TiO2纳米管阵列薄膜的热稳定性  

Thermal stability of TiO_2 nanotube array films

作　　者：蒋武锋[1] 郝素菊[1] 苍大强[2] 凌云汉[3] 白新德[3] 

机构地区：[1]河北理工大学冶金与能源学院,唐山063009 [2]北京科技大学冶金与生态学院,北京100083 [3]清华大学材料科学与工程系,北京100084

出　　处：《北京科技大学学报》2008年第2期144-147,共4页Journal of University of Science and Technology Beijing

基　　金：国家自然科学基金资助项目(No50371044)

摘　　要：采用液相沉积法在Al板上制备了TiO2纳米管阵列薄膜,并在不同温度下进行了热处理.用场发射扫描电子显微镜(FE-SEM)、透射电子显微镜(TEM)、X射线衍射(XRD)等手段对样品进行了表征.结果表明:未经过热处理的TiO2薄膜的晶体结构是非晶态的;在400℃的空气中焙烧2h,薄膜出现锐钛矿相;650℃空气中焙烧2h后,薄膜仍然保持着良好的管状结构.薄膜中Al2O3的存在,抑制了TiO2晶粒的长大,提高了薄膜的热稳定性.Titanium dioxide nanotube array films on A1 plates were prepared by liquid phase deposition （LPD） method. The sampies were annealed at various temperatures. The phase and microstructure of the nanotube array films were characterized by field-emission scanning electron microscopy （FE-SEM）, transmission electron microscopy （TEM） and X-ray diffraction （XRD）. It is found that the phase of as-deposited TiO2 array film without heat treatment is amorphous, but there is anatase in the film after heattreating at 400℃ for 2 h. The structure of TiO2 array film after annealed at 650℃ for 2 h in air is still stable, The presence of alumina promotes the thermal stability of TiO2 nanotube array films and suppresses the growth of crystal grains and primary particles.

关 键 词：二氧化钛 纳米管阵列薄膜 热稳定性 液相沉积 

分 类 号：TB383[一般工业技术—材料科学与工程] TQ134.11[化学工程—无机化工]