期刊
ELECTROCHIMICA ACTA
卷 142, 期 -, 页码 125-131出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2014.07.094
关键词
Graphitic carbon nitride nanosheets; Graphene oxide; Ascorbic acid; Dopamine; Uric acid
资金
- science and technology foundation of the national general administration of quality supervision in China [2012QK053]
- Fujian province natural science foundation [2012D136]
- Minnan Normal University Graduate Students' Scientific Research Projects [YJS201430]
- education scientific research project of young teachers in Fujian Province
- science and technology foundation of Fujian provincial bureau quality and technical supervision [FJQI2012029, FJQI 2013108]
Graphitic carbon nitride nanosheets with a graphite-like structure have strong covalent bonds between carbon and nitride atoms, and nitrogen atoms in the carbon architecture can accelerate the electron transfer and enhance electrical properties effectually. The graphitic carbon nitride nanosheets-graphene oxide composite was synthesized. And the electrochemical performance of the composite was investigated by cyclic voltammetry and differential pulse voltammetry ulteriorly. Due to the synergistic effects of layer-by-layer structures by pi-pi stacking or charge-transfer interactions, graphitic carbon nitride nanosheets-graphene oxide composite can improved conductivity, electro-catalytic and selective oxidation performance. The proposed graphitic carbon nitride nanosheets-graphene oxide composite modified electrode was employed for simultaneous determination of ascorbic acid, dopamine and uric acid in their mixture solution, it exhibited distinguished sensitivity, wide linear range and low detection limit. Moreover, the modified electrode was applied to detect urine and dopamine injection sample, and then the samples were spiked with certain concentration of three substances with satisfactory recovery results. (C) 2014 Elsevier Ltd. All rights reserved.
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