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|Title:||Hydrous TiO2 spheres: An excellent platform for the rational design of mesoporous anatase spheres for photoelectrochemical applications|
|Keywords:||Dye-sensitized solar cells|
|Source:||Pan, J.H., Wang, Q., Bahnemann, D.W. (2014). Hydrous TiO2 spheres: An excellent platform for the rational design of mesoporous anatase spheres for photoelectrochemical applications. Catalysis Today 230 : 197-204. ScholarBank@NUS Repository. https://doi.org/10.1016/j.cattod.2013.08.007|
|Abstract:||The formation of hydrous TiO2 (or TiO2 hydrates) by forced hydrolysis is a well-known sol-gel reaction. Self-assembly of nanosized primary TiO2 hydrates to monodisperse spheres has attracted numerous research interests for various applications. Recently the resultant hydrous TiO2 spheres (HTSs) have been demonstrated to be a versatile starting material for the facile and controllable synthesis of mesoporous anatase spheres (MASs) with large surface area and well-organized nanocrystallites. This mini review firstly summarizes the chemical pathways to the synthesis of HTSs. Key parameters toward size-controllable synthesis are discussed, and the structural properties of various HTSs are compared. Then the hydro/solvothermal transformation of HTSs to MASs with selective solid or hollow inner structures is described, along with the underlying mechanism. Finally, recent advancements of MASs for environmental photocatalysis and dye-sensitized solar cell applications are briefly highlighted. © 2013 Elsevier B.V.|
|Source Title:||Catalysis Today|
|Appears in Collections:||Staff Publications|
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