Electrocatalytic oxidation of kojic acid at a reduced graphene sheet modified glassy carbon electrode
文献类型：期刊论文
| 作者 | Wang, Yi1 ; Zhang, Dun1; Wu, Jiajia1,2
|
| 刊名 | JOURNAL OF ELECTROANALYTICAL CHEMISTRY
 |
| 出版日期 | 2012 |
| 卷号 | 664页码:111-116 |
| 关键词 | Reduced graphene sheets Electrocatalytic oxidation Kojic acid Kinetic parameter Glassy carbon |
| ISSN号 | 1572-6657 |
| 通讯作者 | Zhang, D (reprint author), Chinese Acad Sci, Inst Oceanol, Shandong Prov Key Lab Corros Sci, Qingdao 266071, Peoples R China. |
| 英文摘要 | A simple procedure has been developed to prepare a glassy carbon (GC) electrode modified with reduced graphene sheets (RGSs) (RGSs/GC). The electrocatalytic oxidation of kojic acid on the RGSs/GC electrode in 0.2 M HAc-NaAc buffer solution has been studied using cyclic voltammetry and chronoamperometry. Compared with the unmodified GC electrode, a decrease in overpotential and large enhancement of oxidation current for kojic acid oxidation has been achieved with the RGSs/GC electrode. The kinetic parameters of the kojic acid oxidation reaction electrocatalyzed by RGSs have also been calculated. The diffusion coefficient of kojic acid has been estimated as 1.5 x 10(-5) cm(2) s(-1) for the experimental conditions, using chronoamperometry. The transfer coefficient for electron transfer and the number of electrons transferred in the overall reaction have been calculated to be 0.53 and 1, respectively. Under the optimized conditions, the oxidation peak current was proportional to kojic acid concentration in the range of 0.01-0.14 mM with a current sensitivity of 42.9 mu A mM(-1) and correlation coefficient of 0.9950, suggesting that RGSs are a potential electrode material for electrochemical sensors for kojic acid detection. Crown Copyright (C) 2011 Published by Elsevier B.V. All rights reserved. |
| 学科主题 | Chemistry, Analytical ; Electrochemistry |
| 收录类别 | SCI |
| 原文出处 | 10.1016/j.jelechem.2011.11.004 |
| 语种 | 英语 |
| WOS记录号 | WOS:000300816100017 |
| 公开日期 | 2013-09-24 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/12467]  |
| 专题 | 海洋研究所_海洋腐蚀与防护研究发展中心 |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Shandong Prov Key Lab Corros Sci, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Yi,Zhang, Dun,Wu, Jiajia. Electrocatalytic oxidation of kojic acid at a reduced graphene sheet modified glassy carbon electrode[J]. JOURNAL OF ELECTROANALYTICAL CHEMISTRY,2012,664:111-116. |
| APA | Wang, Yi,Zhang, Dun,&Wu, Jiajia.(2012).Electrocatalytic oxidation of kojic acid at a reduced graphene sheet modified glassy carbon electrode.JOURNAL OF ELECTROANALYTICAL CHEMISTRY,664,111-116. |
| MLA | Wang, Yi,et al."Electrocatalytic oxidation of kojic acid at a reduced graphene sheet modified glassy carbon electrode".JOURNAL OF ELECTROANALYTICAL CHEMISTRY 664(2012):111-116. |
入库方式： OAI收割
来源：海洋研究所
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