RESEARCH ARTICLE
Efficient synthesis of titania nanotubes and enhanced photoresponse of Pt decorated TiO
1. School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China; 2. School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China
发布日期：
2009-09-05
摘要
We investigated the effect of HMT (hexamethylenetetraamine) on the anodic growth of TiO nanotube arrays. The tube length increases to 4.3 μm with HMT concentration increasing to 0.04 mol·L . Adsorption of HMT on the TiO surface is shown to markedly decrease the chemical dissolution rate of tube mouth, resulting in longer nanotube length. Furthermore, Pt nanoparticles were successfully deposited on the surface of TiO nanotubes by ac electrodeposition method. The TiO /Pt composites were characterized by field emission scanning electron microscope (FESEM), X-ray photoelectron spectra (XPS), and photoelectrochemistry. An enhancement in photocurrent density has been achieved upon modification of TiO nanotubes with Pt nanoparticles.
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