2,4,6-三氯苯酚在多壁碳纳米管修饰电极上的电化学行为研究  

Electrochemical behavior of 2,4,6-trichlorophenol on multi-walled carbon nanotubes modified electrodes

作　　者：樊静静 周正元 莫文武 熊建华 唐婷范 程昊[1,3] FAN Jing-jing;ZHOU Zheng-yuan;MO Wen-wu;XIONG Jian-hua;TANG Ting-fan;CHENG Hao(Guangxi Key Laboratory of Green Processing of Sugar Resources,College of Biological and Chemical Engineering,Guangxi University of Science and Technology,Liuzhou 545006,China;Guangxi Key Laboratory of Clean Pulp&Papermaking and Pollution Control,College of Light Industry and Food Engineering,Guangxi University,Nanning 530004,China;Province and Ministry Co-sponsored Collaborative Innovation Center of Sugarcane and Sugar Industry,Nanning 530004,China)

机构地区：[1]广西科技大学广西糖资源绿色加工重点实验室生物与化学工程学院,广西柳州545006 [2]广西大学轻工与食品工程学院广西清洁化制浆造纸与污染控制重点实验室,广西南宁530004 [3]蔗糖产业省部共建协同创新中心,广西南宁530004

出　　处：《应用化工》2020年第10期2460-2464,共5页Applied Chemical Industry

基　　金：国家自然科学基金项目(20968005);广西清洁化制浆造纸与污染控制重点实验室开放基金资助(KF201812-4);广西糖资源绿色加工重点实验室开放课题(GXTZY201701);广西高等学校高水平创新团队及卓越学者计划项目(桂教人〔2014〕7号)。

摘　　要：利用多壁碳纳米管较高比表面积、良好导电性和生物相容性等优良性能,制备多壁碳纳米管修饰玻碳电极,并研究2,4,6-三氯苯酚在多壁碳纳米管修饰电极上的电化学行为及其测定方法。采用滴涂法制备的多壁碳纳米管修饰玻碳电极作为工作电极,用循环伏安法测定2,4,6-三氯苯酚。结果表明,在最优的实验条件:pH=6.0的磷酸盐缓冲液,分散液的修饰量为5μL,扫描速率为50 mV/s下,2,4,6-三氯苯酚的浓度在10~110μmol/L内与对应的峰电流呈线性关系,相关系数为0.9958,检出限为1.81×10^-5μmol/L。并且进行实际水样测试,回收率在95.72%~103.25%。所建立的检测2,4,6-三氯苯酚新方法灵敏度高、操作简单、测定线性范围宽,可用于2,4,6-三氯苯酚的快速检测。Multi-walled carbon nanotubes(MWCNTS)have advantages of high specific surface area,good electrical conductivity and biocompatibility,thus choosing it to modify glassy carbon electrodes,and the electrochemical behavior of 2,4,6-trichlorophenol on MWCNTS modified electrodes and its determination method were studied.The glassy carbon electrode modified with multi-wall carbon nanotubes was prepared by drop coating method,and the 2,4,6-trichlorophenol was determined by cyclic voltammetry.Results showed that the concentration of 2,4,6-trichlorophenol has a linear relationship with the corresponding peak current in the range from 10~110μmol/L,under the optimal experimental conditions(phosphate buffer with pH=6.0;the modification amount of dispersion liquid was 5μL;the scanning rate is 50 mV/s),and the correlation coefficient is 0.9958,and the detection limit is 1.81×10^-5μmol/L.The recovery of simulated water samples was 95.72%~103.25%.The new method has high sensitivity,simple operation and wide linear range,which can be used for rapid detection of 2,4,6-trichlorophenol.

关 键 词：2 4 6-三氯苯酚 多壁碳纳米管 化学修饰电极 循环伏安法 

分 类 号：TQ460.72[医药卫生—药物分析学] O657.1[化学工程—制药化工]