高等学校化学学报 ›› 2015, Vol. 36 ›› Issue (8): 1491-1497.doi: 10.7503/cjcu20150137

• 分析化学 • 上一篇    下一篇

石墨烯-金纳米粒子复合膜修饰电极的制备及对双酚A的测定

方燕1, 马琳琳2, 陕多亮2, 卢小泉2()   

  1. 1.甘肃省分析测试中心, 兰州 730000
    2. 甘肃省生物电化学与环境分析重点实验室, 西北师范大学化学化工学院, 兰州 730070
  • 收稿日期:2015-02-09 出版日期:2015-08-10 发布日期:2015-07-17
  • 作者简介:联系人简介: 卢小泉, 男, 博士, 教授, 主要从事分析化学和电化学方面的研究. E-mail:luxq@nwnu.edu.cn
  • 基金资助:
    国家自然科学基金(批准号: 21327005, 21175108)、 教育部长江学者和创新团队发展计划(批准号: IRT1283)、 甘肃省创新研究群体计划(批准号: 1210RJIA001)和兰州市人才创新创业科技计划(批准号: 2014-RC-39)资助

Preparation of Graphene/Gold Nanoparticle Composite Film Modified Electrode and Its Application for Determination of Bisphenol A

FANG Yan1, MA Linlin2, SHAN Duoliang2, LU Xiaoquan2,*()   

  1. 1. The Analysis and Research Center of Gansu Province, Lanzhou 730000, China
    2.Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province,College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
  • Received:2015-02-09 Online:2015-08-10 Published:2015-07-17
  • Contact: LU Xiaoquan E-mail:luxq@nwnu.edu.cn
  • Supported by:
    † Supported by the National Natural Science Foundation of China(Nos.21327005, 21175108), the Program for Changjiang Scholars and Innovative Research Team, Ministry of Education, China(No;IRT1283), the Program for Innovative Research Group of Gansu Province, China(No.1210RJIA001) and the Program of Innovation and Entrepreneurial for Talent in Lanzhou, China(No.2014-RC-39)

摘要:

采用电化学还原技术, 通过一步电沉积制备了石墨烯-金纳米粒子复合膜修饰电极(ERGO-Au/GCE). 采用透射电子显微镜(TEM)和循环伏安(CV)法对修饰电极进行了表征, 并研究了双酚A(BPA)在该修饰电极上的电化学行为. 结果表明, 所制备的复合物修饰电极对双酚A有明显的电催化效果. 在pH=6.0的磷酸盐缓冲溶液中, 双酚A在0.3~1.0 V扫描电位范围内有1个不可逆的氧化还原峰出现. 在优化的条件下, 双酚A的浓度在3.00×10-8~1.30×10-5 mol/L范围内与其氧化峰电流呈线性关系, 检出限为1.0×10-8 mol/L(S/N=3). 将该修饰电极用于饮用水和塑料制品中双酚A含量的测定, 回收率为96.4%~103.5%.

关键词: 金纳米粒子, 石墨烯, 双酚A, 修饰电极

Abstract:

A graphene-Au nanocomposite film(ERGO-Au) modified electrodewas prepared using coelectrodeposition technique. The morphology and electrochemical properties of this hybrid membrane were characte-rized by means of transmission electron microscopy(TEM) and cyclic voltammetry(CV), respectively. The electrocatalytic activity of ERGO-Au nanocomposite for the electrooxidation of bisphenol A(BPA) was also investigated. The cyclic voltammetry of bisphenol A on the modified electrode exhibits a well defined irreversible anodic peak. Under the optimum conditions, the oxidation peak current was proportional to bisphenol A concentration in the range from 3.0×10-8 mol/L to 1.30×10-5 mol/L. The limit of detection(LOD) is 1.0×10-8 mol/L(S/N=3). The proposed method was applied for detection of bisphenol A in tap water and plastic products. The described sensor was used for the determination of BPA in tap water and plastic products with good recovery, ranging from 96.4% to 103.5%.

Key words: Gold nanoparticles, Graphene, Bisphenol A, Modified electrode

中图分类号: