| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Preparation and Photocurrent Performance of Highly Ordered Titania Nanotube Implanted with Ag/Cu Metal Ions |
LIAO Bin, WU Xian-Ying, LIANG Hong, ZHANG Xu, LIU An-Dong |
| Key Laboratory for Radiation Beam Technology and Material Modification of Ministry of Education, Institute of Low Energy Nuclear Physics, Beijing Radiation Center, Beijing Normal University, Beijing 100875 |
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| Cite this article: |
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LIAO Bin, WU Xian-Ying, LIANG Hong et al 2010 Chin. Phys. Lett. 27 077103 |
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Abstract Ag/Cu-doped titania nanotubes (Ag/TiNT, Cu/TiNT) are prepared by a metal vapor vacuum arc implanter. A scanning electronic microscope is employed for microstructural characterization. The photo-current performance of doped titania nanotubes under UV and visible light is tested by an electrochemical workstation CS300UA, the results show that the absorption edge of both Ag/TiNT and Cu/TiNT samples shifts to the visible light region and the band gap becomes narrower. Ag/TiNT possesses better photo-current ability than Cu/TiNT under UV and visible light. Titania doped with Ag and Cu metal ions is also studied based on the linearized augmented plane-wave method implemented by WIEN2k package, the result becomes better with the experimental performance.
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| Keywords:
71.15.Mb
73.63.Fg
81.05.Je
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Received: 16 May 2010
Published: 28 June 2010
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| PACS: |
71.15.Mb
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(Density functional theory, local density approximation, gradient and other corrections)
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73.63.Fg
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(Nanotubes)
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81.05.Je
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(Ceramics and refractories (including borides, carbides, hydrides, nitrides, oxides, and silicides))
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