期刊
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
卷 448, 期 -, 页码 181-185出版社
ELSEVIER
DOI: 10.1016/j.colsurfa.2014.02.028
关键词
Graphene; Dopamine; Electrochemical fabrication; Sensor
资金
- National Natural Science Foundation of China [51073114, 20933007, 51373111]
- Suzhou Nano-project [ZXG2012022]
- Opening Project of Xinjiang Key Laboratory of Electronic Information Materials and Devices [XJYS0901-2010-01]
- Academic Award for Young Graduate Scholar of Soochow University
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
Well-defined flower-like graphene-nanosheet clusters (f-RGO) have been facilely and cost-effectively fabricated by electrochemical method on the surface of a glassy carbon electrode (GCE). The obtained f-RGO was directly used for the detection of dopamine (DA) via cyclic voltammetry (CV) and differential pulse voltammetry (DPV) technique. The structure of f-RGO was confirmed by scanning electron microscopy (SEM). It is observed that the f-RGO exhibits typical flower-like interconnected macroporous architecture, which contributes much to the high performance toward DA detection as compared with that of the layer-stacking RGO. For f-RGO, DPV measurement gives a wide liner range from 5 mu M to 70 mu M and 100 mu M to 600 mu M, respectively, and a good detection limit of 3 mu M (S/N = 3) for the determination of DA. Moreover, the determination of DA with f-RGO is highly selective and reproducible, with a relative standard deviation of 3.0%. (C) 2014 Elsevier B.V. All rights reserved.
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