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Synthesis, crystallinity control, and photocatalysis of nanostructured titanium dioxide shells

Published online by Cambridge University Press:  29 August 2012

Ji Bong Joo ,
Qiao Zhang ,
Michael Dahl ,
Francisco Zaera  and
Yadong Yin
Ji Bong Joo
Affiliation:
Department of Chemistry, University of California, Riverside, California 92521
Qiao Zhang
Affiliation:
Department of Chemistry, University of California, Riverside, California 92521
Michael Dahl
Affiliation:
Department of Chemistry, University of California, Riverside, California 92521
Francisco Zaera
Affiliation:
Department of Chemistry, University of California, Riverside, California 92521
Yadong Yin*
Affiliation:
Department of Chemistry, University of California, Riverside, California 92521
*
a)Address all correspondence to this author. e-mail: yadong.yin@ucr.edu
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Abstract

In this article, we review our recent research efforts on the synthesis, crystallinity control, and photocatalysis of nanostructured titanium dioxide (TiO2) shells. First, we introduce several synthetic methods for preparing TiO2 shell structures using either template-free or template-assisted approaches. Several methods to change the structures from amorphous to crystalline and subsequently ways to enhance the crystallinity are then discussed, including those involving the “silica-protected calcination” and “partial etching and recalcination” strategies. We also discuss the photocatalytic applications of the TiO2 nanoshells and the methods for improving their catalytic activities. Finally, we conclude with a summary and our perspective on the further development of the nanostructured TiO2 shells. It is believed that more rational design and modification strategies such as well-controlled nonmetal doping, plasmonic metal decoration and the hybridization with other semiconducting materials will significantly enhance the photocatalytic efficiency of TiO2-based catalyst materials.

Keywords

TiO2nanostructurehollow shellcore-shellcrystallinityphotocatalyst
Type
Articles
Information
Journal of Materials Research , Volume 28 , Issue 3: Focus Issue: Titanium Dioxide Nanomaterials , 14 February 2013 , pp. 362 - 368
Copyright
Copyright © Materials Research Society 2012

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