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Mesoporous TiO 2 : Preparation, Doping, and as a Composite for Photocatalysis
Author(s) -
Zhou Wei,
Fu Honggang
Publication year - 2013
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201200519
Subject(s) - mesoporous material , photocatalysis , materials science , mesoporous organosilica , heterojunction , nanotechnology , fabrication , doping , composite number , chemical engineering , mesoporous silica , catalysis , composite material , chemistry , optoelectronics , organic chemistry , medicine , alternative medicine , pathology , engineering
Mesoporous materials are widely used in solar cells, lithium‐ion batteries, sensors, and supercapacitors. Mesoporous TiO 2 is also highly active in photocatalysis, owing to the benefits of the mesoporous network in promoting the diffusion of the reactants and products, as well as in facilitating access to the reactive sites on the surface of the photocatalysts. This Minireview focuses on the development of mesoporous TiO 2 , metal/nonmetal‐doped mesoporous TiO 2 networks, and mesoporous TiO 2 composites. The design and synthesis of mesoporous TiO 2 , including the formation of various mesostructured frameworks, pore‐size control, large‐pore‐size fabrication, and highly thermally stable mesoporous‐network formation, are described in detail. From an application viewpoint, the subsequent fabrication of doped and multifunctional heterojunctions in mesoporous TiO 2 is necessary for further improving its photocatalytic performance. The doping of mesoporous TiO 2 with metals or nonmetals could extend the absorption edge into the visible‐light spectrum and improve the separation efficiency of photogenerated electron–hole pairs. The fabrication of mesoporous TiO 2 composites, especially heterojunctions, could make full use of the characteristics of each component for improving the overall photocatalytic performance. In view of this fact, mesoporous TiO 2 still possesses significant room for development in photocatalysis and is worthy of greater attention in the future.