Issue 31, 2013
From the journal:

Physical Chemistry Chemical Physics

TiO2–graphene composites with exposed {001} facets produced by a one-pot solvothermal approach for high performance photocatalyst†

Tiewen Lu,ab   Rongbin Zhang,*a   Changyuan Hu,*bc   Fei Chen,bc   Shuwang Duobc  and  Quanhong Hubc  

* Corresponding authors

a Department of Chemistry, Nanchang University, Nanchang 330013, P. R. China
E-mail: rbzhang@ncu.edu.cn

b Jiangxi Key Laboratory of Surface Engineering, Jiangxi Science and Technology Normal University, Nanchang 330013, P. R. China
E-mail: hcy6257@163.com

c School of Materials and Mechanical & Electrical Engineering, Jiangxi Science and Technology Normal University, Nanchang 330013, P. R. China

Abstract

TiO2–graphene (TOG) composites with exposed TiO2 {001} facets were prepared by a solvothermal approach without any addition of surfactants or capping agents, only using titanium isopropoxide and graphene oxide ethanol suspension as the precursors. Graphene was covered uniformly and densely with anatase TiO2 nanoparticles, exposing the {001} facets. The X-ray photoelectron spectroscopy, photoluminescence spectroscopy and photocurrent measurements show the presence of electron transfer between TiO2 and graphene. The electron transfer between TiO2 and graphene will greatly retard the recombination of photoinduced charge carriers and prolong electron lifetime, which will contribute to the enhancement of photocatalytic performance. Accordingly, the TOG composites show high photocatalytic activity of methyl orange under UV light, likely due to the effective separation of photoinduced charge, exposure of highly reactive {001} facets and great adsorptivity of dyes.

Graphical abstract: TiO2–graphene composites with exposed {001} facets produced by a one-pot solvothermal approach for high performance photocatalyst

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Article information

DOI
https://doi.org/10.1039/C3CP50942G
Article type
Paper
Submitted
04 Mar 2013
Accepted
28 May 2013
First published
29 May 2013

Phys. Chem. Chem. Phys., 2013,15, 12963-12970

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TiO2–graphene composites with exposed {001} facets produced by a one-pot solvothermal approach for high performance photocatalyst

T. Lu, R. Zhang, C. Hu, F. Chen, S. Duo and Q. Hu, Phys. Chem. Chem. Phys., 2013, 15, 12963 DOI: 10.1039/C3CP50942G

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