纳米银石墨烯多壁碳纳米管复合修饰电极检测双酚A  

Determination of bisphenol A by Ag nanoparticles/graphene/multi-walled carbon nanotubes composite modified electrode

作　　者：秦洪伟[1] 赵文鹏 刘妍[1] 连爽 尤国红[2] QIN Hong-wei;ZHAO Wen-peng;LIU Yan;LIAN Shuang;YOU Guo-hong(College of Chemistry and Materials Engineering,Bohai University,Jinzhou 121013,China;College of Physical Science and Technology,Bohai University,Jinzhou 121013,China)

机构地区：[1]渤海大学化学与材料工程学院,辽宁锦州121013 [2]渤海大学物理科学与技术学院,辽宁锦州121013

出　　处：《现代化工》2021年第2期261-264,共4页Modern Chemical Industry

基　　金：国家自然科学基金项目(41602351);2019年度辽宁省自然科学基金指导计划项目(2019-ZD-0504)。

摘　　要：利用浸渍法和电化学还原法制备了纳米银石墨烯多壁碳纳米管复合修饰电极(Ag NPs/GR/MWCNTs/GCE),采用循环伏安法(CV)表征了复合电极的电化学性能,研究了双酚A(BPA)在Ag NPs/GR/MWCNTs/GCE上的电化学行为,并在此基础上使用差分脉冲伏安法(DPV)探讨了Ag NPs/GR/MWCNTs/GCE检测BPA的可行性。结果表明,在8.0×10^(-6)~1.0×10^(-4)mol/L范围内,BPA的电化学检测峰电流值与其浓度呈明显的线性关系,线性方程为Ip=1.076 1C-5.153 6,相关系数r=0.999 4。研究表明,Ag NPs/GR/MWCNTs/GCE可用于BPA的电化学检测。Nano-silver/graphene multi-walled carbon nanotube composite modified electrode( Ag NPs/GR/MWCNTs/GCE) is prepared via impregnation method and electrochemical reduction method,and its electrochemical performance is characterized by cyclic voltammetry method.Electrochemical behavior of bisphenol A( BPA) on Ag NPs/GR/MWCNTs/GCE is studied,and differential pulse voltammetry method is employed to explore the feasibility of using Ag NPs/GR/MWCNTs/GCE to detect BPA.Results show that under the optimal conditions,the electrochemical detection peak current height of BPA has an obvious linear relationship with its concentration in the range of 8. 0×10^(-6)-1. 0×10^(-4) mol·L^(-1),with a linear equation of Ip= 1. 076 1 C-5. 153 6 and a correlation coefficient of 0. 999 4. It is shown that Ag NPs/GR/MWCNTs/GCE has a good response to the electrochemical detection of BPA and can be used for the detection of BPA.

关 键 词：石墨烯 多壁碳纳米管 纳米银胶体 电化学还原 双酚A 

分 类 号：X132[环境科学与工程—环境科学] O657.1[理学—分析化学]