【作者】 袁永；

【导师】 叶长江；

【作者基本信息】 暨南大学 ， 凝聚态物理， 2005， 硕士

【摘要】 本文利用电弧离子镀成功制备TiO₂纳米薄膜材料,并对其相关特性进行了研究。 通过原子力显微镜（AFM）和X射线衍射仪（XRD）检测TiO₂薄膜表面形貌的分布、大小、形状及晶体结构等,讨论退火对薄膜晶体结构,晶粒大小、平整度等影响。激光拉曼光谱仪（Raman）的检测结果进一步表明未经退火处理时薄膜为非晶态晶体结构,经过500℃退火转变为锐钛矿结构。采用紫外—可见分光光度计（UV—Vis）分析TiO₂薄膜的禁带宽度,研究退火处理对薄膜吸收边的影响,及对薄膜紫外—可见光的吸收能力的影响。 研究TiO₂薄膜表面的光催化性能,其中包括结合4—氨基安替比林直接光度法测量TiO₂薄膜在紫外线照射下对苯酚的降解效率;及采用定波长的方法,直接测定TiO₂薄膜对罗丹明、甲基橙、亚甲基蓝等一些染料的降解效率。 采用定量液滴近似计算的方法研究TiO₂薄膜在紫外光照射下表现的超亲水性能,讨论退火温度对亲水性的影响、及紫外线照射下TiO₂薄膜的亲水性能。 实验结果表明,电弧离子镀能够成功制备透明均匀的纳米TiO₂薄膜。同时证明锐钛矿结构的TiO₂薄膜比非晶态的薄膜有更好的光催化性能、亲水性能、紫外—可见吸收能力。更多还原

【Abstract】 In this paper, TiO₂ thin films were successfully prepared on microscope slides by arc ion plating technique.The microstructure, surface morphology and UV-visible absorption spectrum of the films were investigated by AFM, XRD, Raman spectroscopy and UV-1800 spectrophotometer, thus analyzing the effect of the annealing treatment on the microstructure, the crystal size, the flatness and the absorption coefficient of TiO₂ film.The TiO₂ thin films showed good photocatalytic activity for decomposing of Phenol, Methyl Orange, Rhodamine, and Methylene Blue. The photodegradation of organic compounds was more prominent with the anatase TiO₂ film annealed at 500℃ than the amorphous TiO₂ film. Hydrophilic experiments by using fixed quantify water-analyzing method showed the nanometer anatase TiO₂ film with high hydrophilicity.The experimental results showed that the TiO₂ films prepared by ion plating technique were compact, uniform and transparent. The anatase structure TiO₂ films after annealing at 500℃ for two hours have higher activity than the amorphous films without annealing.更多还原