Journal
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
Volume 14, Issue 37, Pages 12757-12763Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2cp41561e
Keywords
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Funding
- The National Science Foundation of China [91022032, 21171001, 50973001, 21173001]
- Science Foundation for Excellent Youth Scholars of Higher Education of Anhui Province [2012SQRL011]
- 211 Project of Anhui University [33050038]
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Graphene oxide (GO) nanosheets and polyoxometalate such as H3PW12O40 (PTA) are prepared into a multilayer film via a layer-by-layer inkjet printing method. The GO/PTA composite thin film shows linear, uniform and regular layer-by-layer growth. Under UV-irradiation, a photoreduction reaction takes place in the film which converts GO to reduced GO (rGO) due to the photoreduction activity of polyoxometalate clusters. According to the cyclic voltammograms measurement, the rGO/PTA composite film displays good electrocatalytic activity for the oxidation of dopamine (DA). The oxidation peak current (I-pa) increases gradually with increasing the dopamine concentration, which may be used in electrochemical biosensors.
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