期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 85, 期 1-2, 页码 131-136出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/S0925-4005(02)00064-3
关键词
copper clusters; metal/polyaniline nanocomposite; chloroform; vapour sensor; chloro hydrocarbon sensor
Chemically synthesised copper/polyaniline (PANi) nanocomposite has been utilised as a chloroform sensor for ppm level vapour concentration. The response in terms of increase in do electric resistance on exposure to chloroform vapours has been observed. The FT-IR spectra of nanocomposite on exposure to chloroform show remarkable modifications in the far IR region indicating the interaction of chloroform with metal cluster. It is believed that the sensing mechanism mainly involves adsorption-desorption of chloroform at metal cluster surfaces. (C) 2002 Elsevier Science B.V. All rights reserved.
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