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Vol. 175, Issue 7, July 2014, pp. 262-267




The Research of Micro-structure and Gas Sensitivity of SnO2

* Mingxin Song, Rui Wu

College of Applied Science, Harbin University of Science and Technology, Harbin 150080, China
Tel.: 18845109786, fax: 86-451-86390766

* E-mail: songmingxin@126.com


Received: 4 July 2014 /Accepted: 28 July 2014 /Published: 31 July 2014

Digital Sensors and Sensor Sysstems


Abstract: This paper adopts Sol-gel method and solid state reaction to make SnO2 matrix material and Sb2O3 is used as zuji to make SnO2 gas sensor under different sintering temperature. XRD analysis, SEM analysis and response time restoration test of working voltage sensitivity are choose to research SnO2 gas sensor constituents and influence factor on sensing properties by processing. Experiment results show that when the SnO2 make by sol-get method and Sb2O3 take up 2 %, Polyvinyl alcohol as an organic binder, platinum as catalyst, SnO2 gas sensor can get optimal integral sensing properties.


Keywords: SnO2, Gas sensitive character, Microstructure.


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