Light-Driven Preparation, Microstructure, and Visible-Light Photocatalytic Property of Porous Carbon-Doped TiO2
Highly porous carbon-doped TiO2 (C-TiO2) has been prepared, for the first time, through a light-driven approach using crystalline titanium glycolate (TG) as the single-source precursor. Although the nonthermally prepared porous C-TiO2 is amorphous, it shows a remarkable visible-light photocatalytic...
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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/10.1155/2012/720183 |
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| author | Xiao-Xin Zou Guo-Dong Li Jun Zhao Juan Su Xiao Wei Kai-Xue Wang Yu-Ning Wang Jie-Sheng Chen |
| author_facet | Xiao-Xin Zou Guo-Dong Li Jun Zhao Juan Su Xiao Wei Kai-Xue Wang Yu-Ning Wang Jie-Sheng Chen |
| author_sort | Xiao-Xin Zou |
| collection | DOAJ |
| description | Highly porous carbon-doped TiO2 (C-TiO2) has been prepared, for the first time, through a light-driven approach using crystalline titanium glycolate (TG) as the single-source precursor. Although the nonthermally prepared porous C-TiO2 is amorphous, it shows a remarkable visible-light photocatalytic activity higher than that of nitrogen-doped TiO2 (N-TiO2) due to its significant surface area (530 m2/g) and pore-rich structure. X-ray photoelectron, electron paramagnetic resonance, and UV-Vis diffuse reflectance spectroscopy reveal that the as-prepared porous C-TiO2 photocatalyst contains Ti–O–C bonds which result in visible-light absorption of the material at wavelengths less than 550 nm. Furthermore, it is discovered that the Ti–O–C bonds in the as-prepared C-TiO2 is easily transformed to coke-type species under mild thermal treatment (200°C). The resulting coke-containing porous TiO2 is an even better visible-light photocatalyst, almost twice as effective as N-TiO2, because of its stronger visible-light absorption. The Ti–O–C and the coke-containing porous TiO2 materials follow two different mechanisms in the visible-light photocatalysis process for degradation of methylene blue. |
| format | Article |
| id | doaj-art-44d3f38f9de342c38475f92ebda545d8 |
| institution | OA Journals |
| issn | 1110-662X 1687-529X |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Photoenergy |
| spelling | doaj-art-44d3f38f9de342c38475f92ebda545d82025-08-20T02:37:46ZengWileyInternational Journal of Photoenergy1110-662X1687-529X2012-01-01201210.1155/2012/720183720183Light-Driven Preparation, Microstructure, and Visible-Light Photocatalytic Property of Porous Carbon-Doped TiO2Xiao-Xin Zou0Guo-Dong Li1Jun Zhao2Juan Su3Xiao Wei4Kai-Xue Wang5Yu-Ning Wang6Jie-Sheng Chen7School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaState Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, ChinaState Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, ChinaSchool of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaSchool of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaSchool of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaSchool of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaSchool of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaHighly porous carbon-doped TiO2 (C-TiO2) has been prepared, for the first time, through a light-driven approach using crystalline titanium glycolate (TG) as the single-source precursor. Although the nonthermally prepared porous C-TiO2 is amorphous, it shows a remarkable visible-light photocatalytic activity higher than that of nitrogen-doped TiO2 (N-TiO2) due to its significant surface area (530 m2/g) and pore-rich structure. X-ray photoelectron, electron paramagnetic resonance, and UV-Vis diffuse reflectance spectroscopy reveal that the as-prepared porous C-TiO2 photocatalyst contains Ti–O–C bonds which result in visible-light absorption of the material at wavelengths less than 550 nm. Furthermore, it is discovered that the Ti–O–C bonds in the as-prepared C-TiO2 is easily transformed to coke-type species under mild thermal treatment (200°C). The resulting coke-containing porous TiO2 is an even better visible-light photocatalyst, almost twice as effective as N-TiO2, because of its stronger visible-light absorption. The Ti–O–C and the coke-containing porous TiO2 materials follow two different mechanisms in the visible-light photocatalysis process for degradation of methylene blue.http://dx.doi.org/10.1155/2012/720183 |
| spellingShingle | Xiao-Xin Zou Guo-Dong Li Jun Zhao Juan Su Xiao Wei Kai-Xue Wang Yu-Ning Wang Jie-Sheng Chen Light-Driven Preparation, Microstructure, and Visible-Light Photocatalytic Property of Porous Carbon-Doped TiO2 International Journal of Photoenergy |
| title | Light-Driven Preparation, Microstructure, and Visible-Light Photocatalytic Property of Porous Carbon-Doped TiO2 |
| title_full | Light-Driven Preparation, Microstructure, and Visible-Light Photocatalytic Property of Porous Carbon-Doped TiO2 |
| title_fullStr | Light-Driven Preparation, Microstructure, and Visible-Light Photocatalytic Property of Porous Carbon-Doped TiO2 |
| title_full_unstemmed | Light-Driven Preparation, Microstructure, and Visible-Light Photocatalytic Property of Porous Carbon-Doped TiO2 |
| title_short | Light-Driven Preparation, Microstructure, and Visible-Light Photocatalytic Property of Porous Carbon-Doped TiO2 |
| title_sort | light driven preparation microstructure and visible light photocatalytic property of porous carbon doped tio2 |
| url | http://dx.doi.org/10.1155/2012/720183 |
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