Photocatalytic degradation of gaseous toluene over Ag-doping TiO2 nanotube powder prepared by anodization coupled with impregnation method
In this work, Ag-doping TiO2 nanotubes were prepared and employed as the photocatalyst for the degradation of toluene. The TiO2 nanotube powder was produced by the rapid-breakdown potentiostatic anodization of Ti foil in chloride-containing electrolytes, and then doped with Ag through an incipient w...
| Main Authors: | , , , , |
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| Format: | Journal Article |
| Published: |
2011
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| Online Access: | http://hdl.handle.net/20.500.11937/8282 |
| _version_ | 1848745611826823168 |
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| author | Li, Xin Yong Zou, X. Qu, Z. Zhao, Q. Wang, L. |
| author_facet | Li, Xin Yong Zou, X. Qu, Z. Zhao, Q. Wang, L. |
| author_sort | Li, Xin Yong |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | In this work, Ag-doping TiO2 nanotubes were prepared and employed as the photocatalyst for the degradation of toluene. The TiO2 nanotube powder was produced by the rapid-breakdown potentiostatic anodization of Ti foil in chloride-containing electrolytes, and then doped with Ag through an incipient wetness impregnation method. The samples were characterized by scanning electron microscope, high-resolution transmission electron microscopy, X-ray diffraction, surface photovoltage measurements, X-ray photoelectron spectroscopy and N2 adsorption. The nanotubular TiO2 photocatalysts showed an outer diameter of approximately 40nm, fine mesoporous structure and high specific surface area. The photocatalytic activity of Ag-doping TiO2 nanotube powder was evaluated through photooxidation of gaseous toluene. The results indicated that the degradation efficiency of toluene could get 98% after 4h reaction using the Ag-doping TiO2 nanotubes as the photocatalyst under UV light illumination, which was higher than that of the pure TiO2 nanotubes, Ag-doping P25 or P25. Benzaldehyde species could be observed during the photocatalytic oxidation monitored by in situ FTIR, and the formed benzaldehyde intermediate during reaction would be partially oxidized into CO2 and H2O. © 2011 Elsevier Ltd. |
| first_indexed | 2025-11-14T06:20:07Z |
| format | Journal Article |
| id | curtin-20.500.11937-8282 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T06:20:07Z |
| publishDate | 2011 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-82822017-09-13T14:34:29Z Photocatalytic degradation of gaseous toluene over Ag-doping TiO2 nanotube powder prepared by anodization coupled with impregnation method Li, Xin Yong Zou, X. Qu, Z. Zhao, Q. Wang, L. In this work, Ag-doping TiO2 nanotubes were prepared and employed as the photocatalyst for the degradation of toluene. The TiO2 nanotube powder was produced by the rapid-breakdown potentiostatic anodization of Ti foil in chloride-containing electrolytes, and then doped with Ag through an incipient wetness impregnation method. The samples were characterized by scanning electron microscope, high-resolution transmission electron microscopy, X-ray diffraction, surface photovoltage measurements, X-ray photoelectron spectroscopy and N2 adsorption. The nanotubular TiO2 photocatalysts showed an outer diameter of approximately 40nm, fine mesoporous structure and high specific surface area. The photocatalytic activity of Ag-doping TiO2 nanotube powder was evaluated through photooxidation of gaseous toluene. The results indicated that the degradation efficiency of toluene could get 98% after 4h reaction using the Ag-doping TiO2 nanotubes as the photocatalyst under UV light illumination, which was higher than that of the pure TiO2 nanotubes, Ag-doping P25 or P25. Benzaldehyde species could be observed during the photocatalytic oxidation monitored by in situ FTIR, and the formed benzaldehyde intermediate during reaction would be partially oxidized into CO2 and H2O. © 2011 Elsevier Ltd. 2011 Journal Article http://hdl.handle.net/20.500.11937/8282 10.1016/j.chemosphere.2011.02.043 restricted |
| spellingShingle | Li, Xin Yong Zou, X. Qu, Z. Zhao, Q. Wang, L. Photocatalytic degradation of gaseous toluene over Ag-doping TiO2 nanotube powder prepared by anodization coupled with impregnation method |
| title | Photocatalytic degradation of gaseous toluene over Ag-doping TiO2 nanotube powder prepared by anodization coupled with impregnation method |
| title_full | Photocatalytic degradation of gaseous toluene over Ag-doping TiO2 nanotube powder prepared by anodization coupled with impregnation method |
| title_fullStr | Photocatalytic degradation of gaseous toluene over Ag-doping TiO2 nanotube powder prepared by anodization coupled with impregnation method |
| title_full_unstemmed | Photocatalytic degradation of gaseous toluene over Ag-doping TiO2 nanotube powder prepared by anodization coupled with impregnation method |
| title_short | Photocatalytic degradation of gaseous toluene over Ag-doping TiO2 nanotube powder prepared by anodization coupled with impregnation method |
| title_sort | photocatalytic degradation of gaseous toluene over ag-doping tio2 nanotube powder prepared by anodization coupled with impregnation method |
| url | http://hdl.handle.net/20.500.11937/8282 |