Controlled synthesis of TiO2 nanosheets with exposed (001) facets for enhanced photocatalytic activity

3rd International Conference on New Material and Chemical Industry

材料科学;化学工业

Dai, Z.D.^1 ; Song, X.Z.^1 ; Kang, X.L.^1 ; Cao, J.K.^1 ; Hiroya, A.^2 ; Ohara, S.^2 ; Tan, Z.Q.^1

School of Petroleum and Chemical Engineering, Dalian University of Technology, No.2 Dagong Road, New District of Liaodong Bay, Panjin, LIAONING

124221, China^1

Joining and Welding Research Institute, Osaka University, 11-1 Mihogaoka, Ibaraki, Osaka

567-0047, Japan^2

关键词: Controlled synthesis;    Research interests;    Size-controllable;    Surface area;    TiO2 nanocrystals;    TiO2 photocatalyst;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/479/1/012120/pdf
DOI  :  10.1088/1757-899X/479/1/012120

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Tailor-made TiO2 nanocrystals with well-defined exposed facets have attracted increasing research interest recently. The exposed facets greatly determine the reactive activity of TiO2 nanocrystals and dominate their application potential. Size-controllable TiO2 nanosheets with highly reactive {001} facets were synthesized by a conventional hydrothermal synthesis process. The particle sizes ranged from 25 nm to several micrometres and a tuneable percentage of {001} surface area ranged from 50 % to 90 % according to the particle size. The photocatalytic activity of TiO2 nanosheets smaller than 100 nm was much higher and very stable, comparing to the commercial TiO2 photocatalysts.