三维石墨烯/聚噻吩杂化材料制备及室温气敏性能

Preparation and gas sensing property of three dimensional graphene/polythiophene nanocomposite

以三维石墨烯和噻吩为原料,利用化学氧化聚合法合成二元杂化材料三维石墨烯/聚噻吩(3D-rGO/PTh),噻吩单体在载体石墨烯片的表面发生聚合反应。杂化材料表征使用扫描电镜、红外光谱仪和比表面测试仪。结果表明,杂化材料有大量空隙,具有较大的比表面积。室温下,石墨烯质量含量7%时,复合物对NO_2具有较好的气敏性能,NO_2浓度10×10^(-6)时,灵敏度达到34.1。复合材料气敏性能提高的原因在于大比表面积和协同效应。

NO_2 gas sensor based on three dimensional graphene/polythiophene（3D-rGO/PTh）hybrid was presented.PTh were anchored on the surface of 3D-rGO sheets by using 3D-rGO as templates.The developed hybrid was characterized by SEM,FT-IR and BET analysis.The NO_2 gas sensing performance of hybrid was studied and compared with that of the sensor based on bare PTh.3D-rGO/PTh showed better response to NO_2 gas than that of bare PTh.The sensitivity could reach 34.1for NO_2 of 10×10^（-6）.It shown that the synergetic behavior and large surface area allowed excellent sensitivity.