Template synthesis and luminescence properties of TiO₂:Eu³⁺ nanotubes

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• 作者：Huan Zhao ; Keyan Zheng ; Ye Sheng ; Hongbo Li ; Hongguang Zhang ; Xiaofei Qi ; Zhan Shi ; Haifeng Zou
• 关键词：TiO2 ; Eu3+ doped nanotubes ; Carbon nanotubes ; Luminescence
• 刊名：Journal of Solid State Chemistry
• 出版年：February, 2014
• 年：2014
• 卷：210
• 期：1
• 页码：138-143
• 全文大小：1638 K

文摘

Uniform TiO₂:Eu³⁺ nanotubes have been successfully synthesized through a simple solvothermal process with carbon nanotubes (CNTs) as templates, free of any surfactant or catalyst. X-ray diffraction (XRD) results demonstrate that the product is a pure anatase phase of TiO₂. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) images indicate that the as-obtained TiO₂:Eu³⁺ nanotubes are uniform in size and distribution, and the thickness of the wall is about 8 nm. The possible formation mechanism has also been proposed. The luminescent spectrum shows that TiO₂:Eu³⁺ nanotubes exhibit a red emission at 612 nm due to the ⁵D₀鈫?sup>7F₂ transition. Furthermore, this synthetic route is promising for the preparation of other one-dimensional inorganic nanomaterials because of its simplicity and the low cost of the starting reagents.