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学科主题: 物理化学
题名: Adsorption behavior of ractopamine on carbon nanoparticle modified electrode and its analytical application
作者: Yao, Su1;  Hu, Yufei1;  Li, Gongke1;  Zhang, Yukui2
通讯作者: YufeiHu ;  李攻科
关键词: Carbon nanoparticle ;  Ractopamine ;  Adsorption ;  pi-pi interaction ;  Salt linkage
刊名: ELECTROCHIMICA ACTA
发表日期: 2012-08-30
DOI: 10.1016/j.electacta.2012.05.078
卷: 77, 页:83-88
收录类别: SCI
文章类型: Article
部门归属: 18
项目归属: 1810
产权排名: 2,4
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Electrochemistry
研究领域[WOS]: Electrochemistry
英文摘要: In this paper, carbon nanoparticle (CNP) with abundant oxygen-containing groups was prepared. The adsorption behavior of ractopamine on the CNP surface was investigated by electrochemical study. Two oxidative peaks of ractopamine were observed at 0.60 and 0.82 V. The oxidative peaks were distinctly enhanced on the CNP surface and the enhancements were result from the adsorption. The adsorption mechanism was discussed in detail and deduced to be via pi-pi interaction and salt linkage. The salt linkage between the secondary amide of ractopamine and the carboxyl group on CNP surfaces was confirmed. It provided a novel electron transfer channel for the electrochemical oxidation of phenolic groups. A sensitive differential pulse voltammetry method based on the adsorption was proposed for the determination of ractopamine with the detection limit of 2.0 x 10(-10) mol L-1. This method was successfully applied to the analysis of ractopamine in urine sample. (C) 2012 Elsevier Ltd. All rights reserved.
关键词[WOS]: GRAPHENE OXIDE ;  COMPOSITE FILM ;  DIRECT ELECTROCHEMISTRY ;  AQUEOUS-SOLUTION ;  GLUCOSE-OXIDASE ;  TRICLOSAN ;  BIOSENSOR ;  GRAPHITE
语种: 英语
WOS记录号: WOS:000307131300013
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/118304
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Sun Yat Sen Univ, Sch Chem & Chem Engn, Guangzhou 510275, Guangdong, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116011, Peoples R China

Recommended Citation:
Yao, Su,Hu, Yufei,Li, Gongke,et al. Adsorption behavior of ractopamine on carbon nanoparticle modified electrode and its analytical application[J]. ELECTROCHIMICA ACTA,2012,77:83-88.
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