Gas Sensing Propery and Electric Conduction of ZnSnO3

Chinese Journal of Applied Chemistry ›› 1994, Vol. 0 ›› Issue (2): 31-34.

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Gas Sensing Propery and Electric Conduction of ZnSnO₃

Zhang Tianshu, Shen Yusheng, Jing Chuangui

Department of Materials Science and Engineering, University of Scicnce and Technology of China, Hefei 230026

Received:1993-04-20 Revised:1993-09-07 Published:1994-04-10 Online:1994-04-10

Abstract

Abstract: The adsorption of oxygen on ZnSnO₃ has been studied by X-ray photoelectron spectroscopy.At temperatures ranging from 25 ℃ to 300 ℃ the charge states of the chemisorbed oxygen were found to be O₂^- and O^-, and the former may convert into O^-(or O^2-) with increasing temperature. ZnSnO₃ is a typical surface-controlled sensor.The activation energy of oxygen adsorbed on ZnSnO₃ was 0.52eV. The ZnSnO₃-based sensor showed the greatest sensitivity to C₂H₅OH gas than to other reducing gases:petrol, C₂H₂,LPG,and H₂.

Key words: zinc stannate, gas sensor, property

Zhang Tianshu, Shen Yusheng, Jing Chuangui. Gas Sensing Propery and Electric Conduction of ZnSnO₃[J]. Chinese Journal of Applied Chemistry, 1994, 0(2): 31-34.

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Gas Sensing Propery and Electric Conduction of ZnSnO₃

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