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High Photocatalytic Activity of TiO2 Nanotube Arrays Fabricated on Ti Meshes for Hydrogen Evolution from Water
Last modified: 2014-09-29
Abstract
In the present work, the TiO2 nanotube arrays were fabricated on Ti meshes through anodization of Ti meshes (TAA). Then, TAA was decorated with Pt via electro-deposition. Meanwhile, the photocatalytic activity of the Pt-decorated TiO2 nanotube arrays which were fabricated on Ti meshes (Pt/TTA) for hydrogen evolution from water were explored using tri-ethanolamine as a sacrificial reagent. The results indicate that Pt/TTA exhibits fairly high photocatalytic activity in a continuous flow system. During 5 hours, a rate of H2 evolution of approximately 29 μmol·cm-2 was achieved. Compared with the TiO2 nanotube arrays were fabricated on Ti foils, the photocatalytic activity of the TiO2 nanotube arrays are enhanced by a factor of three when they are fabricated on Ti meshes. These results imply that Pt/TTA should be a low-cost, highly active photocatalyst for the photocatalytic H2 production, and provide us with new possibility for designing an efficient continuous flow system.
Keywords
TiO2 nanotube attays; Ti mesh; photocatalysis; hydrogen
References
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