摘要
采用电化学还原的方法制备了修饰电极,构建了电还原氧化石墨烯/镍-镍氧化物的化学传感器.通过拉曼(Raman)光谱、场发射扫描电子显微镜(FE-SEM)和X射线光电子能谱(XPS)对该传感器进行表征,利用差分脉冲伏安(DPV)法研究该传感器的电化学行为,制备的传感器显示了较好的对对羟基苯甲酸甲酯(MP)的电催化能力,可用于检测MP.在优化条件下,该传感器在5~60μmol·L^(-1)范围内呈良好的线性关系,检出限为0.47μmol·L^(-1).该传感器重复性良好、灵敏度高,选择性和稳定性好,已成功地应用于化妆品中MP的检测,回收率在97%~109%之间.
The modified electrode was prepared by the electrochemical reduction method,and the chemical sensor of electroreduction graphene oxide/nickel-nickel oxide was constructed.The sensor was characterized by Raman spectroscopy,field emission scanning electron microscope(FE-SEM),and X-ray photoelectron spectroscopy(XPS).The electrochemical behavior of the sensor was analyzed by differential pulse voltammetry(DPV).The sensor showed good electrocatalytic ability and can be used to detect methylparaben(MP).Under optimized conditions,the sensor showed a good linear relationship in the range of 5—60μmol·L^(-1),and the detection limit was 0.47μmol·L^(-1).The sensor has good repeatability,high sensitivity,selectivity,and stability.The developed sensor has been successfully applied to the detection of MP in cosmetics,and the recovery rate is between 97%and 109%.
作者
孙心悦
文颖
杨海峰
SUN Xinyue;WEN Ying;YANG Haifeng(College of Chemistry and Materials Science,Shanghai Normal University,Shanghai 200234,China)
出处
《上海师范大学学报（自然科学版）》
2021年第5期575-585,共11页
Journal of Shanghai Normal University(Natural Sciences)
基金
国家自然科学基金(21475088)。
