Selective detection of dopamine based on Cu2O@ Pt core-shell nanoparticles modified electrode in the presence of ascorbic acid and uric acid

被引：39

作者：

Jin, Jiayi ^{[1
,2
,3
]}

Mei, He ^{[1
,2
,3
]}

Wu, Huimin ^{[1
,2
,3
]}

Wang, Shengfu ^{[1
,2
,3
]}

Xia, Qinghua ^{[1
,2
,3
]}

Ding, Yu ^{[4
]}

机构：

[1] Hubei Univ, Hubei Collaborat Innovat Ctr Adv Organ Chem Mat, Wuhan 430062, Peoples R China

[2] Hubei Univ, Key Lab Synth & Applicat Organ Funct Mol, Minist Educ, Wuhan 430062, Peoples R China

[3] Hubei Univ, Coll Chem & Chem Engn, Wuhan 430062, Peoples R China

[4] Hubei Engn Univ, Coll Chem & Mat Sci, Xiaogan 432000, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2016年 / 689卷

基金：

中国国家自然科学基金;

关键词：

Cu2O@Pt core-shell nanoparticles; Non-enzymatic sensor; Dopamine; Ascorbic acid; Uric acid; OXYGEN REDUCTION REACTION; GLASSY-CARBON ELECTRODE; FILM-MODIFIED ELECTRODE; REDUCED GRAPHENE OXIDE; AU-NANOCLUSTERS; COMPOSITE FILM; FUEL-CELLS; SENSOR; CU; NANOTUBES;

D O I：

10.1016/j.jallcom.2016.07.322

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The Cu2O@Pt nanoparticles were prepared by a two-step method, using Vulcan XC-72 carbon as support (donated as Cu2O@Pt/C). Transmission electron microscopy, X-ray diffraction and X-ray photoelectron spectroscopy were used to characterize the resulting Cu2O@Pt core-shell nanoparticles. The chemically modified electrode based on Cu2O@Pt/C nanocomposites was employed to eliminate the interference from ascorbic acid and uric acid for the sensitive and selective determination of dopamine. The electrochemical results indicate that the Cu2O@Pt/C nanocomposites show better electrocatalytic activity for the oxidation of dopamine than Pt/C nanocomposites with a linear range from 10 nM to 1027.16 mu M, a detection limit of 3 nM (S/N = 3) and sensitivity of 638.0 mu A mM(-1) cm(-2). Moreover, the sensor exhibits excellent long-time stability, good reproducibility and can be applied for practical application. (C) 2016 Elsevier B. V. All rights reserved.

引用

页码：174 / 181

页数：8

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