Gas Sensing Performance of Macroporous SnO2 Thin Film Prepared by Using Carbonaceous Polysaccharide Microspheres as Pore-Forming Agent

Dong Xiang Zhou; Lu Gan; Qiu Yun Fu; Shu Ping Gong; Huan Liu; Wei Luo; Jun Zhao

doi:10.4028/www.scientific.net/KEM.543.121

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 543Gas Sensing Performance of Macroporous SnO2 Thin...

Gas Sensing Performance of Macroporous SnO₂ Thin Film Prepared by Using Carbonaceous Polysaccharide Microspheres as Pore-Forming Agent

Abstract:

The macroporous SnO₂ thin film has been successfully prepared on alumina substrate with printed Ag interdigital electrodes by sol-gel dip-coating method. The carbonaceous polysaccharide microspheres synthesized by hydrothermal method were used as pore-forming agent. The SnO₂ thin film prepared without using carbon microspheres was also synthesized for comparison. X-ray diffraction and scanning electron microscopy were taken to study the micro-characteristics of samples. The influences of operating temperature, gas concentration and structure feature on the H₂S sensing performance of SnO₂ thin film samples were systematically studied. Compared with SnO₂ thin film prepared without using carbon microspheres, the macroporous SnO₂ thin film showed a considerably reduced recovery time and good response-recovery properties.

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Periodical:

Key Engineering Materials (Volume 543)

Pages:

121-124

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.543.121

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Online since:

March 2013

Authors:

Dong Xiang Zhou, Lu Gan, Qiu Yun Fu, Shu Ping Gong, Huan Liu, Wei Luo, Jun Zhao

Keywords:

Gas Sensor, H₂S, Macroporous SnO₂, Thin Film

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