期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 166, 期 -, 页码 141-149出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2012.02.016
关键词
TiO2; Nb doping; Volatile organic compounds; Oxygen adsorption
资金
- Fundamental Research Funds for the Central University [CDJXS10131154]
- distinguished PhD foundation from the Ministry of Education of China [0903005109044-13]
- Grants-in-Aid for Scientific Research [24686069] Funding Source: KAKEN
Using a simple hydrothermal method, the pristine and Nb doped TiO2 is prepared, and their microstructures and gas-sensing responses to the harmful volatile organic compounds are investigated with a special focus on the impact of Nb additive. We find that the gas response of TiO2 is enhanced significantly by doping NI), which is understood in theory upon proposed adsorption models. Combining experimental measurements with first-principles calculations, the working mechanism underlying such improvement in gas-sensing functions by the Nb additive is discussed. (C) 2012 Elsevier B.V. All rights reserved.
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