Crystallinity and photocatalytic activity of liquid phase deposited TiO2 films |
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Authors: | B. Ma G. K. L. Goh J. Ma |
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Affiliation: | (1) Institute of Materials Research and Engineering, 3 Research Link, Singapore, 117602, Singapore;(2) School of Materials Science and Engineering, Nanyang Technological University, Singapore, 639798, Singapore |
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Abstract: | Anatase TiO2 films were deposited on glass substrates at 50 and 200∘C to investigate the effect of growth temperature on the photocatalytic acitivity of the films. It was observed that the films grown at 200∘C were composed of columnar crystallites and were more porous than the films grown at 50∘C which had more compact structures. Also, the film crystallinity increased from 75 to 90% if the higher growth temperature was used. Despite the higher crystallinity, it was observed that for crystallinities between 60 and 90%, the photocatalytic behavior of the films was more significantly affected by changes in the surface area. |
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Keywords: | TiO2 Photocatalysis Crystallinity |
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