Abstract
Herein we report a room-temperature synthesis of chemically bonded TiO2 (P25)-graphene composite hydrogels and their use as high performance visible light photocatalysts. The three-dimensional (3D) TiO2-carbon composite exhibits a significant enhancement in the reaction rate in the decontamination of methylene blue, compared to the bare P25. The 3D P25-graphene hydrogel is much easier to prepare and apply as a macroscopic device, compared to the 2D P25-graphene sheets. This work could provide new insights into the room-temperature synthesis of graphene-based materials. As a kind of the novel 3D graphene-based composite, the obtained high performance P25-graphene gel could be widely used in the environmental protection issues.
Copyright © 2012. Published by Elsevier B.V.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Catalysis
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Coloring Agents / chemistry
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Coloring Agents / radiation effects
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Environmental Restoration and Remediation / methods*
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Graphite / chemistry*
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Hydrogels / chemical synthesis*
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Light
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Methylene Blue / chemistry
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Methylene Blue / radiation effects
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Microscopy, Electron, Scanning
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Nanotubes, Carbon / chemistry
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Nanotubes, Carbon / ultrastructure
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Photolysis
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Solutions
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Spectroscopy, Fourier Transform Infrared
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Temperature
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Titanium / chemistry*
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Water Pollutants, Chemical / chemistry*
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Water Pollutants, Chemical / radiation effects
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Water Purification / methods
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X-Ray Diffraction
Substances
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Coloring Agents
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Hydrogels
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Nanotubes, Carbon
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Solutions
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Water Pollutants, Chemical
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titanium dioxide
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Graphite
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Titanium
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Methylene Blue