Journal
APPLIED SURFACE SCIENCE
Volume 359, Issue -, Pages 868-874Publisher
ELSEVIER
DOI: 10.1016/j.apsusc.2015.10.199
Keywords
Exfoliated graphite oxide; Photocatalysis; TiO2; Composite; Methylene blue
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Funding
- CAPES Comissao de Aperfeicoamento de Pessoal de Nivel Superior
- CNPq Conselho Nacional de Desenvolvimento Cientifico e Tecnologico
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A simple and effective stepwise-method was developed to produce expanded exfoliated graphite oxide (EGO). Using a combination of ozone exposure and thermal treatment we demonstrate that a graphite surface can be modified to generate a graphene-like surface containing oxygen and sp3 carbon. This expanded exfoliated graphite oxide is useful for the production, through thermal treatment, of photocatalytic TiO2-EGO composites which are more active than those produce by the Hummers method. The photocatalytic activity of TiO2-EGO in methylene blue (MB) bleaching under UV light is enhanced in comparison with TiO2 P25. (C) 2015 Elsevier B.V. All rights reserved.
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