以Ti （OC₄H₉）₄为钛源，盐酸和蒸馏水为溶剂，改变水热温度、Ti （OC₄H₉）₄浓度，采用水热法在掺F-SnO₂玻璃基板上制备TiO₂纳米棒薄膜。通过X射线衍射仪（XRD）、扫描电子显微镜（SEM）、紫外-可见分光光度计（UV-Vis）对样品的晶型结构、微观形貌和光吸收强度等进行表征。结果表明，制得的TiO₂薄膜由均匀排列的金红石相一维纳米棒阵列组成。温度的升高有利于TiO₂纳米棒的生长，160℃时TiO₂薄膜纳米棒之间空隙适中，具有较好的均一性和分散性。Ti （OC₄H₉）₄浓度为0.05 mol/L时，纳米棒直径大，有高的结构密度、适宜的孔隙率，垂直生长性好，薄膜与衬底接触良好，样品在紫外光区和可见光区都有良好的光吸收性；Ti （OC₄H₉）₄浓度为0.03 mol/L时，禁带宽度最小为2.78 eV。

Using tetrabutyl titanate as titanium source,hydrochloric acid and distilled water as solvents,TiO₂ nanorod film is grown on F-SnO₂ doped glass substrate by hydrothermal method through controlling reaction temperature and Ti(OC₄H₉)₄ concentration.The crystal structure,microstructure and light absorption strength of the samples are analyzed and characterized via X-ray diffraction (XRD) and scanning electron microscopy (SEM),respectively.The optical properties of the samples are measured by ultraviolet visible spectrophotometer (UV-Vis).The results show that the prepared TiO₂ film consists of uniformly arranged rutile one-dimension nanorods arrays.The increase of temperature is beneficial to the growth of TiO₂ nanorods.At 160℃,the gap between TiO₂ film nanorods is moderate and the film has a good homogeneity and dispersion property.When the concentration of Ti(OC₄H₉)₄ is 0.05 mol·L^-1,the nanorods prepared have larger diameter,high structural density,moderate porosity,good vertical growth ability,and good contact performance with substrate.The samples exhibit good optical absorption performance both in the ultraviolet and visible regions.The minimum band gap is 2.78 eV when the concentration of Ti(OC₄H₉)₄ is 0.03 mol·L^-1.

薛丹林(1992-),女,硕士研究生,主要从事纳米材料的研究,1072348224@qq.com