TiO2/Graphite Oxide Composite as an Efficient Photocatalyst for Organic Dye Reduction

Rui Zhang; Yi He Zhang; Qi An; Yu Li; Ji Wu Shang; Bo Shen; Ying He

doi:10.4028/www.scientific.net/AMR.699.557

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The Development Situation of Material Based on Dental Implant
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Research on the Hysteresis of Ring-Like MR Isolator
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Removal of Organic Pollutants in Solution by Bamboo Charcoal
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TiO₂/Graphite Oxide Composite as an Efficient Photocatalyst for Organic Dye Reduction
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Effects of the Polypyrrole/Silica on the Output Force of Ionic Polymer-Metal Composite
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Hydration Process of Portland Cement Blended with Silica Fume
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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 699TiO2/Graphite Oxide Composite as an Efficient...

TiO₂/Graphite Oxide Composite as an Efficient Photocatalyst for Organic Dye Reduction

Abstract:

A sample method was developed to fabricate composite of TiO2 and graphite oxide by a liquid phase deposition method. (NH4)2TiF6 and H3BO3 were stirred in distilled deionized water to prepare TiO2 particles which were then in situ deposited on graphite oxide. The photograph of scanning electron microscope (SEM) shows that the TiO2 particles are compact and uniform on the surface of graphite oxide sheets. The composite exhibited efficient photocatalytic activity under the ultraviolet light in degrading organic dye of methylene blue. There are two steps in the dye reducing process: the first half hour of porous adsorption by graphite oxide, and the photocatalytic degradation by TiO2 particles. In this case, the methylene blue reduces sharply in the first half hour with the concentration from 10 mg L-1 to 5.8 mg/L. From then, the reduction rate comes down gradually with the concentration of 0.9 mg L-1 after 6 hours UV lighting. The synergism of TiO2 particles and graphite oxide increases the reduction of methylene blue and possesses composite of reutilization ability practically.