CuNWs/PBS复合材料修饰电极的构建及对OPs的检测  

Construction of an electrochemical sensor based on Cu NWs/PCBs and detection of methyl parathion

作　　者：汤世文 初红涛[1,2,3] TANG Shiwen;CHU Hongtao(School of Chemistry and Chemical Engineering,Qiqihar University,Qiqihar 161006,China;Heilongjiang Industrial Hemp Processing Technology Innovation Center,Qiqihar University,Qiqihar 161006,China;Technology Innovation Center of Industrial Hemp for State Market Regulation,Qiqihar University,Qiqihar 161006,China)

机构地区：[1]齐齐哈尔大学化学与化学工程学院,黑龙江齐齐哈尔161006 [2]齐齐哈尔大学黑龙江省工业大麻加工技术创新中心,黑龙江齐齐哈尔161006 [3]齐齐哈尔大学国家市场监管技术创新中心(工业大麻),黑龙江齐齐哈尔161006

出　　处：《高师理科学刊》2024年第7期62-66,共5页Journal of Science of Teachers＇College and University

基　　金：黑龙江省省属本科高校基本科研业务费科研项目(145309305);黑龙江省教育科学规划课题(GBC1317219)。

摘　　要：采用两步水热法制备了直径均一、高长径比的铜纳米线(Cu NWs)和多孔碳球(PCBs),利用透射电镜(TEM)对其结构和形貌进行了表征.同时通过滴涂法将其修饰于玻碳电极表面,构建了电化学传感器,采用循环伏安法和交流阻抗法对电极的电化学行为进行了考察.结果表明,铜纳米线直径为5~10 nm,具有高长径比,所制传感器对K_(3)[Fe(CN)_(6)]探针具有良好的电化学响应,并将其应用于对甲基对硫磷(MP)的检测中,采用差分脉冲伏安法,在最佳条件下,氧化峰电流和甲基对硫磷的质量浓度在0.1~50 mg·L^(-1)范围内呈良好的线性关系,检出限为0.04 mg·L^(-1).此传感器具有制作简单、灵敏度高、良好的线性范围等优点,期望应用于实际样品检测.Cu nanowires(Cu NWs)and polyporous carbon nanospheres(PCBs)with uniform diameter and high aspect ratio were prepared by two-step hydrothermal method,and their structures and morphologies were characterized by transmission electron microscopy(TEM).At the same time,the electrochemical sensor was constructed by drip coating method on the surface of the glassy carbon electrode,and the electrochemical behavior of the electrode was investigated by cyclic voltammetry and AC impedance method.The results show that the diameter of copper nanowires is 5~10 nm,with a high aspect ratio,and the prepared sensor has a good electrochemical response to the K_(3)[Fe(CN)_(6)]probe,and it is applied to the detection of parathion methyl,using differential pulse voltammetry,under the best conditions,the peak oxidation current and the concentration of methyl parathion show a good linear relationship in the range of 0.1~50 mg·L^(-1),and the detection limit is 0.04 mg·L^(-1).This sensor has the advantages of simple fabrication,high sensitivity and good linear range,and is expected to be used in the detection of actual samples.

关 键 词：铜纳米线 多孔碳球 电化学传感器 甲基对硫磷 

分 类 号：O69[理学—化学]