ZIF-8/碳纳米管复合材料的制备及其用于4-氯苯酚电化学传感  

Preparation of ZIF-8/Carbon Nanotubes Composite and Its Application in Electrochemical Sensing of 4-Chlorophenol

作　　者：刘建华 夏志刚 周贤钢 许程鑫 吴康兵[2] LIU Jianhua;XIA Zhigang;ZHOU Xiangang;XU Chengxin;WU Kangbing(Hubei Xinye Reconstituted Tobacco Development Co.,Ltd.,Wuhan 430014;School of Chemistry and Chemical Engineering,Huazhong University of Scienceand Technology,Wuhan 430074)

机构地区：[1]湖北新业烟草薄片开发有限公司,湖北武汉430014 [2]华中科技大学化学与化工学院,湖北武汉430074

出　　处：《分析科学学报》2021年第4期541-546,共6页Journal of Analytical Science

基　　金：国家自然科学基金(No.21775050,21976062);湖北新业烟草薄片开发有限公司项目(BP-2020-合同-0086)。

摘　　要：以聚乙烯吡咯烷酮K30为分散剂,碳纳米管(CNTs)为导电增强材料,二水合乙酸锌和2-甲基咪唑(MeIM)为前驱体,合成出一种Zn-MeIM金属有机框架材料(ZIF-8)与CNTs的复合材料(ZIF-8@CNTs)。研究表明,与ZIF-8及CNTs相比,所制备的ZIF-8@CNTs对4-氯苯酚(4-CP)的电化学氧化表现出显著的增敏效应。基于此,建立了一种高灵敏的4-CP电化学传感方法,其线性范围为0.1~6.0μmol/L,检出限(S/N=3)为0.04μmol/L。将该传感器用于污水样品中4-CP的检测,其测定结果与高效液相色谱法基本一致。A nanocomposite of metal organic framework material(ZIF-8)and multi-walled carbon nanotubes(ZIF-8@CNTs)was synthesized using polyvinylpyrrolidone K30-dispersed CNTs conducting materials and zinc acetate dihydrate and 2-methylimidazole(MeIM)precursors.Compared with ZIF-8 or CNTs alone,ZIF-8@CNTs was demonstrated to possess superior electrochemical sensing performance toward the oxidation of 4-chlorophenol(4-CP).Based on this,a highly-sensitive electrochemical sensing method was developed for 4-CP,with a linear range of 0.1-6.0μmol/L and a detection limit of 0.04μmol/L(S/N=3).This sensor was applied to the analysis of waste water samples,and the results were consisted with those obtained by high performance liquid chromatography.

关 键 词：金属有机框架材料 ZIF-8 碳纳米管 4-氯苯酚 电化学传感器 

分 类 号：O657.1[理学—分析化学]