基于四氧化三铁@金纳米颗粒/壳聚糖复合物的H_2O_2电化学传感器  

Asensitive H_2O_2 sensor based on the Fe_3O_4@ AuNPs/chitosan modified electrode

作　　者：张克营[1] 张娜[1] 王红艳[1] 徐基贵[1] 史洪伟[1] 汪瑞 刘乔 刘超[1] 王聪[1] 耿涛[1] ZHANG Ke-ying;ZHANG Na;WANG Hong-yan;XV Ji-gui;SHI Hong-wei;WANG Rui;LIU Qiao;LIU Chao;WANG Cong;GENG Tao(Key Laboratory of Spin Electron and Nanomaterials, School of Chemistry and Chemical Engineering, Suzhou University, Suzhou 23400)

机构地区：[1]安徽省宿州学院自旋电子与纳米材料安徽省重点实验室化学化工学院,宿州234000

出　　处：《分析试验室》2018年第7期813-815,共3页Chinese Journal of Analysis Laboratory

基　　金：安徽省教育厅自然科学基金重点项目(KJ2017A434;KJ2016A888);宿州学院科研平台开放课题(2015ykf16);宿州学院优秀青年人才支持计划资助项目(SZXYQNL2017001)资助

摘　　要：制备了四氧化三铁@金纳米颗粒(Fe_3O_4@AuNPs)复合材料,选用滴涂法制备了Fe_3O_4@AuNPs/壳聚糖修饰电极,利用扫描电子显微镜(SEM)对制备的材料进行表征。结果表明,在浓度为0.1 mol/L磷酸盐缓冲液中(pH 7.0),Fe_3O_4@AuNPs/壳聚糖修饰电极对H_2O_2的还原具有明显的电催化作用。采用计时电流技术对H_2O_2进行检测,检测限为3.3 pmol/L(S/N=3)。此修饰电极能够用于血清中样品中的分析。In this paper,the Fe3O4@ AuNPs nano-material was synthesized,and the scanning electron microscope was used to characterize the morphology of nano-material. In 0. 1 mol/L PBS（ pH 7. 0）,Fe3O4@ AuNPs/chitosan had an obvious electrocatalytic ability for H2 O2. The time-current technology was used to detect H2 O2 with the detection limit of 3. 3 pmol/L（ S/N = 3）. In addition,the modified electrodes had good stability, reproducibility and anti-interference, and can be successfully used in the analysis of the samples in the human serum.

关 键 词：四氧化三铁 金纳米颗粒 壳聚糖 过氧化氢 

分 类 号：R446[医药卫生—诊断学]