氮掺杂二硫化钼负载钯纳米粒子电化学检测氯霉素  

Electrochemical Detection of Chloramphenicol by Nitrogen-Doped Molybdenum Disulfide Supported Palladium Nanoparticles

作　　者：杜晓宇 董文霞 李忠平 温广明[1,2] DU Xiaoyu;DONGWenxia;LI Zhongping;WEN Guangming(School of Chemistry and Chemical Engineering,Shanxi University,Taiyuan,030006,China;School of Chemistry and Chemical Engineering,Jinzhong University,Jinzhong,030619,China;Institute of Environmental Science,Shanxi University,Taiyuan,030006,China)

机构地区：[1]山西大学化学化工学院,山西太原030006 [2]晋中学院化学化工学院,山西晋中030619 [3]山西大学环境科学研究所,山西太原030006

出　　处：《山西大学学报（自然科学版）》2022年第6期1574-1582,共9页Journal of Shanxi University(Natural Science Edition)

基　　金：山西省高校科技成果转化计划(2019KJ008);2019研究生教育创新计划项目(2019SY018);南京大学生命科学分析化学国家重点实验室(SKLACLS1911);晋中学院“1331工程”创新团队(jzxycxtd2019007)。

摘　　要：文章通过简单的水热法制备了一种新型的氮掺杂MoS_(2)负载的钯纳米粒子(N-MoS_(2)/Pd NPs)。通过透射电子显微镜(TEM),紫外光谱(UV-Vis)和X射线光电子能谱(XPS)表征了如此获得的N-MoS_(2)/Pd NPs。该传感器的电化学特性通过循环伏安法(CV)、差分脉冲伏安法(DPV)和电化学阻抗法(EIS)进行了评估。与修饰和未修饰的玻碳电极(GCE)相比,发现N-MoS_(2)/Pd NPs修饰的GCE可以显著增强氯霉素的催化性能,线性响应范围为5.0μmol/L~2000μmol/L,检出限低至1.97μmol/L(S/N=3)。文章构建的纳米电化学传感器表现出高的灵敏度,良好的稳定性以及显著的可靠性、可重复性和令人满意的用于电化学检测牛奶样品中CAP的回收率(99.6%~100.18%)。In this work,a new type of nitrogen-doped MoS_(2)-supported palladium nanoparticles(N-MoS_(2)/Pd NPs)was prepared by a simple hydrothermal method.This N-MoS_(2)/Pd NPs were characterized by transmission electron microscopy(TEM),ultraviolet spectroscopy(UV-Vis)and X-ray photoelectron spectroscopy(XPS).The electrochemical characteristics of the sensor were evaluated by cyclic voltammetry(CV),differential pulse voltammetry(DPV)and electrochemical impedance method(EIS).Compared with modified and unmodified glassy carbon electrodes(GCE),it is found that GCE modified with N-MoS_(2)/Pd NPs can significantly enhance the catalytic performance of chloramphenicol.The linear response range is 5.0μmol/L-2000μmol/L,and the detection limit is as low as 1.97μmol/L(S/N=3).The nanoelectrochemical sensor constructed in this paper shows high sensitivity,good stability,remarkable reliability,repeatability and satisfactory recovery rate(99.6%-100.18%)for the electrochemical detection of CAP in milk samples.

关 键 词：氯霉素 N掺杂 二硫化钼 钯纳米粒子 电化学传感器 

分 类 号：O657.15[理学—分析化学]