Preparation and Photocatalytic Activity of Nd³⁺and CTAB Co-Doped Nanometer TiO₂ Thin Films

Abstract:

Pure TiO₂, Nd³⁺doped TiO₂ and Nd ³⁺-CTAB co-doped TiO₂ nanometer thin films were prepared by the sol-gel technique with tetrabutyl titanate and neodymium nitrate as raw materials and surfactant cetyltrimethylammonium bromide (CTAB) as template. The films were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and UV-Visible absorbance spectroscopy (UV-Vis). The photocatalytic activity was evaluated by photocatalytic degradation of methyl orange. The results show that the all samples calcined at 500°C are all anatase, and there are slight red shifts of the Nd³⁺doped TiO₂ and Nd³⁺-CTAB co-doped TiO₂ films compared with pure TiO₂ films and the red shift of Nd ³⁺-CTAB co-doped TiO₂ is more obvious than that of Nd ³⁺ doped TiO₂, which is beneficial to improve the photocatalytic efficiency. The1.0% Nd³⁺-CTAB co-doped TiO₂ nanometer film calcined at 500°C had excellent photocatalytic efficiencies and the degradation rate of the film is more than 90% after 120 min.

• Periodical: Key Engineering Materials (Volumes 562-565)
• Pages: 858-863
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.562-565.858
• Online since: July 2013
• Authors: Lan Fang Yao, Xiong Tang, Xin Pei Yan, Lin Li
• Keywords: CTAB Co-Doped, Nd³⁺, Photocatalytic, Sol-Gel, TiO₂ Thin Films

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