Issue 37, 2012

Layer-by-layer inkjet printing of fabricating reduced graphene-polyoxometalate composite film for chemical sensors

Abstract

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 (Ipa) increases gradually with increasing the dopamine concentration, which may be used in electrochemical biosensors.

Graphical abstract: Layer-by-layer inkjet printing of fabricating reduced graphene-polyoxometalate composite film for chemical sensors

Supplementary files

Article information

Article type
Paper
Submitted
15 May 2012
Accepted
30 Jul 2012
First published
31 Jul 2012

Phys. Chem. Chem. Phys., 2012,14, 12757-12763

Layer-by-layer inkjet printing of fabricating reduced graphene-polyoxometalate composite film for chemical sensors

H. Zhang, A. Xie, Y. Shen, L. Qiu and X. Tian, Phys. Chem. Chem. Phys., 2012, 14, 12757 DOI: 10.1039/C2CP41561E

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