Preparation of TiO₂ (Au) Nanotubes by Hydrothermal Method for Photocatalytic Reduction of Cd²⁺ Ions

Abstract:

Highly dispersed TiO₂ nanotubes (TiO₂-NTs) were synthesized via the reaction of anatase TiO₂ powder with NaOH solution. Au nanoparticles of about 5 nm were deposited on the surface of TiO₂-NTs with hydrothermal reduction method. The prepared nanocomposites were well characterized with TEM and XRD. Their photocatalytic properties and reducing ability were investigated by UV-Vis absorption and photocatalytic reduction of Cd²⁺ ions with different amount of TiO₂-NTs and TiO₂-NTs (Au) varying from 0.1g to 0.001g. The results from absorption patterns and AAS showed that the absorption intensity of TiO₂-NTs (Au) was higher compared with that of TiO₂-NTs. Moreover, the concentration of remanent Cd²⁺ (0.48mg/L) using TiO₂-NTs (Au) was lower than that of Cd²⁺ (0.65mg/L) using TiO₂-NTs.

• Periodical: Key Engineering Materials (Volumes 609-610)
• Pages: 375-381
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.609-610.375
• Online since: April 2014
• Authors: Chun Xiao Feng, Guang Qing Xu*, Jun Lv, Zhi Xiang Zheng, Yu Cheng Wu
• Keywords: Au Deposition, Degradation of Cd²⁺, Photocatalytic Properties, TiO₂ Nanotubes (NTs)

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