通过氧化石墨烯掺杂提高聚苯胺修饰的还原氧化石墨烯复合膜的氨检测性能
Improving Ammonia Detecting Performance of Polyaniline Decorated rGO Composite Membrane with GO Doping.
作者信息
Yuan Yubin, Wu Haiyang, Bu Xiangrui, Wu Qiang, Wang Xuming, Han Chuanyu, Li Xin, Wang Xiaoli, Liu Weihua
机构信息
School of Microelectronics, School of Electronics and Information Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
The Key Lab of Micro-nano Electronics and System Integration of Xi'an City, Xi'an 710049, China.
出版信息
Materials (Basel). 2021 May 25;14(11):2829. doi: 10.3390/ma14112829.
Gas-sensing performance of graphene-based material has been investigated widely in recent years. Polyaniline (PANI) has been reported as an effective method to improve ammonia gas sensors' response. A gas sensor based on a composite of rGO film and protic acid doped polyaniline (PA-PANI) with GO doping is reported in this work. GO mainly provides NH adsorption sites, and PA-PANI is responsible for charge transfer during the gas-sensing response process. The experimental results indicate that the NH gas response of rGO is enhanced significantly by decorating with PA-PANI. Moreover, a small amount of GO mixed with PA-PANI is beneficial to increase the gas response, which showed an improvement of 262.5% at 25 ppm comparing to no GO mixing in PA-PANI.
近年来，基于石墨烯材料的气敏性能受到了广泛研究。据报道，聚苯胺（PANI）是提高氨气传感器响应的有效方法。本文报道了一种基于还原氧化石墨烯（rGO）薄膜与质子酸掺杂聚苯胺（PA-PANI）复合并掺杂氧化石墨烯（GO）的气体传感器。GO主要提供NH吸附位点，而PA-PANI负责气敏响应过程中的电荷转移。实验结果表明，通过PA-PANI修饰可显著增强rGO对NH气体的响应。此外，少量GO与PA-PANI混合有利于提高气体响应，与PA-PANI中不混合GO相比，在25 ppm时气体响应提高了262.5%。
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