【作者】 黄秀秀；

【导师】 章文贡；

【作者基本信息】 福建师范大学 ， 高分子化学与物理， 2008， 硕士

【摘要】 在本研究中,首先采用脉冲激光轰击法（PLA）连续制备了纳米TiO₂乙醇溶胶,通过TEM、UV-Vis和荧光光谱考察了流动相及其流速、脉冲激光输出功率以及溶胶放置时间等因素对所获纳米TiO₂溶胶荧光性能的影响;其次,通过制备不同金属氧化物掺杂的锐钛矿型TiO₂固体靶,采用PLA法连续制备得到一系列不同金属氧化物掺杂的纳米TiO₂乙醇溶胶,并通过UV-Vis、荧光光谱以及XRD等考察了不同的金属氧化物、掺杂量以及掺杂方法对溶胶荧光特性的影响;再者,采用PLA法制备了纳米TiO₂掺杂的两种金属氧化物混合有机溶胶,并通过UV-Vis以及荧光光谱考察了纳米TiO₂乙醇溶胶的掺杂对纳米Eu₂O₃、ZnO、Tb₂O₃、Al₂O₃有机溶胶荧光性能的影响;最后,采用PLA法连续制备纳米TiO₂/聚苯乙烯溶胶,通过滴涂成膜,采用TEM、FT-IR以及XRD等对薄膜的相关特性进行了表征,同时采用包络法计算薄膜的折射率,并考察了折射率与薄膜厚度、波长以及采用不同晶型TiO₂掺杂的关系。PLA法为制备高荧光性纳米TiO₂溶胶以及高折射率纳米TiO₂/PS薄膜探索出了一条新途径。更多还原

【Abstract】 Firstly,Nano TiO₂ colloids were successively prepared by focused,pulsed laser ablation（PLA）.The TEM、UV-Vis and fluorescence spectroscopy were used to study on the effect of factors as the flowing rates of the flowing liquid,the pulsed laser output power,the age of the colloids,on the luminescence of the nano TiO₂ colloids.Secondly, PLA was used to prepare a series of new-type TiO₂ nano-ethanol colloids doped with different metal oxides,the UV-Vis,XRD and fluorescence spectroscopy were used to study on the effect of factors as different metal oxides,the dopant content,different doping methods,on the fluorescence properties of the nano TiO₂ ethanol colloids.Thirdly, PLA was used to prepare two kinds of metal oxides mixing organic colloids doped nano TiO₂,the effects of the dopant of nano TiO₂ colloids on the luminescence of nano Eu₂O₃、ZnO、Tb₂O₃、Al₂O₃ rganic colloids were studied by the method of the UV-Vis and fluorescence spectroscopy.Finally,PLA was used to prepare nano TiO₂/PS colloids,then the colloids were made to thin films,the characteristic of the films were studied by the method of TEM、FT-IR and XRD.The method of UV-Vis enveloping was used to calculate the refractive index of the films,the relationship between the refractive index and the thickness,wavelength and the dopant of different crystal types.PLA was used to explore a new way to prepare nano TiO₂ colloids with strong fluorescence emission and nano TiO₂/PS films of high refractive index.更多还原