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采用浸渍法制备了Zn掺杂的TiO2纳米管,采用扫描电子显微镜(SEM)、X射线衍射图谱(XRD)和紫外-可见光谱(UV-Vis)等对TiO2纳米管薄膜的结构与性能进行了表征,研究了Zn2+浓度、浸渍时间、循环次数等因素对TiO2纳米管薄膜结构、形貌与光催化性能的影响。结果表明,TiO2纳米管薄膜的光吸收随着浸渍Zn(NO3)2溶液浓度的升高先增强后减弱,在溶液浓度为0.1 mol/L时制备的TiO2纳米管薄膜光吸收最好;其光催化活性随着浸渍Zn(NO3)2溶液浓度的升高而先升高后减小,浸渍Zn(NO3)2溶液浓度为0.1 mol/L时制备的TiO2纳米管薄膜光催化效果最好,在紫外光照射120 min时达到了91.5%。
The Zn-doped TiO2 nanotubes were prepared by impregnation method. The structure and properties of TiO2 nanotubes films were investigated by scanning electron microscopy (SEM), X-ray diffraction (XRD) and UV-Vis spectroscopy The effects of Zn2 + concentration, impregnation time and number of cycles on the structure, morphology and photocatalytic activity of TiO2 nanotubes films were investigated. The results showed that the light absorption of TiO2 nanotubes films first increased and then decreased with the increase of the concentration of Zn (NO3) 2 solution, and the light absorption of TiO2 nanotubes films prepared at the concentration of 0.1 mol / L was the best. The photocatalytic activity of TiO2 nanotubes films prepared by immersing Zn (NO3) 2 solution at a concentration of 0.1 mol / L was the best, It reaches 91.5% when irradiated with ultraviolet light for 120 min.