Nafion covered core-shell structured Fe3O4@graphene nanospheres modified electrode for highly selective detection of dopamine

被引：105

作者：

Zhang, Wuxiang ^{[1
]}

Zheng, Jianzhong ^{[1
]}

Shi, Jiangu ^{[1
]}

Lin, Zhongqiu ^{[1
]}

Huang, Qitong ^{[1
]}

Zhang, Hanqiang ^{[1
]}

Wei, Chan ^{[1
]}

Chen, Jianhua ^{[1
,2
]}

Hua, Shirong ^{[1
,2
,3
]}

Hao, Aiyou ^{[3
]}

机构：

[1] Minnan Normal Univ, Coll Chem & Environm, Zhangzhou 363000, Peoples R China

[2] Minnan Normal Univ, Fujian Prov Univ Key Lab Analyt Sci, Zhangzhou 363000, Peoples R China

[3] Shandong Univ, Sch Chem & Chem Engn, Jinan 250100, Peoples R China

来源：

ANALYTICA CHIMICA ACTA | 2015年 / 853卷

关键词：

Core-shell structure; Fe3O4@graphene nanospheres/Nafion; Dopamine; Electrochemistry; SIMULTANEOUS ELECTROCHEMICAL DETERMINATION; NITROGEN-DOPED GRAPHENE; GLASSY-CARBON ELECTRODE; ASCORBIC-ACID; URIC-ACID; GOLD NANOPARTICLES; SENSOR; NANOTUBES; BIOSENSOR; OXIDE;

D O I：

10.1016/j.aca.2014.10.032

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Nafion covered core-shell structured Fe3O4@graphene nanospheres (GNs) modified glassy carbon electrode (GCE) was successfully prepared and used for selective detection dopamine. Firstly, the characterizations of hydro-thermal synthesized Fe3O4@GNs were investigated by scanning electron microscopy (SEM), transmission electron microscopy (TEM) and Raman spectroscopy. Then Fe3O4@GNs/Nafion modified electrode exhibited excellent electrocatalytic activity toward the oxidations of dopamine (DA). The interference test showed that the coexisted ascorbic acid (AA) and uric acid (UA) had no electrochemical interference toward DA. Under the optimum conditions, the broad linear relationship was obtained in the experimental concentration from 0.020 mu M to 130.0 mu M with the detection limit (S/N = 3) of 0.007 mu M. Furthermore, the core-shell structured Fe3O4@GNs/Nafion/GCE was applied to the determination of DA in real samples and satisfactory results were got, which could provide a promising platform to develop excellent biosensor for detecting DA. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：285 / 290

页数：6

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