Preparation and photocatalytic activity of TiO2-exfoliated graphite oxide composite using an ecofriendly graphite oxidation method

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 graphitesurface can be modified to generate a graphene-like surface containing oxygen and sp3 carbon. Thisexpande...

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Bibliographic Details
Main Author: Vanessa Zanon Baldissarelli (author)
Other Authors: Thiago de Souza (author), Luísa Andrade (author), Luiz Fernando Cappa de Oliveira (author), Humberto Jorge José (author), Regina de Fátima Peralta Muniz Moreira (author)
Format: article
Language:eng
Published: 2015
Subjects:
Engenharia química, Engenharia química
Chemical engineering, Chemical engineering
Online Access:https://hdl.handle.net/10216/103544
Country:Portugal
Oai:oai:repositorio-aberto.up.pt:10216/103544
Description
Summary: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 graphitesurface can be modified to generate a graphene-like surface containing oxygen and sp3 carbon. Thisexpanded 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. Thephotocatalytic activity of TiO2-EGO in methylene blue (MB) bleaching under UV light is enhanced incomparison with TiO2 P25.

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