期刊
RSC ADVANCES
卷 4, 期 52, 页码 27625-27629出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4ra04046e
关键词
-
资金
- National Basic Research Program of China [2012CB933301]
- National Natural Science Foundation of China [21305070, 21204038, 81273409, 21375139]
- Natural Science Foundation of Jiangsu Province [BK20130861]
- Ministry of Education of China [IRT1148, 20123223110007, 20133223120013]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
- Scientific Research Foundation of Nanjing University of Posts and Telecommunications [NY212033]
- Ordinary University Graduate Student Scientific Research Innovation Projects of Jiangsu Province [CXLX13_447]
An electrochemical sensor has been developed for simultaneous detection of dopamine (DA), uric acid (UA) and ascorbic acid (AA) based on a gold nanoparticle-decorated MoS2 nanocomposite (AuNPs@MoS2) modified electrode. The AuNPs@MoS2 nanocomposite has been synthesized by electrodeposition of AuNPs on the MoS2 nanosheets, which possesses better properties than pure AuNPs and MoS2. The AuNPs@MoS2 film modified electrode showed excellent electrocatalytic activity toward the oxidation of AA, DA and UA with three well-resolved oxidation peaks. The peak separation of AA-DA, DA-UA and AA-UA is 151 mV, 137 mV and 288 mV, respectively, which permits the modified electrode to individually or simultaneously analyze AA, DA and UA by differential pulse voltammetry (DPV). Under optimum conditions, the AuNPs@MoS2 modified electrode exhibits linear response toward AA, DA and UA in the range of 50-100 000 mu M, 0.05-30 mu M and 50-40 000 mu M, respectively. Moreover, the MoS2-based modified electrode was successfully employed to determine DA in human serum samples with satisfactory results.
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