Improving Ammonia Detecting Performance of Polyaniline Decorated rGO Composite Membrane with GO Doping

Yubin Yuan; Haiyang Wu; Xiangrui Bu; Qiang Wu; Xuming Wang; Chuanyu Han; Xin Li; Xiaoli Wang; Weihua Liu

doi:10.3390/ma14112829

Improving Ammonia Detecting Performance of Polyaniline Decorated rGO Composite Membrane with GO Doping

Materials (Basel). 2021 May 25;14(11):2829. doi: 10.3390/ma14112829.

Authors

Yubin Yuan^{1

2}, Haiyang Wu^{1

2}, Xiangrui Bu^{1

2}, Qiang Wu^{1

2}, Xuming Wang^{1

2}, Chuanyu Han^{1

2}, Xin Li^{1

2

3}, Xiaoli Wang^{1

2

4}, Weihua Liu^{1

2

5}

Affiliations

¹ School of Microelectronics, School of Electronics and Information Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
² The Key Lab of Micro-nano Electronics and System Integration of Xi'an City, Xi'an 710049, China.
³ Guangdong Shunde Xi'an Jiaotong University Academy, Xi'an Jiaotong University, NO.3 Deshengdong Road, Daliang, Shunde District, Foshan 528300, China.
⁴ School of Science, Xi'an Jiaotong University, Xi'an 710049, China.
⁵ Research Institute of Xi'an Jiaotong University, Hangzhou 311215, China.

Abstract

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 NH₃ adsorption sites, and PA-PANI is responsible for charge transfer during the gas-sensing response process. The experimental results indicate that the NH₃ 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.

Keywords: PA-PANI; composite membrane; gas sensor; graphene oxide; nanocomposites; protic acid doping; reduced graphene oxide.

Abstract

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