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

Graphene oxide (GO) nanosheets and polyoxometalate such as H(3)PW(12)O(40) (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 ta...

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Bibliographic Details
Published inPhysical chemistry chemical physics : PCCP Vol. 14; no. 37; pp. 12757 - 12763
Main Authors Zhang, Hui, Xie, Anjian, Shen, Yuhua, Qiu, Lingguang, Tian, Xingyou
Format Journal Article
LanguageEnglish
Published Cambridge Royal Society of Chemistry 05.10.2012
Subjects
Chemistry
Displays
Dopamine
Electrochemistry
Exact sciences and technology
General and physical chemistry
Graphene
Inkjet printing
Kinetics and mechanism of reactions
Multilayers
Oxidation
Oxides
Photochemistry
Composite film
Printing
Multilayer
Growth
Oxides
Chemical sensor
Thin film
Electrocatalysis
Ultraviolet irradiation
Graphene
Biosensor
Electrochemistry
Oxidation
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Summary:Graphene oxide (GO) nanosheets and polyoxometalate such as H(3)PW(12)O(40) (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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ISSN:1463-9076
1463-9084
DOI:10.1039/c2cp41561e