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Issue 2, 2012
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Anatase TiO2nanocrystals with exposed {001} facets on graphene sheets via molecular grafting for enhanced photocatalytic activity

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Abstract

Owing to their extensive practical applications and fundamental importance, the controllable synthesis of well-faceted anatase TiO2 crystal with high percentage of reactive facets has attracted increasing attention. Here, nano-sized anatase TiO2 sheets mainly dominated by {001} facets had been prepared on graphene sheets by using a facile solvothermal synthetic route. The percentage of {001} facets in TiO2 nanosheets was calculated to be ca. 64%. The morphologies, structural properties, growth procedures and photocatalytic activities of the resultant TiO2/graphene nanocomposites were investigated. In comparison with commercial P25 and pure TiO2 nanosheets, the composite exhibited significant improvement in photocatalytic degradation of the azo dye Rhodamine B under visible light irradiation. The enhancement of photocatalytic activity and stability was attributed to the effective charge anti-recombination of graphene and the high catalytic activity of {001} facets.

Graphical abstract: Anatase TiO2 nanocrystals with exposed {001} facets on graphene sheets via molecular grafting for enhanced photocatalytic activity

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Supplementary files

Article information


Submitted
28 Sep 2011
Accepted
27 Oct 2011
First published
07 Dec 2011

Nanoscale, 2012,4, 613-620
Article type
Paper

Anatase TiO2 nanocrystals with exposed {001} facets on graphene sheets via molecular grafting for enhanced photocatalytic activity

L. Sun, Z. Zhao, Y. Zhou and L. Liu, Nanoscale, 2012, 4, 613
DOI: 10.1039/C1NR11411E

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