Cu_2O/还原氧化石墨烯复合材料的构筑及其在NO_x气体分子检测方面的应用  

Construction of Cu_2O / rGO Nanocomposites and Their Application in Detection of NO_x Gas Molecule

作　　者：杨颖[1] 董相廷[1] 王进贤[1] 赵博[1] 王婷婷[1] 刘哲林[1] 杨铭[1] 

机构地区：[1]长春理工大学化学与环境工程学院,长春130022

出　　处：《人工晶体学报》2015年第6期1602-1607,共6页Journal of Synthetic Crystals

基　　金：长春理工大学青年科学基金项目XQNJJ-2013-10;吉林省科技发展计划项目(20140520079JH);高等学校博士学科点专项科研基金(新教师类)(20132216120002)

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。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.

关 键 词：CU2O 还原氧化石墨烯 NOx 气敏性 

分 类 号：O614.81[理学—无机化学]