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Hierarchical Structure Combining Reduced Graphene Oxide with Titanium Dioxide Nanoparticles on Titanium Dioxide Nanotube Array

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We present a fast and simple sol–gel method to fabricate a reduced graphene oxide-TiO2 nanoparticle hierarchical structure on the surface of TiO2 nanotube array. The hybrid has been carefully characterized by spectroscopic and photoelectrochemical techniques. The material not only reduced the combination of photogenerated electrons and holes, but also increased the number of surface active sites. As a result, both adsorptivity and photocatalytic performance of the catalyst were highly improved. The photocatalyst exhibited nearly 100% removal efficiency of typical herbicide 2,4-dichlorophenoxtacetic acid under simulated solar light irradiation with good stability and easy recovery.
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Keywords: HIERARCHICAL STRUCTURE; PHOTOCATALYST; REDUCED GRAPHENE OXIDE; TIO2

Document Type: Short Communication

Publication date: July 1, 2014

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  • Nanoscience and Nanotechnology Letters (NNL) is a multidisciplinary peer-reviewed journal consolidating nanoscale research activities in all disciplines of science, engineering and medicine into a single and unique reference source. NNL provides the means for scientists, engineers, medical experts and technocrats to publish original short research articles as communications/letters of important new scientific and technological findings, encompassing the fundamental and applied research in all disciplines of the physical sciences, engineering and medicine.
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