Low Concentration CO Gas Sensor Constructed from MoS2 Nanosheets Dispersed SnO2 Nanoparticles at Room Temperature under UV Light
CERAMICS INTERNATIONAL(2023)
摘要
In consideration of the different electron structure-associated physical properties and internal sensing merits of MoS2 and SnO2, this work reports a nanocomposite with unique structure of MoS2 nanosheets dispersed SnO2 nanoparticles. The sensing performance of MoS2/SnO2 sensor toward low concentration CO was investigated at room temperature under the UV light illumination. It was found that MoS2/SnO2 sensor shows improved CO gas response (R ~ 4.97 at 40 ppm CO) compared with pure SnO2 (R ~ 3.27 at 40 ppm CO), which is due to the unique structure and the formation of heterostructure between MoS2 and SnO2. Moreover, the fabricated sensor also exhibits fast response and recovery time (43 s/36 s). The sensor provides a potential platform for monitoring CO gas at room temperature.
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关键词
MoS2/SnO2 composites,CO sensor,Heterostructure,Room temperature,Low concentration
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