石墨烯/银纳米颗粒复合材料的制备及其对双氧水的电化学检测  

Synthesis of rGO/AgNPs Composites with an Application to Electrochemically Detecting Hydrogen Peroxide

作　　者：刘杰[1] 赵振廷[1] 史健芳[1] 张文栋[1] 胡杰[1] LIU Jie;ZHAO Zhenting;SHI Jianfang;ZHANG Wendong;HU Jie(Micro and Nano System Research Center, Key Laboratory of Advanced Transducers and Intelligent Control System, Shanxi Province and Ministry of Education, College of Information Engineering, Taiyuan University of Technology, Taiyuan 030024)

机构地区：[1]太原理工大学信息工程学院,新型传感器与智能控制教育部和山西省重点实验室,微纳系统研究中心,太原030024

出　　处：《材料导报》2016年第24期11-15,共5页Materials Reports

基　　金：山西省科技重大专项(20121101004);山西省高等学校特色重点学科建设项目(晋教财[2012]45号)

摘　　要：以氧化石墨烯(GO)和硝酸银为原材料,聚乙烯吡咯烷酮(PVP)为还原剂和稳定剂,通过水热法制备出还原氧化石墨烯/银纳米颗粒(rGO/AgNPs)复合材料。采用透射电子显微镜(TEM)、X射线衍射(XRD)及紫外-可见分光光度计(UV-Vis)对rGO/AgNPs复合材料的形貌、组成和结构进行表征。同时,将rGO/AgNPs复合材料修饰到玻碳电极表面制备出过氧化氢(H_2O_2)电化学传感器,通过循环伏安法(CV)和计时安培响应法(i-t)对传感器进行电化学性能测试。实验结果表明:制备的rGO/AgNPs传感器具有较好的电化学性能,其对H_2O_2检测的灵敏度为340.6μA·(mmol/L)^(-1)·cm^(-2),响应时间为3s,最低检测极限为7.5μmol/L(S/N=3),线性检测范围为20~4950μmol/L(线性相关系数为R=0.9973)。In this paper,reduced graphene oxide(rGO)and silver nanoparticles(AgNPs)composites were prepared through hydrothermal method utilizing graphene oxide(GO)and silver nitrate as raw materials,and using poly(N vinyl2pyrrolidone)(PVP)as reductant and stabilizer.The morphology,composition and structure of rGO/AgNPs hybrids were characterized by transmission electron microscopy(TEM),X ray diffraction(XRD)and ultravio let visible spectroscopy(UV Vis).Meanwhile,a H2O2electrochemical sensor was developed by modifying rGO/AgNPs composites on the surface of glassy carbon electrode,and the electrochemical properties were investigated by cyclic voltammetry and amperometry for H2O2detection.The measured results demonstrated that as prepared rGO/AgNPs electrochemical sensor exhibited the sensitivity of340.6μA·(mmol/L)-1·cm-2,a short response time of3s,a low detection limit of7.5μmol/L(S/N=3)with a linear concentration response ranging from20-4950μmol/L(R=0.9973).

关 键 词：还原氧化石墨烯 银纳米颗粒 过氧化氢 电化学传感器 循环伏安法 

分 类 号：O65[理学—分析化学]