Y-branched TiO_2 nanotube arrays synthesized by anodic oxidation  

作　　者：YANG Xu Qu Yi FAN Yi LIU XingYuan 

机构地区：[1]National Key Lab of High Power Semiconductor Lasers, Changchun University of Science and Technology, Changchun 130022, China [2]Key Laboratory of Excited State Processes, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China

出　　处：《Science China(Physics,Mechanics & Astronomy)》2012年第1期14-18,共5页中国科学：物理学、力学、天文学（英文版）

摘　　要：We report a novel synthesis strategy for Y-branched TiOe nanotubes on a pure titanium foil by electrochemical anodic oxida- tion in an NH4F organic electrolyte. Effects of temperature range, oxidation time, and morphology-dependent parameters of the Y-branched TiO2 nanotube arrays were investigated. We found that an optimized growth-temperature window between 20℃ and 30℃ resulted in Y-branched nanotubes with much better morphology and photoelectric performances. After annealing at 450℃ for 1.5 h in air, a dominant crystal structure of these arrays was indexed to anatase.We report a novel synthesis strategy for Y-branched TiO2 nanotubes on a pure titanium foil by electrochemical anodic oxidation in an NH4F organic electrolyte. Effects of temperature range, oxidation time, and morphology-dependent parameters of the Y-branched TiO2 nanotube arrays were investigated. We found that an optimized growth-temperature window between 20°C and 30°C resulted in Y-branched nanotubes with much better morphology and photoelectric performances. After annealing at 450°C for 1.5 h in air, a dominant crystal structure of these arrays was indexed to anatase.

关 键 词：Y-branched TiO2 nanotube anodization oxidation temperature ANATASE 

分 类 号：O643.36[理学—物理化学] TB383[理学—化学]