Preparation of gold/polyaniline/multiwall carbon nanotube nanocomposites and application in ammonia gas detection |
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| Authors: | Qifei Chang Kai Zhao Xing Chen Minqiang Li Jinhuai Liu |
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| Affiliation: | (1) The Key Laboratory of Biomimetic Sensing and Advanced Robot Technology, Institute of Intelligent Machines, Chinese Academy of Science, Hefei, Anhui, 230031, People’s Republic of China;(2) Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026, People’s Republic of China |
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| Abstract: | Composites of multiwall carbon nanotubes (MWNTs), polyaniline (PANI), and gold nanoparticles were prepared by one pot synthesis.
Based on the interaction between aniline monomers and MWNTs, aniline molecules were adsorbed and polymerized on the surface
of MWNTs. The nanocomposites were characterized by transmission electron microscopy (TEM), X-ray diffraction analysis (XRD),
Fourier transform infrared spectroscopy (FT-IR), and X-ray photoemission spectroscopy (XPS). The sensors based on Au/PANI/MWNT
nanocomposites were tested for on-line monitoring of ammonia gas. The results show that the as-prepared sensors have superior
sensitivity, and good repeatability upon repeated exposure to ammonia gas. |
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