一步电合成聚黄尿酸电化学还原氧化石墨烯复合纳米材料用于高灵敏检测氯霉素

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鲁战光1,2, 孔倩茜2 *, 杨涛2

 (1.青岛市黄岛区排水管理办公室,山东 青岛 266500；2.青岛科技大学 化学与分子工程学院,山东 青岛 266042)

 摘要： 采用循环伏安电聚合方法成功制备了PXaERGNO复合纳米材料，通过扫描电子显微镜、循环伏安法、交流阻抗和差分脉冲伏安法的技术，对制得的PXaERGNO复合纳米材料的形貌及电化学性质等进行表征。共轭的氧化石墨烯片层与芳香环分子黄尿酸之间的ππ相互作用，能够增强黄尿酸的电聚合效率，提高了聚黄尿酸的导电能力，可利用差分脉冲伏安法技术实现对氯霉素的灵敏检测，检测范围10×10-7~10×10-4 mol·L-1，检测限达到78×10-8 mol·L-1。

 关键词： 循环伏安法； 一步电合成； 氯霉素； 电化学还原氧化石墨烯； 电聚合黄尿酸

 中图分类号： TP 212文献标志码： A

 收稿日期： 20130625

基金项目： 国家自然科学基金项目（21275084）；山东省优秀中青年科学家科研奖励基金项目(BS2012CL013)；青岛市科技计划基础研究项目(12143(23)jch).

作者简介： 鲁战光(1976—)，男，硕士.*通信联系人.

 Onestep Electrosynthesis of Poly (Xanthurenic Acid)Reduced Graphene Oxide Nanocomposite for Highly Sensitive Detection of Chloramphenicol

 LU Zhanguang1,2, KONG Qianqian2, YANG Tao2

 (1.Huangdao District Drainage Management Office,Qingdao266500,China;

2.College of Chemistry and Molecular Engineering,QingdaoUniversityof Science and Technology,Qingdao266042,China)

 Abstract: Poly(xanthurenic acid)reduced graphene oxide(PXaERGNO) nanocomposite has been successfully synthesized through electropolymerization method based on cyclic voltammetry(CV). The morphology and electrochemical properties of the prepared composite were characterized using scanning electron microscope(SEM), CV, electrochemical impedance spectroscopy(EIS) and differential pulse voltammetry(DPV). The ππ interactions between the conjugated GNO layers and aromatic ring of Xa enhanced the electropolymerization efficiency, which was accompanied with an increased electrochemical response of PXa. The good electroactive nanocomposite can serve as a highly efficient electrocatalyst for chloramphenicol via DPV. The dynamic detection range was from 10×10-7 mol·L-1 to 10×10-4 mol·L-1 with a detection limit of 78×10-8 mol·L-1.

 Key words: cyclic voltammetry; onestep electrochemical synthesis; chloramphenicol; electrochemical reduced graphene oxide; electropolymerization of polyxanthurenic acid