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Au-TiO2 Yolk-Shell Particles for Photocatalysis Application
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Bin Dai
Published/Copyright:
July 25, 2012
Abstract
Au-TiO2 yolk-shell particles with gold as core and mesoporous TiO2 as shell have been synthesized by deposition of TiO2 nanoparticles onto Au-silica core-shell particles via modified sol-gel method at room temperature followed by the removal of silica midlayer by NaOH treatment. The Au-TiO2 yolk-shell particles exhibit a high colloidal stability, which can be applied as excellent heterogeneous photocatalysts for the photodegradation of the dye Rhodamine B under UV irradiation. The Au-TiO2 yolk-shell particles have shown much higher photocatalytic activity than that of the hollow TiO2 particles without gold.
Published Online: 2012-7-25
Published in Print: 2012-8-1
© by Oldenbourg Wissenschaftsverlag, München, Germany
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