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
聚苯胺/二氧化钛复合薄膜的制备及其气敏性能
室温条件下, 运用静电力自组装和原位化学氧化聚合相结合的方法制备了聚苯胺/纳米二氧化钛(PANI/TiO2)复合薄膜和聚苯胺(PANI)薄膜, 并通过XPS和SEM对薄膜进行了分析表征. 采用平面叉指电极式器件制备了PANI/TiO2复合薄膜和PANI薄膜气体传感器, 研究了其在常温下对有毒气体NH3和CO 的敏感性能. 结果表明, PANI/TiO2复合薄膜较PANI薄膜具有更优的灵敏度和响应恢复特性.
English
Preparation and Gas Sensitive Properties of Polyaniline/Titanium Oxide Composite Thin Films
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.
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