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.
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)
出处
《分析试验室》
EI
CAS
CSCD
北大核心
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。
