Highly Sensitive and Selective H2S Chemical Sensor Based on ZnO Nanomaterial

被引：24
|
作者：
Galstyan, Vardan [1 ]
Poli, Nicola [1 ]
Comini, Elisabetta [1 ]
机构：
[1] Univ Brescia, Dept Informat Engn, Sensor Lab, Via Valotti 9, I-25133 Brescia, Italy
来源：
APPLIED SCIENCES-BASEL | 2019年 / 9卷 / 06期
关键词：
ZnO; nanomaterial; H2S; chemical sensor; gas sensor; REDUCED GRAPHENE OXIDE; GAS SENSOR; SENSING PERFORMANCE; CATALYTIC-ACTIVITY; HYDROGEN-SULFIDE; THIN-FILMS; ONE-STEP; NANOSTRUCTURES; NANOPARTICLES; SNO2;
D O I：
10.3390/app9061167
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
ZnO is worth evaluating for chemical sensing due to its outstanding physical and chemical properties. We report the fabrication and study of the gas sensing properties of ZnO nanomaterial for the detection of hydrogen sulfide (H2S). This prepared material exhibited a 7400 gas sensing response when exposed to 30 ppm of H2S in air. In addition, the structure showed a high selectivity towards H2S against other reducing gases. The high sensing performance of the structure was attributed to its nanoscale size, morphology and the disparity in the sensing mechanism between the H2S and other reducing gases. We suggest that the work reported here including the simplicity of device fabrication is a significant step toward the application of ZnO nanomaterials in chemical gas sensing systems for the real-time detection of H2S.
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页数：10
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