采用液相沉积法(LPD), 以阳极氧化铝(AAO)为模板, 原位合成高度有序的TiO2纳米管薄膜材料. 实验结果表明, 经过400℃热处理后, 制备的TiO2纳米管为锐钛矿相, 长度达5μm, 管外径为150nm左右, 管壁厚为25nm左右. 热处理后的TiO2薄膜具有良好的光催化降解甲基蓝的性能, 即经过120min卤灯照射后, 甲基蓝被完全降解.
The highly ordered aligned titania nanotubes thin films were successfully prepared by liquid phase deposition (LPD) method. Anodic aluminum oxide (AAO) used as starting material was immersed in an aqueous ammonium hexafluorotitanate ((NH4)2TiF6) solution. The results show that anatase titania can be obtained after the thin films are annealed at 400℃ for 4h. The outside diameter of the titania nanotube is about 150nm and the wall thickness of the nanotubes is approximately 25nm. Moreover, the thickness of titania nanotube array is about 5μm. The annealed TiO2 thin films have good photocatalytic activity on the degradation of methyl blue, i.e., methyl blue can be entirely degradated after 120nm mercury arc irradiation.
[1] Fujishima A, Honda K. Nature, 1972, 238 (5358): 37-38.
[2] Michael R Hoffmann, Scot T Martin, Wonyong Choi, et al. Chem. Rev., 1995, 95 (1): 69-96.
[3] Amy L Linsebigler, Guangquan Lu, John T Yates, et al. Chem. Rev., 1995, 95 (3): 735-758.
[4] O’Regan B, Gratzel M. Nature, 1991, (353): 737-740.
[5] Nagayama H, Honda H, Kawahara H. Electro-chem. Soc., 1988, 135 (8): 2013-2016.
[6] 王金淑, 邢朋飞, 李莉莉, 等. 北京工业大学学报, 2006, 32 (7): 633-637.
[7] 李洪义, 白新德, 凌云汉, 等. 稀有金属材料与工程, 2007, 36 (7): 1257-1259.
[8] Masuda H, Satoh M. J. Appl. Phys., 1996, 35 (1B): 126-129.
[9] Cepak V M, Martin C R. Chem. Mater., 1999, 11 (5): 1363-1367.
[10] Shinsuke Y, Tsuyoshi H, et al. J. Alloys Comp., 2004, 373 (1-2): 312-315.
[11] Hiroki I, Yuko T, et al. J. Mater. Chem., 1999, 9 (12): 2971-2972.
[12] 余萍, 陈善华. 广东微量元素科学, 2006, 13 (3): 12-16.
[13] 蒋武峰, 凌云汉, 白新德, 等. 稀有金属材料与工程, 2007, 36 (7): 1178-1180.
[14] Masuda Y, Saito N, et al. Science and Technology of Advanced Materials, 2003, 4 (5): 461-467.
[15] Zhang J, Yang C, et al. Materials Chemistry and Physics, 2004, 88 (2-3): 398-403.
[16] Cheng L F, Zhang X T, Liu B. Nanotechnology, 2005, 16: 1341-1345.
