In-situ decorated gold nanoparticles on polyaniline with enhanced electrocatalysis toward dopamine

被引：54
|
作者：
Wang, Ai-Jun [1 ,2 ,3 ]
Feng, Jiu-Ju [1 ,2 ,3 ]
Li, Yong-Fang [4 ]
Xi, Jun-Lan [1 ,2 ,3 ]
Dong, Wen-Ju [1 ,2 ,3 ]
机构：
[1] Henan Normal Univ, Minist Educ, Key Lab Green Chem Media & React, Xinxiang 453007, Henan, Peoples R China
[2] Henan Normal Univ, Minist Educ, Key Lab Yellow & Huai Rivers Water, Xinxiang 453007, Henan, Peoples R China
[3] Henan Normal Univ, Sch Chem & Environm Sci, Henan Key Lab Environm Pollut Control, Xinxiang 453007, Henan, Peoples R China
[4] Henan Inst Sci & Technol, Coll Chem & Chem Engn, Xinxiang 453003, Henan, Peoples R China
来源：
MICROCHIMICA ACTA | 2010年 / 171卷 / 3-4期
关键词：
Electrocatalysis; Dopamine; Electropolymerization; Polyaniline/gold nanoparticles nanocomposite; GLASSY-CARBON ELECTRODE; AU NANOPARTICLES; ASCORBIC-ACID; THIN-FILMS; COMPOSITE; POLYMER; SURFACE; SPECTROSCOPY; FABRICATION; PARTICLES;
D O I：
10.1007/s00604-010-0452-8
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Gold nanoparticles were in-situ decorated on top of a polyaniline film (GNPs-PANI) via the direct electro-reduction of the adsorbed AuCl4- ions on a glassy carbon electrode that previously was coated with PANI by electropolymerization. The GNPs-PANI composite and the performance of the resultant sensors were investigated in some detail. The sensor was applied to the oxidation of dopamine (DA) with improved catalytic activity. Its catalytic current showed wide linear response toward dopamine ranging from 3 to 115 mu M, with a low detection limit of 0.8 mu M (S/N=3). In addition, the sensor exhibits easy-operation, fast response to dopamine, as well as excellent reproducibility and stability.
引用
收藏
页码：431 / 436
页数：6
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