基于异金属有机骨架材料的Fe2O3/CuO/C制备及多巴胺电化学传感性能研究  

Preparation of Fe_(2)O_(3)/CuO/C based on Fe-Cu-MOF and its electrochemical sensing behaviors for dopamine

作　　者：张景瑞 张宇航 杨善厚 孟伟 桑兆虎 ZHANG Jingrui;ZHANG Yuhang;YANG Shanhou;MENG Wei;ANG Zhaohu(College of Chemical Engineering,North China University ofScience and Technology,Tangshan 063210,China;TangshanSanyou Group Co.,Ltd.,Tangshan 063000,China)

机构地区：[1]华北理工大学化学工程学院,唐山063210 [2]唐山三友集团有限公司,唐山063000

出　　处：《分析试验室》2022年第7期770-775,共6页Chinese Journal of Analysis Laboratory

基　　金：国家自然科学基金(21371155);河北省自然科学基金面上项目(B2021209015);河北省博士后科研基金(B2020003031)资助。

摘　　要：以异金属有机骨架(MOF)材料Fe-Cu-MOF为前驱体,在700℃空气气氛下热解3 h,制备了碳复合的铜铁异金属氧化物(Fe_(2)O_(3)/CuO/C)。采用X射线衍射仪(XRD)、X射线光电子能谱仪(XPS)和扫描电子显微镜(SEM)对材料的形貌、结构以及物相组成进行了表征。采用循环伏安法(CV)研究了Fe_(2)O_(3)/CuO/C修饰玻碳电极(Fe_(2)O_(3)/CuO/C/GCE)对多巴胺(DA)的电催化传感性能。研究结果表明,Fe_(2)O_(3)/CuO/C/GCE对多巴胺具有优异的电催化氧化活性,在DA浓度在1~100μmol/L和100~800μmol/L范围内,Fe_(2)O_(3)/CuO/C/GCE的氧化峰电流与DA浓度呈线性关系,灵敏度分别为212.31μA·L/(mmol·cm^(2))和42.46μA·L/(mmol·cm^(2))。该传感器具有良好的抗干扰能力和重现性。Copper iron oxide-carbon composite(Fe_(2)O_(3)/CuO/C)was successfully prepared by pyrolyzing the FeCu-MOF precursor at 700℃for 3 h in air atmosphere.The morphology,structure and phase composition of the Fe_(2)O_(3)/CuO/C were characterized by X-ray diffractometer,X-ray photoelectron spectroscopy and scanning electron microscope.The electrocatalytic sensing behaviors of glassy carbon electrode modified by Fe_(2)O_(3)/CuO/C(Fe_(2)O_(3)/CuO/C/GCE)for dopamine(DA)were studied by cyclic voltammetry.The results showed that Fe_(2)O_(3)/CuO/C/GCE had an excellent electrocatalytic oxidation activity for DA.There were two good linear relationships between the oxidation peak current of Fe_(2)O_(3)/CuO/C/GCE and DA concentration in the ranges of 1-100μmol/L and 100-800μmol/L,and the detection sensitivities were 212.31 and 42.46μA·L/(mmol·cm^(2)),respectively.The sensor possessed good anti-interference ability and reproducibility.

关 键 词：Fe-Cu-MOF Fe2O3/CuO/C 多巴胺 电化学传感器 

分 类 号：O657.1[理学—分析化学]