Yubin Yuan1,2, Haiyang Wu1,2, Xiangrui Bu1,2, Qiang Wu1,2, Xuming Wang1,2, Chuanyu Han1,2, Xin Li1,2,3, Xiaoli Wang1,2,4, Weihua Liu1,2,5. 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.
nclass="Gene">Gas-sensing performance of class="Chemical">pan class="Chemical">graphene-based material has been investigated widely in recent years. Polyaniline (PANI) has been reported as an effective method to improve ammoniagas 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 providesNH3 adsorption sites, and PA-PANI is responsible for charge transfer during the gas-sensing response process. The experimental results indicate that the NH3gas 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.
Authors: K S Novoselov; A K Geim; S V Morozov; D Jiang; Y Zhang; S V Dubonos; I V Grigorieva; A A Firsov Journal: Science Date: 2004-10-22 Impact factor: 47.728