【摘要】 采用氧化石墨(GO)为碳源,CuSO4为铜源,葡萄糖为还原剂,70℃回流,制备得到Cu2O/还原氧化石墨烯复合材料。该复合材料具有层状结构,八面体的Cu2O粒子均匀地生长在还原氧化石墨的表面。采用Cu2O/还原氧化石墨烯复合材料组装成气敏元件,在室温下对NOx气体分子进行检测,结果表明,该材料在室温下对97.0ppmNOx有很较好的气敏响应,灵敏度为17.42%以上,响应时间为13.33s。该传感器的最低检测浓度为0.97ppmNOx,对NOx分子具有非常高的气敏选择性。更多还原

【Abstract】 Cu2O / rGO nanocomposites were synthesized via a facile reflux process at 70 ℃ using graphene oxide( GO),CuSO4,glucose as carbon resource,copper resource and reducing agent. The Cu2O / rGO nanocomposites have layered structure,in which the octahedral Cu2O particles uniformly grown on the surface of the reductive graphite oxide( rGO). When being used as gas sensors for detection of NOx at room temperature, the nanocomposite achieved a good gas sensing response to 97 ppm NOx,the sensitivity can reach to 17. 42%,and the response time is 13. 33 s. All the results suggest that the Cu2O / rGO nanocomposite with low detection limit of 97 ppm is a potential gas sensing material.更多还原