Electrochemical method for synthesis of a ZnFe 2O 4/TiO 2 composite nanotube array modified electrode with enhanced photoelectrochemical activity
An electrode with intimate and well-aligned ZnFe 2O 4/TiO 2 composite nanotube arrays is prepared via electrochemical anodization of pure titanium foil in fluorine-containing ethylene glycol, followed by a novel cathodic electrodeposition method. The deposition of ZnFe 2O 4 is promoted in the selfal...
| Main Authors: | , , , , |
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| Format: | Journal Article |
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Wiley
2010
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| Online Access: | http://hdl.handle.net/20.500.11937/35407 |
| _version_ | 1848754488808046592 |
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| author | Hou, Y. Li, Xin Yong Zhao, Q. Quan, X. Chen, G. |
| author_facet | Hou, Y. Li, Xin Yong Zhao, Q. Quan, X. Chen, G. |
| author_sort | Hou, Y. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | An electrode with intimate and well-aligned ZnFe 2O 4/TiO 2 composite nanotube arrays is prepared via electrochemical anodization of pure titanium foil in fluorine-containing ethylene glycol, followed by a novel cathodic electrodeposition method. The deposition of ZnFe 2O 4 is promoted in the selfaligned, vertically oriented TiO 2 nanotube arrays but minimized at the tube entrances. Thus, pore clogging is prevented. Environmental scanning electron microscopy, energy-dispersive X-ray spectra, high-resolution transmission electron microscopy, X-ray diffraction patterns, and X-ray photoelectron spectroscopy indicate that the as-prepared samples are highly ordered and vertically aligned TiO 2 nanotube arrays with ZnFe 2O 4 nanoparticles loading. The TiO 2 nanotubes are anatase with the preferential orientation of <101> plane. Enhanced absorption in both UVand visible light regions is observed for the composite nanotube arrays. The current-voltage curve of ZnFe 2O 4-loaded TiO 2 nanotube arrays reveals a rectifying behavior. The enhanced separation of photoinduced electrons and holes is demonstrated by surface photovoltage and photocurrent measurements. Meanwhile, the photoelectrochemical investigations verify that the ZnFe 2O 4/TiO 2 composite nanotube array modified electrode has a more effective photoconversion capability than the aligned TiO 2 nanotube arrays alone. In addition, the photoelectrocatalytic ability of the novel electrode is found enhanced in the degradation of 4-chlorophenol. © 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. |
| first_indexed | 2025-11-14T08:41:13Z |
| format | Journal Article |
| id | curtin-20.500.11937-35407 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:41:13Z |
| publishDate | 2010 |
| publisher | Wiley |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-354072023-08-02T06:39:08Z Electrochemical method for synthesis of a ZnFe 2O 4/TiO 2 composite nanotube array modified electrode with enhanced photoelectrochemical activity Hou, Y. Li, Xin Yong Zhao, Q. Quan, X. Chen, G. An electrode with intimate and well-aligned ZnFe 2O 4/TiO 2 composite nanotube arrays is prepared via electrochemical anodization of pure titanium foil in fluorine-containing ethylene glycol, followed by a novel cathodic electrodeposition method. The deposition of ZnFe 2O 4 is promoted in the selfaligned, vertically oriented TiO 2 nanotube arrays but minimized at the tube entrances. Thus, pore clogging is prevented. Environmental scanning electron microscopy, energy-dispersive X-ray spectra, high-resolution transmission electron microscopy, X-ray diffraction patterns, and X-ray photoelectron spectroscopy indicate that the as-prepared samples are highly ordered and vertically aligned TiO 2 nanotube arrays with ZnFe 2O 4 nanoparticles loading. The TiO 2 nanotubes are anatase with the preferential orientation of <101> plane. Enhanced absorption in both UVand visible light regions is observed for the composite nanotube arrays. The current-voltage curve of ZnFe 2O 4-loaded TiO 2 nanotube arrays reveals a rectifying behavior. The enhanced separation of photoinduced electrons and holes is demonstrated by surface photovoltage and photocurrent measurements. Meanwhile, the photoelectrochemical investigations verify that the ZnFe 2O 4/TiO 2 composite nanotube array modified electrode has a more effective photoconversion capability than the aligned TiO 2 nanotube arrays alone. In addition, the photoelectrocatalytic ability of the novel electrode is found enhanced in the degradation of 4-chlorophenol. © 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. 2010 Journal Article http://hdl.handle.net/20.500.11937/35407 10.1002/adfm.200902390 Wiley restricted |
| spellingShingle | Hou, Y. Li, Xin Yong Zhao, Q. Quan, X. Chen, G. Electrochemical method for synthesis of a ZnFe 2O 4/TiO 2 composite nanotube array modified electrode with enhanced photoelectrochemical activity |
| title | Electrochemical method for synthesis of a ZnFe 2O 4/TiO 2 composite nanotube array modified electrode with enhanced photoelectrochemical activity |
| title_full | Electrochemical method for synthesis of a ZnFe 2O 4/TiO 2 composite nanotube array modified electrode with enhanced photoelectrochemical activity |
| title_fullStr | Electrochemical method for synthesis of a ZnFe 2O 4/TiO 2 composite nanotube array modified electrode with enhanced photoelectrochemical activity |
| title_full_unstemmed | Electrochemical method for synthesis of a ZnFe 2O 4/TiO 2 composite nanotube array modified electrode with enhanced photoelectrochemical activity |
| title_short | Electrochemical method for synthesis of a ZnFe 2O 4/TiO 2 composite nanotube array modified electrode with enhanced photoelectrochemical activity |
| title_sort | electrochemical method for synthesis of a znfe 2o 4/tio 2 composite nanotube array modified electrode with enhanced photoelectrochemical activity |
| url | http://hdl.handle.net/20.500.11937/35407 |