Electrochemical determination of dopamine based on electrospun CeO2/Au composite nanofibers

被引：54
作者：
Tong, Yan [1 ]
Li, Zhicheng [1 ]
Lu, Xiaofeng [1 ]
Yang, Liu [1 ]
Sun, Weining [1 ]
Nie, Guangdi [1 ]
Wang, Zhaojie [1 ]
Wang, Ce [1 ]
机构：
[1] Jilin Univ, Coll Chem, Alan G MacDiarmid Inst, Changchun 130012, Peoples R China
来源：
ELECTROCHIMICA ACTA | 2013年 / 95卷
基金：
中国国家自然科学基金;
关键词：
Electrospinning; CeO2/Au composite nanofibers; Electrocatalysis; Dopamine; GLASSY-CARBON ELECTRODE; SIMULTANEOUS VOLTAMMETRIC DETECTION; ASCORBIC-ACID; URIC-ACID; PASTE ELECTRODE; SEROTONIN; FILM;
D O I：
10.1016/j.electacta.2013.02.004
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
An electrochemical method for the detection of dopamine based on a glass carbon electrode modified with electrospun CeO2/Au composite nanofibers was investigated in this article. The CeO2/Au composite nanofibers were prepared by the electrospinning technique and then annealed in air. The CeO2/Au composite nanofibers were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) measurements. Cyclic voltammetry (CV) showed that the electrospun CeO2/Au composite nanofibers modified carbon glass electrode exhibited an excellent electrocatalytic response to the dopamine (DA). The detection limit (SIN = 3) was as low as 0.056 mu M and the sensitivity could reach 127 mu A mM(-1) cm(-2). All these demonstrated that the electrospun CeO2/Au composite nanofibers were good electrocatalyst for the oxidation of dopamine. (c) 2013 Elsevier Ltd. All rights reserved.
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页码：12 / 17
页数：6
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