Journal
CERAMICS INTERNATIONAL
Volume 40, Issue 2, Pages 3647-3654Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2013.09.060
Keywords
ZnO; Graphene-ZnO; Photocatalyst; Methylene Blue
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Funding
- Converging Research Center Program through the Ministry of Education, Science and Technology [2013K000186, B551179-08-03-00]
- Center for Inorganic Photovoltaic Materials [2012-0001169]
- Korea government (MSIP)
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Graphene-ZnO (G-ZnO) composite thin films were produced using the electrostatic spray deposition technique (ESD). The effects of the concentration of graphene and annealing temperature on the structural and photocatalytic properties of the G-ZnO films were studied by X-ray diffraction, scanning electron microscopy, atomic force microscopy, Raman spectroscopy, and UV-visible spectroscopy. We demonstrated that the G-ZnO films exhibit enhanced activities towards the photodegradation of methylene blue dye. A G-ZnO film with 0.1 wt% graphene that was annealed at 300 degrees C showed the highest photo-degradation activity. We found that the incorporation of graphene reduced electron-hole recombination in the ZnO film (C) 2013 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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