新型纳米金修饰玻碳电极对水杨酸的电催化氧化  

Electrocatalytic Oxidation of Salicylic Acid at Novel Gold Nanoparticle-modified Glassy Carbon Electrode

作　　者：崔艳萍[1] 杨昌柱[2] 黄健[3] 濮文虹[2] 张敬东[4] 

机构地区：[1]中国地质大学环境学院,湖北武汉430074 [2]华中科技大学环境科学与工程学院,湖北武汉430074 [3]福建师范大学闽南科技学院生化工程系,福建泉州362332 [4]华中科技大学化学与化工系,湖北武汉430074

出　　处：《电化学》2008年第3期298-303,共6页Journal of Electrochemistry

基　　金：华中科技大学"校优秀博士论文基金"(项目编号:0123260003);华中科技大学"校科学研究基金重点项目"(项目编号:2006Z002A)资助

摘　　要：借助“种子媒介纳米金属生长法”制备新型的纳米金修饰玻碳电极，应用场发射扫描电镜、紫外．可见光谱分析和电化学方法等，研究该电极的表面形貌及其电化学性能．结果表明，该修饰电极对水杨酸的电化学氧化有明显的电催化作用，电极响应灵敏度是裸玻碳电极表面的1．8倍．其氧化峰电流与水杨酸浓度在5．0×10^-7～8．0×10^-5mol／L范围内呈良好的线性关系，可用于水中痕量水杨酸的检测．A gold nano-particles modified glassy carbon electrode （GNP/GCE） was prepared by the＂ seed-mediated gold nano-particles growth method＂ . Field emission scanning electron microscopy, ultraviolet-visible （UV-vis） spectroscopy analysis and electroalaylsis were employed to study the morphology and electrochemical performances. The resulting, electrode showed excellent electro-catalytic activity toward the oxidation of salicylic acid and the response sensitivity was 1.8 fold than that obtained on GCE. Good linear relationship was obtained between response current and salicylic acid concentration in the range of 5.0 × 10^-7 - 8.0 × 10^ -5 mol/L, which could be used in the detection of trace salicylic acid.

关 键 词：纳米金 水杨酸 电催化氧化 

分 类 号：O657.1[理学—分析化学]