TiO2 nanotube/Ag-AgBr three-component nanojunction for efficient photoconversion
A TiO2 nanotube/Ag-AgBr three-component nanojunction with enhanced visible-light activity was synthesized by a two-step approach including an electrochemical anodization technique followed by an in situ photo-assisted dipping and deposition approach. Ag/AgBr nanoparticles with good dispersion were e...
| Main Authors: | , , , , |
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| Format: | Journal Article |
| Published: |
2011
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| Online Access: | http://hdl.handle.net/20.500.11937/42399 |
| _version_ | 1848756409031720960 |
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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 | A TiO2 nanotube/Ag-AgBr three-component nanojunction with enhanced visible-light activity was synthesized by a two-step approach including an electrochemical anodization technique followed by an in situ photo-assisted dipping and deposition approach. Ag/AgBr nanoparticles with good dispersion were effectively deposited on both the inside and outside of the TiO2 nanotubes. Surface photovoltage measurements and luminescence spectra demonstrated that the Ag/AgBr loading enhanced the visible spectral absorption of TiO2 nanotube arrays, as well as their separation efficiency of photoinduced electron-hole pairs, which may due to the nanojunction built between Ag/AgBr and TiO2 in this system. The photoelectrochemical investigations verified that the TiO2 nanotube/Ag-AgBr nanojunction showed enhanced photocurrent generation efficiency and had a more effective photoconversion efficiency of 0.71% than the aligned TiO2 nanotube arrays alone. The enhanced photoelectrochemical properties can be attributed to the extended absorption in the visible light region resulting from Ag/AgBr nanoparticles, and the effective separation of photogenerated carriers driven by the photoinduced potential difference generated at the TiO2/Ag-AgBr nanojunction interface. © 2011 The Royal Society of Chemistry. |
| first_indexed | 2025-11-14T09:11:44Z |
| format | Journal Article |
| id | curtin-20.500.11937-42399 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:11:44Z |
| publishDate | 2011 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-423992017-09-13T14:25:25Z TiO2 nanotube/Ag-AgBr three-component nanojunction for efficient photoconversion Hou, Y. Li, Xin Yong Zhao, Q. Quan, X. Chen, G. A TiO2 nanotube/Ag-AgBr three-component nanojunction with enhanced visible-light activity was synthesized by a two-step approach including an electrochemical anodization technique followed by an in situ photo-assisted dipping and deposition approach. Ag/AgBr nanoparticles with good dispersion were effectively deposited on both the inside and outside of the TiO2 nanotubes. Surface photovoltage measurements and luminescence spectra demonstrated that the Ag/AgBr loading enhanced the visible spectral absorption of TiO2 nanotube arrays, as well as their separation efficiency of photoinduced electron-hole pairs, which may due to the nanojunction built between Ag/AgBr and TiO2 in this system. The photoelectrochemical investigations verified that the TiO2 nanotube/Ag-AgBr nanojunction showed enhanced photocurrent generation efficiency and had a more effective photoconversion efficiency of 0.71% than the aligned TiO2 nanotube arrays alone. The enhanced photoelectrochemical properties can be attributed to the extended absorption in the visible light region resulting from Ag/AgBr nanoparticles, and the effective separation of photogenerated carriers driven by the photoinduced potential difference generated at the TiO2/Ag-AgBr nanojunction interface. © 2011 The Royal Society of Chemistry. 2011 Journal Article http://hdl.handle.net/20.500.11937/42399 10.1039/c1jm12788h restricted |
| spellingShingle | Hou, Y. Li, Xin Yong Zhao, Q. Quan, X. Chen, G. TiO2 nanotube/Ag-AgBr three-component nanojunction for efficient photoconversion |
| title | TiO2 nanotube/Ag-AgBr three-component nanojunction for efficient photoconversion |
| title_full | TiO2 nanotube/Ag-AgBr three-component nanojunction for efficient photoconversion |
| title_fullStr | TiO2 nanotube/Ag-AgBr three-component nanojunction for efficient photoconversion |
| title_full_unstemmed | TiO2 nanotube/Ag-AgBr three-component nanojunction for efficient photoconversion |
| title_short | TiO2 nanotube/Ag-AgBr three-component nanojunction for efficient photoconversion |
| title_sort | tio2 nanotube/ag-agbr three-component nanojunction for efficient photoconversion |
| url | http://hdl.handle.net/20.500.11937/42399 |