Abstract TiO 2 nanotube arrays doped by Sn up to 12 at% have been prepared using template-based liquid phase deposition method. Their morphologies, structures and optical properties have been investigated by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, UV–vis absorption spectroscopy and photoluminescence spectroscopy. The photocatalytic properties of the samples were evaluated with the degradation of methylene blue under UV irradiation. The result shows that doping an appropriate amount of Sn can effectively improve the photocatalytic activity of TiO 2 nanotube arrays, and the optimum dopant amount is found to be 5.6 at% in our experiments.

中文翻译：

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Sn掺杂TiO2纳米管阵列的合成及光催化性能

摘要 使用基于模板的液相沉积方法制备了掺杂高达 12 at% Sn 的 TiO 2 纳米管阵列。通过扫描电子显微镜、透射电子显微镜、X 射线衍射、紫外-可见吸收光谱和光致发光光谱研究了它们的形貌、结构和光学性质。样品的光催化性能通过紫外线照射下亚甲蓝的降解来评估。结果表明，掺杂适量的Sn可有效提高TiO 2 纳米管阵列的光催化活性，实验发现最佳掺杂量为5.6 at%。