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Issue 7, 2015
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A highly photoactive, visible-light-driven graphene/2D mesoporous TiO2 photocatalyst

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Abstract

In this paper, we have reported a new, visible-light-driven photocatalyst composed of 2D mesoporous TiO2 on reduced graphene oxide, which enables enhanced absorption of visible light, showing outstanding charge separation ability and a large surface area. Graphene–2D mesoporous TiO2 (GOMTi) was prepared via a simple hydrothermal process by ternary self-assembly of metal oxide precursors, graphene oxide, and a surfactant. The structural strength and large interfacial contact between the graphene and two dimensional TiO2 sheet lead to a high performance photocatalyst, as compared to a conventional graphene–TiO2 nanostructure composite. In the test for degradation of methylene blue, the photodegradation rate of GOMTi was ∼9 times higher than the rate of common TiO2 nanoparticles (p25), due to the enhanced synergetic effects of graphene and TiO2.

Graphical abstract: A highly photoactive, visible-light-driven graphene/2D mesoporous TiO2 photocatalyst

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Supplementary files

Article information


Submitted
25 Mar 2015
Accepted
26 May 2015
First published
26 May 2015

Green Chem., 2015,17, 3972-3978
Article type
Paper

A highly photoactive, visible-light-driven graphene/2D mesoporous TiO2 photocatalyst

K. M. Cho, K. H. Kim, H. O. Choi and H. Jung, Green Chem., 2015, 17, 3972
DOI: 10.1039/C5GC00641D

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