Enhanced Visible Light Photocatalytic Activity of Mesoporous Anatase TiO2 Codoped with Nitrogen and Chlorine
Anatase mesoporous titanium dioxide codoped with nitrogen and chlorine (N-Cl-TiO2) photocatalysts were synthesized through simple one-step sol-gel reactions in the presence of ammonium chloride. The resulting materials were characterized by X-ray diffraction (XRD), transmission electron microscope (...
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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/10.1155/2012/593245 |
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| _version_ | 1832546569228910592 |
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| author | Xiuwen Cheng Xiujuan Yu Zipeng Xing Lisha Yang |
| author_facet | Xiuwen Cheng Xiujuan Yu Zipeng Xing Lisha Yang |
| author_sort | Xiuwen Cheng |
| collection | DOAJ |
| description | Anatase mesoporous titanium dioxide codoped with nitrogen and chlorine (N-Cl-TiO2) photocatalysts were synthesized through simple one-step sol-gel reactions in the presence of ammonium chloride. The resulting materials were characterized by X-ray diffraction (XRD), transmission electron microscope (TEM), X-ray photoelectron spectroscopy (XPS), and ultraviolet-visible diffuse reflection spectrum (UV-vis DRS). XRD results indicated that codoping with nitrogen and chlorine could effectively retard the phase transformation of TiO2 from anatase to rutile and the growth of the crystallite sizes. XPS revealed that nitrogen and chlorine elements were incorporated into the lattice of TiO2 through substituting the lattice oxygen atoms. DRS exhibited that the light absorption of N-Cl-TiO2 in visible region was greatly improved. As a result, the band gap of TiO2 was reduced to 2.12 eV. The photocatalytic activity of the as-synthesized TiO2 was evaluated for the degradation of RhB and phenol under visible light irradiation. It was found that N-Cl-TiO2 catalyst exhibited higher visible light photocatalytic activity than that of P25 TiO2 and N-TiO2, which was attributed to the small crystallite size, intense light absorption in visible region, and narrow band gap. |
| format | Article |
| id | doaj-art-f324651b9559431c9a515a20b78c8d2a |
| 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-f324651b9559431c9a515a20b78c8d2a2025-02-03T06:48:05ZengWileyInternational Journal of Photoenergy1110-662X1687-529X2012-01-01201210.1155/2012/593245593245Enhanced Visible Light Photocatalytic Activity of Mesoporous Anatase TiO2 Codoped with Nitrogen and ChlorineXiuwen Cheng0Xiujuan Yu1Zipeng Xing2Lisha Yang3Department of Environmental Science and Engineering, Heilongjiang University, Xuefu Road 74, Nangang District, Harbin 150080, ChinaDepartment of Environmental Science and Engineering, Heilongjiang University, Xuefu Road 74, Nangang District, Harbin 150080, ChinaDepartment of Environmental Science and Engineering, Heilongjiang University, Xuefu Road 74, Nangang District, Harbin 150080, ChinaDepartment of Environmental Science and Engineering, Heilongjiang University, Xuefu Road 74, Nangang District, Harbin 150080, ChinaAnatase mesoporous titanium dioxide codoped with nitrogen and chlorine (N-Cl-TiO2) photocatalysts were synthesized through simple one-step sol-gel reactions in the presence of ammonium chloride. The resulting materials were characterized by X-ray diffraction (XRD), transmission electron microscope (TEM), X-ray photoelectron spectroscopy (XPS), and ultraviolet-visible diffuse reflection spectrum (UV-vis DRS). XRD results indicated that codoping with nitrogen and chlorine could effectively retard the phase transformation of TiO2 from anatase to rutile and the growth of the crystallite sizes. XPS revealed that nitrogen and chlorine elements were incorporated into the lattice of TiO2 through substituting the lattice oxygen atoms. DRS exhibited that the light absorption of N-Cl-TiO2 in visible region was greatly improved. As a result, the band gap of TiO2 was reduced to 2.12 eV. The photocatalytic activity of the as-synthesized TiO2 was evaluated for the degradation of RhB and phenol under visible light irradiation. It was found that N-Cl-TiO2 catalyst exhibited higher visible light photocatalytic activity than that of P25 TiO2 and N-TiO2, which was attributed to the small crystallite size, intense light absorption in visible region, and narrow band gap.http://dx.doi.org/10.1155/2012/593245 |
| spellingShingle | Xiuwen Cheng Xiujuan Yu Zipeng Xing Lisha Yang Enhanced Visible Light Photocatalytic Activity of Mesoporous Anatase TiO2 Codoped with Nitrogen and Chlorine International Journal of Photoenergy |
| title | Enhanced Visible Light Photocatalytic Activity of Mesoporous Anatase TiO2 Codoped with Nitrogen and Chlorine |
| title_full | Enhanced Visible Light Photocatalytic Activity of Mesoporous Anatase TiO2 Codoped with Nitrogen and Chlorine |
| title_fullStr | Enhanced Visible Light Photocatalytic Activity of Mesoporous Anatase TiO2 Codoped with Nitrogen and Chlorine |
| title_full_unstemmed | Enhanced Visible Light Photocatalytic Activity of Mesoporous Anatase TiO2 Codoped with Nitrogen and Chlorine |
| title_short | Enhanced Visible Light Photocatalytic Activity of Mesoporous Anatase TiO2 Codoped with Nitrogen and Chlorine |
| title_sort | enhanced visible light photocatalytic activity of mesoporous anatase tio2 codoped with nitrogen and chlorine |
| url | http://dx.doi.org/10.1155/2012/593245 |
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