Development of tailored TiO₂ mesocrystals for solar driven photocatalysis

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• 作者：Peng Zhang ; Mamoru Fujitsuka ; Tetsuro Majima ; ^{majima@sanken.osaka-u.ac.jp}
• 关键词：TiO2 ; Mesocrystal ; Photocatalyst ; Topotactic transformation ; Doping ; Charge separation ; Co-catalyst ; Electron flow
• 刊名：Journal of Energy Chemistry
• 出版年：2016
• 出版时间：November 2016
• 年：2016
• 卷：25
• 期：6
• 页码：917-926
• 全文大小：6040 K
• 卷排序：25

文摘

Ordered metal oxides superstructures have attracted much more attention in the fields of fuel generation and environmental purification owing to their unique physiochemical characteristics such as large surface area, fine pore structure, efficient electronic mobility, and good stability. Very recently, TiO2 mesocrystals (TMCs) having superstructures self-assembled by TiO2 nanoparticle building blocks, are of considerable interest in current research and application ranging from UV to visible light attributed to their efficient charge separation and superior photocatalytic activity. In this review, we describe the common procedures to prepare unique TMCs and overview of recent developments of TMCs during last 3 years, especially the structure-related or electronic-effected mechanism in photocatalytic reaction. Further, we introduce the characterization and fundamental properties of modified TMCs by the means of single-particle fluorescence microscopy for unraveling the charge transport and photocatalytic properties of individual TMCs and time-resolved diffuse reflectance spectroscopy (TDR) for monitoring the charge transfer dynamics. Finally, various aspects on TMCs are discussed for the future developments of energy and environmental fields.