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Citation: TAI Hui-Ling, JIANG Ya-Dong, XIE Guang-Zhong, DU Xiao-Song, CHEN Xuan. Preparation and Gas Sensitive Properties of Polyaniline/Titanium Oxide Composite Thin Films[J]. Acta Physico-Chimica Sinica, ;2007, 23(06): 883-888. doi: 10.3866/PKU.WHXB20070617 shu

Preparation and Gas Sensitive Properties of Polyaniline/Titanium Oxide Composite Thin Films

1.

State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Information, University of Electronic Science and Technology of China (UESTC), Chengdu 610054, P. R. China

Received Date: 22 November 2006
Available Online: 28 April 2007

Polyaniline-titanium dioxide (PANI/TiO2) composite thin film and polyaniline (PANI) thin film were prepared by combined techniques of electrostatic self-assembly and in situ chemical oxidation polymerization at room temperature, which were characterized by XPS and SEM. The PANI/TiO2 and PANI thin film gas sensors with planar interdigitated electrodes were fabricated, and the sensitive properties of sensors to toxic gases NH3 and CO were studied at room temperature. The results showed that the sensitivity, response and recovery characteristics of PANI/TiO2 thin filmwere superior to those of PANI thin film.
- PANI/TiO2; Composite thin film; Gas sensor; NH3; CO
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