Effect of Preparation on Microstructure of Ag-Loaded TiO₂ Nanotube Arrays

Abstract:

We have synthesyzed TiO₂ nanotubes by an anodization method. The cathode was titanium (Ti) sheets and anode was platinum (Pt). The electrolytes were mixtures of ethylene glycol (EG), ammonium fluoride (NH₄F) and deionized water (DI water). The anodizing voltage was set to 50 V and the process was carried out for 2 h. The titanium foils were anodized at room temperature. Then Ag nanoparticles were loaded in TiO₂ nanotube arrays by immersed in 50 ml solutions containing of AgNO₃ (1.0, 1.5 and 2.0 mM) for 24 h. The morphology, structure, and optical properties of the prepared nanotubes were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and and UV-vis spectroscopy (UV-vis) respectively. The structures of TiO₂ nanotubes obtained from the nanotube arrays were crystallized by annealing at 450 °C for 2 h before immersed in solution and immersed in solution before crystallized by annealing are similar. When the concentration of silver nitrate (AgNO₃) increases, the TiO₂ nanotube arrays cracked and are not well arranged.

• Periodical: Key Engineering Materials (Volume 748)
• Pages: 155-159
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.748.155
• Online since: August 2017
• Authors: Somkuan Photharin*, Udom Tipparach
• Keywords: Ag-Loaded, Anodization, Preparation Temperature, TiO₂ Nanotube Arrays

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