基于离子液体/Bi2WO6光电化学检测多巴胺
Photoelectrochemical Determination of Dopamine Based on Ionic Liquid/Bi2WO6
岑亚来 1覃思莹 1杨书恒 1蓝莉 1韦铭情 1诸葛文凤1
作者信息
- 1. 广西民族师范学院,广西崇左 532200
- 折叠
摘要
本研究采用水热法制备花状Bi2WO6,然后将离子液体(IL)/Bi2WO6复合材料滴涂到ITO电极,制备得到IL/Bi2WO6/ITO光电极并成功应用于多巴胺的含量测定.本文采用X-射线衍射(XRD)光谱、扫描电子显微镜(SEM)表征Bi2WO6的结构和形貌,通过安培电流-时间曲线法(i-t)、电化学阻抗谱法(EIS)研究传感器的检测性能.结果表明,在最优条件下,基于IL/Bi2WO6/ITO构建的光电化学(PEC)传感器对多巴胺检测具有较高的灵敏度和稳定性,在0.25～37.5 μmoUL浓度范围内具有良好的线性响应,检测限为0.093 μmol/L(S/N=3).
Abstract
In this study,flower-like Bi2WO6 was prepared by hydrothermal method,and then the photoelectrochemical(PEC)for the detection of dopamine was developed based on IL/Bi2WO6/ITO photoelectrode.The structure and morphology of Bi2WO6 were characterized by X-Ray Diffraction(XRD)and scanning electron microscope(SEM).The detection performance of the sensor was studied by Amperometric i-t Curve(i-t)and Electrochemical impedance spectroscopy(EIS).Under the best conditions,the PEC sensor shows satisfactory selectivity,sensitivity and stability to dopamine.The PEC sensor has outstanding selectivity,sensitivity and stability for detection of dopamine and produces a linear response in the concentration range of 0.25～37.5 μmol/L.The detection limit was 0.093 μmol/L(S/N=3).
关键词
Bi2WO6/离子液体/光电化学/多巴胺Key words
Bi2WO6/ionic liquid/photoelectrochemistry/dopamine引用本文复制引用
基金项目
国家级大学生创新创业训练计划项目(202110604013)
广西高校中青年教师科研能力提升项目(2021KY0768)
广西民族师范学院科研项目(2021YB041)
出版年
2024
NETL
NSTL
万方数据