| 聚吡咯/二氧化钛复合氨敏薄膜的制备及特性研究 |
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| 引用本文： | 蒋亚东,太惠玲,谢光忠,赵明静. 聚吡咯/二氧化钛复合氨敏薄膜的制备及特性研究[J]. 电子科技大学学报(社会科学版), 2006, 0(Z1) |
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| 作者姓名： | 蒋亚东 太惠玲 谢光忠 赵明静 |
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| 作者单位： | 电子科技大学光电信息学院 成都610054 |
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| 基金项目： | 国有自然科学基金(60372002，60425101) |
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| 摘 要： | 采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吡咯/纳米二氧化钛(PPy/TiO_2)复合薄膜,并进行了表面电阻测试及紫外-可见光谱分析、原子力显微镜分析．利用平面叉指电极结构制备了PPy和PPy/TiO_2薄膜气体传感器,研究了其在常温下对有毒气体NH_3的敏感性．结果表明,相同条件下PPy/TiO_2复合薄膜传感器的响应/恢复时间均优于PPy薄膜传感器．同时测试了PPy/TiO_2复合薄膜传感器的湿度特性和稳定性．
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| 关 键 词： | PPy/TiO_2 复合薄膜 气体传感器 NH_3 |
Preparation and Sensitivity Study of Polypyrrole/TiO_2 Composite NH_3-Sensitive Thin Films |
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| JIANG Ya-dong TAI Hui-ling XIE Guang-zhong ZHAO Ming-jing. Preparation and Sensitivity Study of Polypyrrole/TiO_2 Composite NH_3-Sensitive Thin Films[J]. Journal of University of Electronic Science and Technology of China(Social Sciences Edition), 2006, 0(Z1) |
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| Authors: | JIANG Ya-dong TAI Hui-ling XIE Guang-zhong ZHAO Ming-jing |
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| Abstract: | Polypyrrole(PPy)/TiO_2 nanocomposite thin films were fabricated by electrostatic self-assembly and in situ chemical oxidation polymerization combined technique.The surface resistances of PPy/TiO_2 thin films were measured,and the films were characterized by UV-vis spectroscopy and Atomic Force Microscopy(AFM). With the assistance of interdigitated electrodes the gas sensors using PPy and PPy/TiO_2 thin films were achieved. The sensitivities of sensors to toxic gases NH_3 at room temperature were studied.The results show that the response/recovery time of PPy/TiO_2 composite thin films gas sensor were superior to those of PPy thin film sensor under the same condition.At the same time,the humidity sensitive properties and stability of PPy/TiO_2 composite thin films gas sensor were tested. |
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| Keywords: | PPy/TiO_2 nanocomposite thin films gas sensor NH_3 |
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