期刊
JOURNAL OF APPLIED POLYMER SCIENCE
卷 125, 期 2, 页码 1418-1424出版社
WILEY
DOI: 10.1002/app.35468
关键词
conducting polymers; films; FT-IR; nanocomposites; sensors
资金
- Department of Science and Technology, New Delhi [SR/FTP/PS-09/2007]
The performance at room temperature of nanostructured polyaniline (PANi)titanium dioxide (TiO2) ammonia gas sensors was investigated. The PANiTiO2 thin-film sensors were fabricated with a spin-coating method on glass substrates. PANiTiO2 (050%) sensor films were characterized for their structural, morphological, optical, and various gas-sensing properties. The structural analysis showed the formation of nanocrystalline TiO2, whereas PANi exhibited an amorphous nature. Morphological analysis of the PANiTiO2 nanocomposites film revealed a uniform distribution of TiO2 nanoparticles in the PANi matrix. The absorption peaks in the Fourier transform infrared spectra and ultravioletvisible spectra of the PANiTiO2 composite film were found to shift to higher wave numbers compared to those observed in pure PANi. The observed shifts were attributed to the interaction between the TiO2 particles and the PANi molecular chains. The gas-sensing properties showed that the sensors exhibited selectivity to ammonia (NH3) at room temperature. (c) 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据