期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 191, 期 -, 页码 1-8出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2013.09.092
关键词
SnO2; Ti doping; Adsorption; Density-functional-theory calculations
资金
- National Natural Science of China [51202302]
- Fundamental Research Funds for Central universities [CDJZR12130051]
- Chongqing Natural Science Foundation [cstc2012jjA50011]
- JGC-S Foundation
- [24686069]
- [24656376]
We have synthesized undoped and Ti-doped SnO2 spheres with a facile yet efficient hydrothermal approach and investigated their microstructures and gas sensing response to carbon monoxide, focusing especially on the impact of Ti doping. We find that gas response of SnO2 is enhanced significantly bydoping, the origin of which is clarified in light of a proposed adsorption model. Through a combination of systematic measurements with density-functional-theory calculations, we discuss the enhancement mechanism of the gas-sensing function arising from the doping. (C) 2013 Elsevier B.V. All rights reserved.
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