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The perovskite CdSnO3 micro-particles modified by multi-walled carbon nanotubes enhance the ethanol gas sensing
1State Key Laboratory of Solidification Processing, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an 710072, China.
Abstract:
Cubic CdSnO3 and it modified by multi-walled carbon nanotubes (CdSnO3/MWCNTs) have been synthesized by following a mild hydrothermal method. CdSnO3/MWCNTs were characterized by using field emission scanning electron microscope (FE-SEM) and X-ray diffractometer (XRD) techniques. The results show that adding MWCNTs in the processing of synthesis had advantage to the growth of the CdSnO3 crystalline. Meanwhile, a comparative study of gas sensing property of CdSnO3 and CdSnO3/MWCNTs to ethanol vapor has been reported. CdSnO3 and CdSnO3/MWCNTs samples were deposited as thick films to act as gas sensors and their comparative response to ethanol vapor was investigated at different temperatures and concentrations. The results reveal that gas response of CdSnO3/MWCNTs is exceptionally higher than that of CdSnO3. The improvement of the gas sensing property of CdSnO3/MWCNTs might due to the bigger surface area and the better crystalline of CdSnO3/MWCNTs.
