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
收藏
页码：174 / 181
页数：8
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