Journal
MATERIALS CHEMISTRY AND PHYSICS
Volume 143, Issue 3, Pages 1410-1416Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2013.11.055
Keywords
Nanostructures; Chemical synthesis; Electron microscopy; Oxidation
Categories
Funding
- National Natural Science Foundation of China [51302101, 21303129, 11004071]
- Key Foundation of Educational Commission of Anhui Province [KJ2012A250]
- Natural Science Foundation of Anhui Province [11040606M10, 11040606M64]
- Huaibei Science and Technology Development Funds [20110305]
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In this work, graphene oxide/zinc oxide (GO/ZnO) hybrid was prepared through a facile hydrothermal process. Transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectra and N-2 adsorption and desorption isotherms were used to investigate the morphology, crystal structure, optical properties and specific surface area of GO/ZnO hybrid. It was shown that the well-dispersed ZnO nanorods were deposited on GO homogeneously. Photocatalytic properties of GO/ZnO nanorods hybrid were evaluated under 375 nm light-emitting diode light irradiation for photodegradation of methylene blue (MB). The synergic effect between GO and ZnO was found to lead to an improved photo-generated carrier separation. An optimal GO content has been determined to be 3 wt%, and corresponding the apparent pseudo-first-order rate constant k(app) is 0.0248 min(-1), 43 times and 2.5 times more than that of pure ZnO nanorods and commercial P25 photocatalyst, respectively. Moreover, the cyclic photocatalytic test indicated that GO/ZnO hybrid can be reused for degradation of MB, suggesting the possible application of GO/ZnO hybrid as excellent candidate for water treatment. (C) 2013 Elsevier B.V. All rights reserved.
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