Effect of Ti on the gas sensing characteristic of (Ti0.5Sn0.5)O2 solid solutions

被引：4
|
作者：
Zeng, Wen [1 ,2 ]
Miao, Bin [1 ]
Gou, Zhongping [1 ]
Lin, Liyang [1 ]
机构：
[1] Chongqing Univ, Coll Mat Sci & Engn, Chongqing 400030, Peoples R China
[2] Chongqing Univ, State Key Lab Power Transmiss Equipment & Syst Se, Chongqing 400030, Peoples R China
来源：
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES | 2012年 / 44卷 / 10期
关键词：
THIN-FILMS; SNO2; OXYGEN; SURFACE; OXIDE; SENSOR; 1ST-PRINCIPLES; CONDUCTIVITY; TEMPERATURE; FABRICATION;
D O I：
10.1016/j.physe.2012.07.005
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
In this work we report microstructure and gas sensing property of the pristine SnO2 and (Ti,Sn)O-2 solid solutions prepared via the hydrothermal method. Of all the examined volatile organic compound gases, the (Ti,Sn)O-2 solid solution exhibits somewhat lower gas response as compared to that of pristine SnO2. Further, we perform a first principles calculation to establish a surface model for solid solution and estimate its atomic configuration. The tightness of Ti-6C(Sn-6C)-O-2C bond and high oxygen vacancy formation energy for solid solution suggest that less amount of pre-adsorbed oxygen was formed on the surface, ultimately resulting in sensing performance weakening. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：2143 / 2151
页数：9
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