Effect of impurities in TiO2 thin films on trichloroethylene conversion |
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| Authors: | SESang Eun Park Hyunku Joo Joon Wun Kang |
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| Affiliation: | a Institute of Gas Safety Technology, Korea Gas Safety Corporation, 332-1 Daeya-dong, Siheung, Kyounggi-do 429-712, Republic of Korea;b Energy Conversion and Storage Research Center, Korea Institute of Energy Research, Advanced Energy Materials and Application Department, Daeduk Science Complex 71-2 Jang-dong, Yusong-ku, Taejon 305-343, Republic of Korea;c Department of Environmental Engineering, Yonsei University, 234 Maeji, Hungub, Wonju, Kangwon-do 220-710, Republic of Korea |
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| Abstract: | In this study, we investigate the physical properties and photocatalytic activities of TiO2 thin films doped with low valence (Fe3+, Co2+, and Ni2+) and high valence (Mo5+, Nb5+, and W6+) cations. Clear difference in results from various analytical tools between groups was identified. The presence of different oxidation states and a higher degree of crystallinity in the high valence cation doped-TiO2 thin films seemed beneficial in terms of the transfer and separation of photo-generated electrons and holes in the TiO2 medium and on the surface, resulting in higher photocatalytic conversion of trichloroetylene. |
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| Keywords: | Metal doped-TiO2 Crystallinity Trichloroethylene (TCE) Photocatalysis Thin film |
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