Citation: Chao-Sheng XU, Pei-Wen LV. Photo-assisted Deposited Titanium Dioxide Film and the Enhancement of Its Photocatalytic Water Splitting Activity[J]. Chinese Journal of Structural Chemistry, ;2021, 40(9): 1223-1230. doi: 10.14102/j.cnki.0254–5861.2011–3144 shu

Photo-assisted Deposited Titanium Dioxide Film and the Enhancement of Its Photocatalytic Water Splitting Activity

Chao-Sheng XU ^{a, b} ,
Pei-Wen LV ^b,,

a.
Fuzhou University, College of Chemical Engineering, Fuzhou 350116, China
b.
Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China

Corresponding author: Pei-Wen LV, pwlv@fjirsm.ac.cn
Received Date: 17 February 2021
Accepted Date: 16 March 2021

Fund Project: the National Natural Science Foundation of China 61306075

Figures(14)

Photo-assisted deposited method is often employed in the metal-organic chemical vapor deposition whose ion source is organic compounds. It has been proved to increase the deposition rate and improve the crystallinity of the films. We demonstrate a photo-assisted sputtering deposited method which is used to prepare high quality TiO₂ films. The crystallinity of the films is improved by the photo assistance without changing the morphology. And the structural and optical properties remain the same. The photo-assisted deposited TiO₂ film shows a H₂ evolution rate of 1.62 μmol·cm^-2·h^-1 that is about twice more than that of the pristine TiO₂ film. It is found the Mott-Schottky effect responds for the photocatalytic activity. Photo-assisted deposited films show an enhanced photocatalytic activity due to the reduction of interface recombination and the high efficiency in the transferring of photo-generated carriers.
- TiO₂,
- photo-assisted,
- Mott-Schottky,
- photocatalyst
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