摘要
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).
出处
《Rare Metals》
SCIE
EI
CAS
CSCD
2021年第6期1545-1553,共9页
稀有金属（英文版）
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。
