电还原氧化石墨烯-金纳米棒修饰电极对酒石黄的测定  

The Electrochemically Reduced Graphene Oxide and Gold Nanorods Modified Electrode for Determination of Tartrazine

作　　者：邓克勤[1] 令玉林[1] 邱喜阳[1] 周建红[1] 

机构地区：[1]理论有机化学与功能分子教育部重点实验室,湖南科技大学化学化工学院,湖南湘潭411201

出　　处：《分析科学学报》2017年第3期383-386,共4页Journal of Analytical Science

基　　金：国家自然科学基金(No.21471052);湖南省教育厅项目(No.16B088);教育部重点实验室开放课题(No.LKF1607)

摘　　要：本文制备了氧化石墨烯-金纳米棒复合物(GO-GNRs)。利用滴涂法制备了修饰电极(GO-GNRs/GCE),通过循环伏安法,还原了GO-GNRs复合物中的GO,制得电化学还原的石墨烯-金纳米棒修饰电极(ERGO-GNRs/GCE)。研究了酒石黄在不同电极上的电流响应,结果表明,ERGO-GNRs/GCE对酒石黄的氧化有很好的电催化作用,其浓度在0.05~6.0μmol/L范围内与氧化峰电流呈良好的线性关系,检出限为15nmol/L。利用ERGO-GNRs/GCE可完成样品中酒石黄含量的测定。The nanocomposite（GO-GNRs） of graphene oxide（GO） and gold nanorods（GNRs） was prepared. The GO-GNRs modified glassy carbon electrode（GCE） was constructed by casting GO-GNRs solution on the surface of GCE. Electrochemical reduced graphene oxide（ERGO） and GNRs modified glass electrode（ERGO-GNRs/ GCE） was prepared by the reduction of GO in the composite of GO-GNRs by cyclic voltammetry. The electrochemistry behavior of tartrazine（TZ） on different electrodes was studied. It showed that ERGO-GNRs/ GCE exhibited very high electrocatalytic activity toward the oxidation of TZ. The oxidation peak currents showed good linear relationship with TZ concentration within the range of 0.05-6.0μmol/L. The detection limit was 15 nmol/L. It can be applied to the detection of TZ in samples.

关 键 词：金纳米棒 氧化石墨烯 酒石黄 电化学还原 

分 类 号：O657.1[理学—分析化学]