Facile fabrication of well-dispersed silver nanoparticles loading on TiO₂ nanotube arrays by electrodeposition

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• 作者：Xu Liu ; Zhongqing Liu ^{lzq_301@126.com} ; Shixiong Hao ; Wei Chu ; ^{chuwei1965_scu@yahoo.com}
• 关键词：TiO2 nanotube arrays ; Photocatalysis ; Well-dispersed ; Nanoparticles ; Electrodeposition
• 刊名：Materials Letters
• 出版年：2012
• 期刊代码：59_0167577x
• 类别：ms
• 出版时间：1 August, 2012
• 卷：80
• 期：Complete
• 页码：66-68
• 文件大小：694 K

摘要

A facile electrodeposition route was adopted to construct well-dispersed silver nanoparticles on TiO₂ nanotube arrays which were prepared by anodization method. The morphologies and composition of silver nanoparticles loading on TiO₂ nanotube arrays were characterized using field-emission scanning electron microscope (FE-SEM), transmission electron microscope (TEM) and X-ray photoelectron spectroscopy (XPS). Methyl orange (MO) solution was utilized as the degradation model to evaluate the photocatalytic activity of the samples under ultraviolet (UV) light irradiation. The results suggested that the metallic Ag particles with uniform size of ~ 5 nm were deposited on the whole tube wall and TiO₂ nanotube arrays loaded Ag nanoparticles presented higher photocatalytic activities of 2.5-fold enhancement than pure TiO₂ nanotube arrays under UV light irradiation. This approach can provide a convenient route to synthesize various TiO₂ nanotube array materials which are loaded by metal particulates with quantum size.