TiO2 nanosheets synthesized by atomic layer deposition for photocatalysis

Progress in Natural Science: Materials International

Jianjun J. Shi¹  Jing Zhang¹  Gaoshan S. Huang²  Yongfeng Mei²  Alexander A. Solovev²  Yuting Zhao²  Riyanto Edy³ 

[1] College of Science, Donghua University, Shanghai 201620, China;Department of Materials Science, Fudan University, Shanghai 200433, China;State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Material Science and Engineering, Donghua University, Shanghai 201620, China;

关键词: TiO2;    Atomic layer deposition;    Nanosheet;    Photocatalysis;   

DOI  :  10.1016/j.pnsc.2016.08.010

来源: DOAJ

【 摘 要 】

Two-dimensional TiO2 nanosheets were synthesized by atomic layer deposition (ALD) on dissolvable sacrificial polymer layer. The photocatalytic performance of free-standing TiO2 nanosheets prepared with different numbers of ALD cycles (100, 300, 500, and 1000) were investigated by evaluating the degradation rates of methyl orange solutions. It is shown that the photocatalytic activity increases due to Ti3+ defect and the locally ordered structures in amorphous TiO2 nanosheets. The difference in the surface areas of nanosheets may also play a crucial role in the photocatalytic activity. The results obtained in this work can have potential applications in fields like water splitting and dye-sensitized solar cells.

【 授权许可】

Unknown