) self-assembled by numerous nanorods along the same direction were prepared based on a cheap tungsten-containing metallurgical raw material by combination processes of NaOH leaching and one-step hydrothermal method. The microstructures and gas sensing properties of various concentrations (0, 0.7, 1.0, and 1.3 mol%) of Pt-doped WMSs were investigated to improve their performance. The microstructural characterizations demonstrated that the WMSs assembled by one-dimensional WO3·0.33H2O nanorods were approximately 0.8−1.9 µm in diameter. Such nanorods exhibited a single hexagonal structure with their diameters ranging from 17 to 62 nm. The gas sensing properties indicated that Pt-doped WMSs showed superior gas sensing performance in terms of the sensor response and NH3 selectivity in the operating temperature range of 25−225 oC as compared with pure one, and simultaneously Pt doping could significantly reduce the detection limit of NH3. Especially, 1.0 mol% Pt-doped WMSs exhibited highest response of 28.2 to 1000 ppm NH3 at 175 oC, which was 4 times higher than pure one at 50 oC. The remarkably enhanced gas sensing performance of Pt-doped WMSs to NH3 could be ascribed to the electronic and chemical sensitization mechanisms of noble metal nanoparticles.

Alkylsilane-functionalized perylenediimide derivatives with differential gas sensing properties

2015 ◽  
Vol 3 (2) ◽  
pp. 466-472 ◽  
Author(s):  
Yongwei Huang ◽  
Weiguang Zhang ◽  
Haiyan Zhai ◽  
Chunli Li
Keyword(s):  
Gas Sensing ◽  
Sensing Properties ◽  
Gas Sensing Properties ◽  
Sensing Performance

It is shown that the sensing performance of perylene sensors can be modulated by alkylsilane chains on the bay regions.

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