Graphene oxide as a structure-directing agent for the two-dimensional interface engineering of sandwich-like graphene–g-C3N4 hybrid nanostructures with enhanced visible-light photoreduction of CO2 to methane

Wee-Jun Ong; Lling-Lling Tan; Siang-Piao Chai; Siek-Ting Yong

doi:10.1039/C4CC08996K

Graphene oxide as a structure-directing agent for the two-dimensional interface engineering of sandwich-like graphene–g-C₃N₄ hybrid nanostructures with enhanced visible-light photoreduction of CO₂ to methane

Wee-Jun Ong,^a Lling-Lling Tan,^a Siang-Piao Chai*^a and Siek-Ting Yong^a

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* Corresponding authors

^a Multidisciplinary Platform of Advanced Engineering, Chemical Engineering Discipline, School of Engineering, Monash University, Jalan Lagoon Selatan, Bandar Sunway, Malaysia
E-mail: chai.siang.piao@monash.edu
Fax: +60 3 551 46207
Tel: +60 3 551 46234

Abstract

A facile one-pot impregnation–thermal reduction strategy was employed to fabricate sandwich-like graphene–g-C₃N₄ (GCN) nanocomposites using urea and graphene oxide as precursors. The GCN sample exhibited a slight red shift of the absorption band edge attributed to the formation of a C–O–C bond as a covalent cross linker between graphene and g-C₃N₄. The GCN sample demonstrated high visible-light photoactivity towards CO₂ reduction under ambient conditions, exhibiting a 2.3-fold enhancement over pure g-C₃N₄. This was ascribed to the inhibition of electron–hole pair recombination by graphene, which increased the charge transfer.

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Publication details

The article was received on 11 Nov 2014, accepted on 18 Nov 2014 and first published on 20 Nov 2014

Article type: Communication

DOI: 10.1039/C4CC08996K

Citation: Chem. Commun., 2015,51, 858-861

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Graphene oxide as a structure-directing agent for the two-dimensional interface engineering of sandwich-like graphene–g-C₃N₄ hybrid nanostructures with enhanced visible-light photoreduction of CO₂ to methane

W. Ong, L. Tan, S. Chai and S. Yong, Chem. Commun., 2015, 51, 858
DOI: 10.1039/C4CC08996K
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Chemical Communications

Graphene oxide as a structure-directing agent for the two-dimensional interface engineering of sandwich-like graphene–g-C₃N₄ hybrid nanostructures with enhanced visible-light photoreduction of CO₂ to methane

Abstract

Supplementary files

Publication details

Graphene oxide as a structure-directing agent for the two-dimensional interface engineering of sandwich-like graphene–g-C₃N₄ hybrid nanostructures with enhanced visible-light photoreduction of CO₂ to methane

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