Synthesis, Characterization, and Photocatalysis of Fe-Doped : A Combined Experimental and Theoretical Study
Fe-doped TiO2 was prepared by hydrothermal treating Ti peroxide sol with different amount of iron nitrate. Fe ions can enter TiO2 lattice by substituting Ti4+ ions, which significantly affect the crystallinity and morphology of TiO2 nanoparticles. Fe doping also influences the UV-Vis absorption and...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | International Journal of Photoenergy |
| Online Access: | http://dx.doi.org/10.1155/2012/368750 |
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| author | Liping Wen Baoshun Liu Xiujian Zhao Kazuya Nakata Taketoshi Murakami Akira Fujishima |
| author_facet | Liping Wen Baoshun Liu Xiujian Zhao Kazuya Nakata Taketoshi Murakami Akira Fujishima |
| author_sort | Liping Wen |
| collection | DOAJ |
| description | Fe-doped TiO2 was prepared by hydrothermal treating Ti peroxide sol with different amount of iron nitrate. Fe ions can enter TiO2 lattice by substituting Ti4+ ions, which significantly affect the crystallinity and morphology of TiO2 nanoparticles. Fe doping also influences the UV-Vis absorption and photoluminescence of TiO2, due to the change of electronic structure. It is shown that Fe ions are more easily doped on TiO2 surface than in bulk. The theoretical computation based on the density functional theory (DFT) shows that the Fe ions in TiO2 bulk are localized and mainly act as the recombination centers of photoinduced electrons and holes. Some results support that the Fe3+ ions on surface can form intermediate interfacial transfer pathway for electrons and holes, which is beneficial for increasing the photocatalytic activity of TiO2. The photocatalytic activity first increases and then decreases as the Fe concentration increases, which is coaffected by the bulk-doped and surface-doped Fe ions. |
| format | Article |
| id | doaj-art-ea9a5c1b4b2d403cbf34c77e42cd161f |
| institution | DOAJ |
| issn | 1110-662X 1687-529X |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Photoenergy |
| spelling | doaj-art-ea9a5c1b4b2d403cbf34c77e42cd161f2025-08-20T03:21:11ZengWileyInternational Journal of Photoenergy1110-662X1687-529X2012-01-01201210.1155/2012/368750368750Synthesis, Characterization, and Photocatalysis of Fe-Doped : A Combined Experimental and Theoretical StudyLiping Wen0Baoshun Liu1Xiujian Zhao2Kazuya Nakata3Taketoshi Murakami4Akira Fujishima5State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan City, Hubei Province 430070, ChinaState Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan City, Hubei Province 430070, ChinaState Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan City, Hubei Province 430070, ChinaPhotocatalyst Group, Kanagawa Academy of Science and Technology, KSP East 412, 3-2-1 Sakado, Takatsu-ku, Kawasaki, Kanagawa 213-0012, JapanPhotocatalyst Group, Kanagawa Academy of Science and Technology, KSP East 412, 3-2-1 Sakado, Takatsu-ku, Kawasaki, Kanagawa 213-0012, JapanPhotocatalyst Group, Kanagawa Academy of Science and Technology, KSP East 412, 3-2-1 Sakado, Takatsu-ku, Kawasaki, Kanagawa 213-0012, JapanFe-doped TiO2 was prepared by hydrothermal treating Ti peroxide sol with different amount of iron nitrate. Fe ions can enter TiO2 lattice by substituting Ti4+ ions, which significantly affect the crystallinity and morphology of TiO2 nanoparticles. Fe doping also influences the UV-Vis absorption and photoluminescence of TiO2, due to the change of electronic structure. It is shown that Fe ions are more easily doped on TiO2 surface than in bulk. The theoretical computation based on the density functional theory (DFT) shows that the Fe ions in TiO2 bulk are localized and mainly act as the recombination centers of photoinduced electrons and holes. Some results support that the Fe3+ ions on surface can form intermediate interfacial transfer pathway for electrons and holes, which is beneficial for increasing the photocatalytic activity of TiO2. The photocatalytic activity first increases and then decreases as the Fe concentration increases, which is coaffected by the bulk-doped and surface-doped Fe ions.http://dx.doi.org/10.1155/2012/368750 |
| spellingShingle | Liping Wen Baoshun Liu Xiujian Zhao Kazuya Nakata Taketoshi Murakami Akira Fujishima Synthesis, Characterization, and Photocatalysis of Fe-Doped : A Combined Experimental and Theoretical Study International Journal of Photoenergy |
| title | Synthesis, Characterization, and Photocatalysis of Fe-Doped : A Combined Experimental and Theoretical Study |
| title_full | Synthesis, Characterization, and Photocatalysis of Fe-Doped : A Combined Experimental and Theoretical Study |
| title_fullStr | Synthesis, Characterization, and Photocatalysis of Fe-Doped : A Combined Experimental and Theoretical Study |
| title_full_unstemmed | Synthesis, Characterization, and Photocatalysis of Fe-Doped : A Combined Experimental and Theoretical Study |
| title_short | Synthesis, Characterization, and Photocatalysis of Fe-Doped : A Combined Experimental and Theoretical Study |
| title_sort | synthesis characterization and photocatalysis of fe doped a combined experimental and theoretical study |
| url | http://dx.doi.org/10.1155/2012/368750 |
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