【摘 要】
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Polyaniline (PANI) was prepared by the chemical oxidative polymerization of aniline,and ZnO,with the mean particle size of 28 nm,was synthesized by a non-aqueou
【机 构】
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Sinopec Research Institute of Petroleum Engineering,Department of Chemistry
论文部分内容阅读
Polyaniline (PANI) was prepared by the chemical oxidative polymerization of aniline,and ZnO,with the mean particle size of 28 nm,was synthesized by a non-aqueous solvent method.The organic-inorganic PANI/ZnO hybrids with different mass fractions of PANI were obtained by mechanically mixing the prepared PANI and ZnO.The gas sensing properties of PANI/ZnO hybrids to different volatile organic compounds (VOCs) including methanol,ethanol and acetone were investigated at a low operating temperature of 90 ℃.Compared with the pure PANI and ZnO,the PANI/ZnO hybrids presented much higher response to VOCs.Meanwhile,the PANI/ZnO hybrid exhibited a good reversibility and a short response-recovery time,implying its potential application for gas sensors.The sensing mechanism was suggested to be related to the existence of p-n heterojunctions in the PANI/ZnO hybrids.
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