Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 481, Issue 1-2, Pages 492-497Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2009.03.021
Keywords
ZnO/titanate nanocomposite; Hydrothermal method; Photocatalytic activity; Rhodamine B; Visible light
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Funding
- NSFC [20773132, 20771101]
- National Basic Research Program of China [2007CB613301]
- Directional program of CAS [KJCXZ-YW-M10]
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Nanocomposites consisted of zinc oxide (ZnO) nanoparticles and titanate nanotubes were prepared via a solution chemistry method. As characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), infrared and UV-vis absorption spectroscopy, and Barrett-Emmett-Teller (BET) techniques, ZnO nanoparticles in a hexagonal wurtzite phase were attached to the surfaces of titanate nanotubes to form the nanocomposites. Using photodegradation of rhodamine B (RhB) as the model reaction, the nanocomposites were found to show a surprisingly high photocatalytic activity under visible light irradiation, which is superior over that of the component ZnO nanoparticles or titanate nanotubes. The relevant photocatalytic mechanism was discussed and interpreted. (C) 2009 Elsevier B.V. All rights reserved.
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