Selective Detection of Formaldehyde Gas Using a Cd-Doped TiO(2)-SnO(2) Sensor

We report the microstructure and gas-sensing properties of a nonequilibrium TiO(2)-SnO(2) solid solution prepared by the sol-gel method. In particular, we focus on the effect of Cd doping on the sensing behavior of the TiO(2)-SnO(2) sensor. Of all volatile organic compound gases examined, the sensor...

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Detalles Bibliográficos
Autores principales: Zeng, Wen, Liu, Tianmo, Wang, Zhongchang, Tsukimoto, Susumu, Saito, Mitsuhiro, Ikuhara, Yuichi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Molecular Diversity Preservation International (MDPI) 2009
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3260628/
https://www.ncbi.nlm.nih.gov/pubmed/22291551
http://dx.doi.org/10.3390/s91109029
Descripción
Sumario:We report the microstructure and gas-sensing properties of a nonequilibrium TiO(2)-SnO(2) solid solution prepared by the sol-gel method. In particular, we focus on the effect of Cd doping on the sensing behavior of the TiO(2)-SnO(2) sensor. Of all volatile organic compound gases examined, the sensor with Cd doping exhibits exclusive selectivity as well as high sensitivity to formaldehyde, a main harmful indoor gas. The key gas-sensing quantities, maximum sensitivity, optimal working temperature, and response and recovery time, are found to meet the basic industrial needs. This makes the Cd-doped TiO(2)-SnO(2) composite a promising sensor material for detecting the formaldehyde gas.

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