期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 195, 期 -, 页码 165-170出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2014.01.043
关键词
Gold nanoparticles; Graphene; Chitosan; Chemically modified electrode; Hydrogen peroxide; Direct electrochemistry
资金
- National Natural Science Foundation of China [20905025]
- Hunan Provincial Natural Science Foundation of China [12JJ3015]
- Program for Excellent Talents in Hunan Normal University [ET12203]
- Aid Program for Science and Technology Innovative Research Team in Higher Educational Institutions of Hunan Province
Gold nanoparticles (GNPs) were electrochemically deposited on the graphene and chitosan modified glassy carbon electrode and characterized by scanning electron microscope and cyclic voltammetry, respectively. A simple non-enzymatic H2O2 sensor was developed based on the direct electrochemistry of H2O2 in the presence of GNPs. Under the optimized conditions, the fabricated electrode displayed a linear response in the H2O2 concentration range from 5.0 mu M to 35 mM with a detection limit of 1.6 mu M estimated at a signal-to-noise ratio of 3. The proposed sensor presented some advantages including simple operation procedure, wide linear range, low detection limit, fast response time as well as good anti-interference performance, stability and reproducibility, which indicate it can act as a promising electrochemical platform for H2O2 detection. (C) 2014 Elsevier B.V. All rights reserved.
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