Laser induced photocatalytic activity enhancement of TiO_2 thin films

Laser induced photocatalytic activity enhancement of TiO_2 thin films

In this paper, the photocatalytic activity enhancement of TiO2 thin films was realized by laser irradiation. The H2 yield of the as-irradiated film is 79 μmol/(h*m2), which is 33% more than that of the as-deposited TiO2 film. Spectrophotometer, X-ray diffraction and Raman system were employed to cha...

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Bibliographic Details
Main Authors: Jing, Ming, Hong, Ruijin, Shao, Wen, Lin, Hui, Zhang, Dawei, Zhuang, Songlin, Zhang, Daohua
Other Authors: School of Electrical and Electronic Engineering
Format: Article
Language:English
Published: 2018
Subjects:
DRNTU::Engineering::Electrical and electronic engineering
Thin Films
Surface Photochemistry
Online Access:https://hdl.handle.net/10356/89829
http://hdl.handle.net/10220/46375
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Institution: Nanyang Technological University
Language: English
Description
Summary:In this paper, the photocatalytic activity enhancement of TiO2 thin films was realized by laser irradiation. The H2 yield of the as-irradiated film is 79 μmol/(h*m2), which is 33% more than that of the as-deposited TiO2 film. Spectrophotometer, X-ray diffraction and Raman system were employed to characterize the samples. The results showed that both the scanning rate and line spacing of the laser modification have effects on photocatalytic activity. It suggests that a phase junction is formed between the amorphous and rutile phases. The increment of H2 generation could be attributed to the alignment of Fermi levels in the phase junction.

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