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中文摘要：
室温条件下，采用平面叉指电极式器件，运用原位化学氧化聚合和静电力自组装相结合的方法分别制备了盐酸掺杂和对甲苯磺酸掺杂聚苯胺／纳米二氧化钛（PANI/TiO2）复合薄膜气体传感器，并通过电子扫描显微镜（SEM）对薄膜进行了分析表征，研究了其在常温下对NH3气的敏感特性。实验结果表明，盐酸掺杂PANI／TiO2复合薄膜较对甲苯磺酸掺杂PANI／TiO2薄膜具有更好的灵敏度和响应恢复特性以及更好的稳定性。该研究有助于开发低功耗、高灵敏度的NH3气体传感器。
英文摘要：
With planar interdigitated electrodes, polyaniline-titanium dioxide （PANI/TiO2） composite thin film gas sensor doped by hydrochloric acid and para toluene sulfonic acid （PTSA） respectively were prepared by combining in situ chemical oxidation polymerization and electrostatic self-assembly technique at the room temperature. The film characterized by scanning electron microscope （SEM）. The sensitive properties of sensors to NH3 at room temperature were studied. The results show that the sensitivity, response and recovery characteristic, and the stability of PANI/TiO2 composite thin film doped by hydrochloric acid are superior to that of PANI/TiO2 composite thin film doped by PTSA. This study is helpful for the development of are NH3 sensitive device with low cost and high sensitivity.
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