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Mesoporous TiO 2 : Preparation, Doping, and as a Composite for Photocatalysis

2013; Wiley; Volume: 5; Issue: 4 Linguagem: Inglês

10.1002/cctc.201200519

1867-3899

Wei Zhou, Honggang Fu,

Polyoxometalates: Synthesis and Applications

Abstract 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.