能源化学(英文) ›› 2016, Vol. 25 ›› Issue (6): 917-926.DOI: 10.1016/j.jechem.2016.11.012

• REVIEWS • 上一篇    下一篇

Development of tailored TiO2 mesocrystals for solar driven photocatalysis

Peng Zhang, Mamoru Fujitsuka, Tetsuro Majima   

  1. The Institute of Scientific and Industrial Research(SANKEN), Osaka University, Mihogaoka 8-1, Ibaraki, Osaka 567-0047, Japan
  • 收稿日期:2016-08-23 修回日期:2016-10-13 出版日期:2016-11-15 发布日期:2016-11-16
  • 通讯作者: Tetsuro Majima
  • 基金资助:

    We are thankful for the help of the Comprehensive AnalysisCenter of SANKEN,Osaka University.This work has beenpartly supported by a grant-in-aid for Scientific Research (Project25220806 and others) from the Ministry of Education,Culture,Sports,Science and Technology (MEXT) of the Japanese Government.

Development of tailored TiO2 mesocrystals for solar driven photocatalysis

Peng Zhang, Mamoru Fujitsuka, Tetsuro Majima   

  1. The Institute of Scientific and Industrial Research(SANKEN), Osaka University, Mihogaoka 8-1, Ibaraki, Osaka 567-0047, Japan
  • Received:2016-08-23 Revised:2016-10-13 Online:2016-11-15 Published:2016-11-16
  • Contact: Tetsuro Majima
  • Supported by:

    We are thankful for the help of the Comprehensive AnalysisCenter of SANKEN,Osaka University.This work has beenpartly supported by a grant-in-aid for Scientific Research (Project25220806 and others) from the Ministry of Education,Culture,Sports,Science and Technology (MEXT) of the Japanese Government.

摘要: 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.

关键词: TiO2, Mesocrystal, Photocatalyst, Topotactic transformation, Doping, Charge separation, Co-catalyst, Electron flow

Abstract: 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.

Key words: TiO2, Mesocrystal, Photocatalyst, Topotactic transformation, Doping, Charge separation, Co-catalyst, Electron flow