Photocatalytical Properties and Theoretical Analysis of N, Cd-Codoped TiO2 Synthesized by Thermal Decomposition Method
N, Cd-codoped TiO2 have been synthesized by thermal decomposition method. The products were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), UV-visible diffuse reflectance spectra (DRS), X-ray photoelectron spectroscopy (XPS), and Brunauer-Emmett-Teller (BET) specific su...
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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/10.1155/2012/453018 |
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| author | Hongtao Gao Bing Lu Fangfang Liu Yuanyuan Liu Xian Zhao |
| author_facet | Hongtao Gao Bing Lu Fangfang Liu Yuanyuan Liu Xian Zhao |
| author_sort | Hongtao Gao |
| collection | DOAJ |
| description | N, Cd-codoped TiO2 have been synthesized by thermal decomposition method. The products were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), UV-visible diffuse reflectance spectra (DRS), X-ray photoelectron spectroscopy (XPS), and Brunauer-Emmett-Teller (BET) specific surface area analysis, respectively. The products represented good performance in photocatalytic degradation of methyl orange. The effect of the incorporation of N and Cd on electronic structure and optical properties of TiO2 was studied by first-principle calculations on the basis of density functional theory (DFT). The impurity states, introduced by N 2p or Cd 5d, lied between the valence band and the conduction band. Due to dopants, the band gap of N, Cd-codoped TiO2 became narrow. The electronic transition from the valence band to conduction band became easy, which could account for the observed photocatalytic performance of N, Cd-codoped TiO2. The theoretical analysis might provide a probable reference for the experimentally element-doped TiO2 synthesis. |
| format | Article |
| id | doaj-art-b3bfac34105e4855a3444fde6a3db6e7 |
| institution | Kabale University |
| issn | 1110-662X 1687-529X |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Photoenergy |
| spelling | doaj-art-b3bfac34105e4855a3444fde6a3db6e72025-02-03T01:09:04ZengWileyInternational Journal of Photoenergy1110-662X1687-529X2012-01-01201210.1155/2012/453018453018Photocatalytical Properties and Theoretical Analysis of N, Cd-Codoped TiO2 Synthesized by Thermal Decomposition MethodHongtao Gao0Bing Lu1Fangfang Liu2Yuanyuan Liu3Xian Zhao4State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, ChinaCollege of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, ChinaCollege of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, ChinaCollege of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, ChinaState Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, ChinaN, Cd-codoped TiO2 have been synthesized by thermal decomposition method. The products were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), UV-visible diffuse reflectance spectra (DRS), X-ray photoelectron spectroscopy (XPS), and Brunauer-Emmett-Teller (BET) specific surface area analysis, respectively. The products represented good performance in photocatalytic degradation of methyl orange. The effect of the incorporation of N and Cd on electronic structure and optical properties of TiO2 was studied by first-principle calculations on the basis of density functional theory (DFT). The impurity states, introduced by N 2p or Cd 5d, lied between the valence band and the conduction band. Due to dopants, the band gap of N, Cd-codoped TiO2 became narrow. The electronic transition from the valence band to conduction band became easy, which could account for the observed photocatalytic performance of N, Cd-codoped TiO2. The theoretical analysis might provide a probable reference for the experimentally element-doped TiO2 synthesis.http://dx.doi.org/10.1155/2012/453018 |
| spellingShingle | Hongtao Gao Bing Lu Fangfang Liu Yuanyuan Liu Xian Zhao Photocatalytical Properties and Theoretical Analysis of N, Cd-Codoped TiO2 Synthesized by Thermal Decomposition Method International Journal of Photoenergy |
| title | Photocatalytical Properties and Theoretical Analysis of N, Cd-Codoped TiO2 Synthesized by Thermal Decomposition Method |
| title_full | Photocatalytical Properties and Theoretical Analysis of N, Cd-Codoped TiO2 Synthesized by Thermal Decomposition Method |
| title_fullStr | Photocatalytical Properties and Theoretical Analysis of N, Cd-Codoped TiO2 Synthesized by Thermal Decomposition Method |
| title_full_unstemmed | Photocatalytical Properties and Theoretical Analysis of N, Cd-Codoped TiO2 Synthesized by Thermal Decomposition Method |
| title_short | Photocatalytical Properties and Theoretical Analysis of N, Cd-Codoped TiO2 Synthesized by Thermal Decomposition Method |
| title_sort | photocatalytical properties and theoretical analysis of n cd codoped tio2 synthesized by thermal decomposition method |
| url | http://dx.doi.org/10.1155/2012/453018 |
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