期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 689, 期 -, 页码 174-181出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2016.07.322
关键词
Cu2O@Pt core-shell nanoparticles; Non-enzymatic sensor; Dopamine; Ascorbic acid; Uric acid
资金
- National Natural Science Foundation of China through a project entitled The synthesis of Pt-M/C nanoparticles and construction of non-enzymatic electrochemical biosensor [21205030]
- National Nature Science Foundation of China [51402096]
- Hubei Key Laboratory of Pollutant Analysis & Reuse Technology [PA160104]
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing (Wuhan University of Technology) [2015-KF-13]
- Natural Science Fund for Creative Research Groups of Hubei Province of China through a project entitled Controllable Synthesis and Application of Nano-/microsized Functional Materials [2014CFA015]
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.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据