Sensitive and Selective Determination of Cu^(2+) Using Self-Assembly of 4-Mercaptobenzoic Acid on Gold Nanoparticles

作     者：Mi Zhou Long Han Haibo He Dongmei Deng Lin Zhang Xiaoxia Yan Zhenyu Wu Yaqi Zhu Liqiang Luo 

作者机构：College of SciencesShanghai University99 Shangda RoadShanghai 200444People’s Republic of China 

出 版 物：《Journal of Analysis and Testing》 (分析检测（英文）)

年 卷 期：2019年第3卷第4期

页      面：306-312页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070303[理学-有机化学] 0703[理学-化学] 

基　　金：This research is supported by the National Natural Science Foundation of China(Nos.61571278 61571280) 

主　　题：4-Mercaptobenzoic acid Self-assembly Electrochemical sensor Cu2+ 

摘      要：Cu^(2+)is a bio-accumulative and toxic environmental pollutant,so its sensitive and selective detection is of great *** this work,gold nanoparticles were electrochemically deposited on fluorine-doped tin oxide and characterized by scanning electron microscope and cyclic voltammetry.4-Mercaptobenzoic acid(4-MBA),which contained carboxyl chelator,was self-assembled on the surface of gold nanoparticles through S-Au *** strong chelation of Cu^(2+)with 4-MBA formed a stable Cu^(2+)-4-MBA complex,which was confirmed by energy-dispersive X-ray *** wave voltammetry was applied to determine the concentration of Cu^(2+).Under optimized condition,the oxidation peak current was proportional to the concentration of Cu^(2+)in the range of 10-1500 nM with limit detection of 8 *** proposed electrochemical sensor showed excellent selectivity towards Cu^(2+).In addition,the applicability of the developed sensor was evaluated by determin-ing the concentrations of Cu^(2+)in river water samples,which were consistent with the results of inductively coupled plasma mass spectroscopy.