Sensing mechanism of Ag/α-MoO_(3) nanobelts for H_(2)S gas sensor

作     者：Shi-Kai Shen Xin-Lei Cui Chuan-Yu Guo Xin Dong Xian-Fa Zhang Xiao-Li Cheng Li-Hua Huo Ying-Ming Xu Shi-Kai Shen;Xin-Lei Cui;Chuan-Yu Guo;Xin Dong;Xian-Fa Zhang;Xiao-Li Cheng;Li-Hua Huo;Ying-Ming Xu

作者机构：School of Electrical EngineeringSuihua UniversitySuihua 152000China Key Laboratory of Functional Inorganic Material ChemistryMinistry of Education of the People’s Republic of ChinaHeilongjiang UniversityHarbin 150080China Key Laboratory for Polymeric Composite and Functional Materials of Ministry of EducationGuangdong Engineering Technology Research Center for High-Performance Organic and Polymer Photoelectric Functional FilmsSchool of ChemistrySun Yat-Sen UniversityGuangzhou 510275China 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2021年第40卷第6期

页      面：1545-1553页

核心收录：

学科分类：07[理学] 080202[工学-机械电子工程] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 0702[理学-物理学] 

基　　金：financially supported by the National Natural Science Foundation of China (Nos.21771060 and 61271126) the International Science and Technology Cooperation Program of China (No.2016YFE0115100) Heilongjiang Educational Department (No.RCYJTD201903) Heilongjiang Touyan Innovation Team Program 

主　　题：Ag/α-MoO_(3) Nanobelt Gas sensor Hydrogen sulfide Sensing mechanism 

摘      要：Sensing mechanism is still a big problem in the field of gas ***-depth study of the sensing mechanism can provide better ideas for the design of sensing materials,and it is also more conducive to the improvement in gas-sensing *** this work,Ag/α-MoO_(3) material was obtained by loading Ag in α-MoO_(3) nanobelts prepared by hydrothermal *** material was characterized by field electron scanning electron microscopy(SEM),high-resolution transmission electron microscopy(HRTEM),X-ray diffraction(XRD) and X-ray photoelectron spectroscopy(XPS).Comparing the gas sensing properties of α-MoO_(3) and Ag/α-MoO_(3),it is found that Ag effectively improves the selectivity of the material to H_(2)S at 133℃.The response of the 5 wt% Ag/α-MoO_(3) sensor to 100 × 10-6 hydrogen sulfide(H_(2)S) is 225 and the detection limit is 100 ×10^(-9).The sensing mechanism was verified by gas chromatography and mass spectrometer(GC-MS),XPS and Fourier transform infrared spectroscopy(FTIR).