Silver-modified TiO₂ nanorods with enhanced photocatalytic activity in visible light region

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• 作者：Hui Liu ; Xiaonan Dong ; Congyue Duan ; Xing Su ; Zhenfeng Zhu
• 关键词：SMTN ; SPR ; Photocatalytic activity
• 刊名：Ceramics International
• 出版年：2013
• 出版时间：December, 2013
• 年：2013
• 卷：39
• 期：8
• 页码：8789-8795
• 全文大小：2729 K

文摘

Silver-modified TiO₂ nanorods (SMTN) have been synthesized via controlled hydrolysis of tetrabutyltitanate (TBOT) in ethanol and immersion method by using AgNO₃ as an Ag source. The physical and chemical properties of SMTN were studied by XRD, SEM, TEM, and UV-vis diffuse reflectance spectra (DRS). The photocatalytic activity of the as-prepared products was evaluated by photocatalytic decolorization of Rhodamine B (Rh B) aqueous solution at ambient temperature under visible light irradiation. The experimental results reveal that the TiO₂ nanorods, which are well dispersed and uniform, attached large numbers of silver nanoparticles on the surface, and the major crystalline phase of TiO₂ is anatase. The photocatalytic activity research shows that the SMTN exhibit an enhanced photocatalytic activity in visible light region compared with that of pure TiO₂ nanorods and commercial TiO₂ (P25).