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Sensing mechanism of Ag/α-MoO_(3) nanobelts for H_(2)S gas sensor 被引量:4
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作者 Shi-Kai Shen xin-lei cui +5 位作者 Chuan-Yu Guo Xin Dong Xian-Fa Zhang Xiao-Li Cheng Li-Hua Huo Ying-Ming Xu 《Rare Metals》 SCIE EI CAS CSCD 2021年第6期1545-1553,共9页
Sensing mechanism is still a big problem in the field of gas sensor.In-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... Sensing mechanism is still a big problem in the field of gas sensor.In-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 performance.In this work,Ag/α-MoO_(3) material was obtained by loading Ag in α-MoO_(3) nanobelts prepared by hydrothermal method.The 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). 展开更多
关键词 Ag/α-MoO_(3) NANOBELT Gas sensor Hydrogen sulfide Sensing mechanism
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