Study of composite TiN/Ag/Cu2O/TiO2 with improved photocatalytic performance

TiO2 film has the advantage of good photochemical stability and it can be used for self-cleaning glasses. However, due to the wide band gap, the spectral response range of TiO2 film is restricted to the ultraviolet region. In this work, based on the research of TiO2 thin films, multilayer TiN/Ag/Cu2...

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Bibliographic Details
Published inProcessing and Application of Ceramics Vol. 15; no. 3; pp. 246 - 255
Main Authors Shi, Xinwei, Li, Jing, Zhu, Jingyu, Yang, Yifan, Wang, Xiaoxia, Zhu, Bailin, Xu, Liujie
Format Journal Article
LanguageEnglish
Published University of Novi Sad 01.01.2021
Subjects
photocatalytic efficiency
tin/ag/cu2o/tio2 multilayer films
tio2 thin film
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Summary:TiO2 film has the advantage of good photochemical stability and it can be used for self-cleaning glasses. However, due to the wide band gap, the spectral response range of TiO2 film is restricted to the ultraviolet region. In this work, based on the research of TiO2 thin films, multilayer TiN/Ag/Cu2O/TiO2 films were designed and successfully prepared. The structure and properties of the obtained samples were characterized by X-ray diffraction, spectral ellipsometry (SE), atomic force microscopy (AFM) and UV-Vis-NIR spectrophotometer. The results show that p-n heterojunction will be formed between Cu2O and TiO2 in the multilayer film, thus reducing the band gap of TiO2 film. Based on the analysis of the photocatalytic mechanism of the multilayer films, a conclusion may be drawn that the designed multilayer film is helpful to improve the photocatalytic efficiency of titanium dioxide and expand its utilization of sunlight.
ISSN:1820-6131
2406-1034
DOI:10.2298/PAC2103246S