Room temperature NH3 sensing properties of Co-B-PANI nanocomposite films

2015 2nd International Symposium on Physics and Technology of Sensors (ISPTS) Pub Date : 2015-03-07 DOI:10.1109/ISPTS.2015.7220073

U. Patil, N. Ramgir, A. Debnath, D. K. Aswal, S. Gupta, S. Gupta, N. Patel, D. Kothari

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Abstract

In the present work, we report the room temperature NH3 sensing properties of Cobalt-boride nanoparticles intercalated polyaniline (Co-B-PANI) nanocomposite films. Polyaniline nanocomposite films (PNCF's) have been deposited at room temperatures by in-situ oxidative polymerization of aniline in the presence of Co-B nanoparticles. The PNCF exhibited a highly selective, sensitive and reversible response towards NH3. It exhibited an improved response and recovery times of 3 and 345 s, respectively towards 50 ppm of NH3. The response time in the case of PNCF was found to be better than that exhibited by pure PANI-sensor-films (7 and 400 s). Raman measurements performed before and after the exposure towards NH3 indicated a strong variation in the intensity of the peak corresponding to C=N/C-N+ stretching vibrations. Good sensitivity along with the improved response and recovery times indicated Co-B-PANI nanocomposite film to be suitable for room temperature ammonia sensing applications.

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Co-B-PANI纳米复合膜的室温NH3传感性能

在本工作中，我们报道了硼化钴纳米颗粒嵌入聚苯胺(Co-B-PANI)纳米复合膜的室温NH3传感性能。采用苯胺原位氧化聚合的方法，在室温下制备了聚苯胺纳米复合膜。PNCF对NH3具有高度选择性、敏感性和可逆性。当NH3浓度为50 ppm时，其响应时间和恢复时间分别提高了3 s和345 s。PNCF的响应时间比纯聚苯胺传感器膜的响应时间(7秒和400秒)要好。暴露于NH3前后的拉曼测量表明，C=N/C-N+拉伸振动对应的峰值强度有很大变化。良好的灵敏度以及改进的响应和恢复时间表明Co-B-PANI纳米复合膜适合于室温氨传感应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2015 2nd International Symposium on Physics and Technology of Sensors (ISPTS)

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