首页|Structure and mass spectrometry study of nanometer Sn-α-Fe2O3 carbon monoxide sensor materials
Structure and mass spectrometry study of nanometer Sn-α-Fe2O3 carbon monoxide sensor materials
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The Sn-α-Fe2O3 is one kinds of gas sensor materials， which is evolved from α-Fe2O3。 In this paper， Sn-α-Fe2O3 was fabricated by liquid phase coprecipitation， and the carrier concentration was adjusted by the n-type Sn dopant。 The particle morphology was examined by TEM， the lattice parameter was determined by XRD， and the surface area to mass ratio S0 was determined by BET。 The mass spectrum was used to determinate absorption properties and the absorption mechanism。 It was found that the Sn-α-Fe2O3 particle was taken the shape of needle， and the long axis was about 120 nm and the short axis was 30nm。 The resistivity could be improved by Sn dopant。 The S0 was proportional to the Sn dopant content of the Sn-α-Fe2O3。 Mass spectrometry results showed that the change of the resistivity was due to the change of the carrier concentration。
Nanometer materialsα-Fe2O3Sn-α-Fe2O3COGas sensor
Ye Jianfeng、Pang Weizheng、Wang Yufeng、Lv Daxin、Chen Yan
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School of Information and Communication Engineering Harbin Engineering University Harbin 15001,China
Jiangnan Electronic and Communications Research Institute Jiaxing,Zhejiang Province,314033,China
China international conference on nanoscience and technology
Chengdu(CN)
The 6th China international conference on nanoscience and technology
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