对苯二酚在金_银纳米粒子修饰的玻碳电极上电化学响应的比较.pdfVIP

Vol.27 No.1 安徽工业大学学报 第27 卷 第1 期 January 2010 J. of Anhui University of Technology 2010 年 1 月 文章编号：1671-7872 （2010）01-0027-03 对苯二酚在金、银纳米粒子修饰的玻碳 电极上电化学响应的比较 张 超，董永平，俞 飞， 方 林 张千峰 , （安徽工业大学化学与化工学院分子工程与应用化学研究所，安徽马鞍山243002） 摘要：制备了柠檬酸钠保护的金和银纳米粒子，并用自组装法制备了金和银纳米粒子修饰的玻碳电极，在近中性的磷酸缓冲溶 液中，比较研究对苯二酚在金和银纳米粒子修饰玻碳电极上的电化学响应情况。结果表明金和银纳米粒子均对对苯二酚的电氧 化过程具有优越的电催化效果；与银纳米粒子修饰电极相比，金纳米粒子修饰电极表现出了良好的稳定性；对苯二酚在金纳米 粒子修饰玻碳电极上的电化学反应是受扩散控制的。 关键词：金纳米粒子；银纳米粒子；纳米修饰电极；对苯二酚 中图分类号：O657.32 文献标识码：A doi: 10.3969/j.issn.1671-7872.2010.01.006 Comparison of Electrochemical Signals of Hydroquinone on Modified Glassy Carbon Electrodes with Gold and Silver Nanoparticles ZHANG Chao, DONG Yong-ping, YU Fei, FANG Lin, ZHANG Qian-feng (Institution of Molecular Engineering and Applied Chemistry, School of Chemistry and Chemical Engineering, Anhui University of Technology, Ma′anshan 243002, China) Abstract: Gold and silver nanoparticles stabilized by citrate were prepared and self-assembled on a glassy carbon electrode. The electrochemical signals of hydroquinone on gold and silver nanoparticles modified glassy carbon electrodes were studied in neutral PBS solutions respectively. The results show that gold and silver nanoparticles exhibit excellent catalytic effects on electrochemical reactions of hydroquinone. Compared with silver nanoparticles modified electrode, gold nanoparticles modified electrode show good stability. The electrochemical reactions of hydroquinone on gold nanoparticles modified glassy carbon electrode are controlled by diffusion process. Key words: gold nanoparticles; silver nanoparticles; nanoparticles modified electro