期刊
MICROPOROUS AND MESOPOROUS MATERIALS
卷 153, 期 -, 页码 35-40出版社
ELSEVIER
DOI: 10.1016/j.micromeso.2011.12.032
关键词
Magnetite; Porosity; Electrochemistry; Dopamine
类别
资金
- National Natural Science Foundation of China [21071106]
- Specialized Research Fund for the Doctoral Program of Higher Education [20103201110016]
- National Basic Research Program of China (973 Program) [2010CB934502]
Large-scale and uniform porous magnetite nanoparticles with average diameter of 60 nm were successfully prepared using a facile hydrothermal approach without employing any surfactants or templates. These nanoparticles were self-assembled by using external magnetic field and employed to modify glassy carbon electrode, which displayed excellent electrochemical sensitivity in detecting dopamine in phosphate buffer solution and could selectively distinguish dopamine in the presence of ascorbic acid. A linear relationship between the concentrations of dopamine and its oxidation peak currents was obtained, which might find potential application in the biosensors. (C) 2011 Elsevier Inc. All rights reserved.
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