Tan Bing, Wu Yiying. Dye-sensitized solar cells based on anatase TiO2 nanoparticle/nanowire composites [J]. J. Phys. Chem. B, 2006, 110(32):15932-15938.[2] Wang Jun, Zhiqun Lin. Dye-sensitized TiO2 nanotube solar cells with markedly enhanced performance via rational surface engineering [J]. Chem. Mater., 2010, 22(2):579-584.[3] Mor G K, Shankar K, Paulose M, et al. Use of highly-ordered TiO2 nanotube arrays in dye-sensitized solar cells [J]. Nano Lett., 2006, 6(2):215-218.[4] Peng T Y, Hasegawa A, Qiu J R, et al. Fabrication of titania tubules with high surface area and well-developed mesostructural walls by surfactant-mediated templating method [J]. Chem. Mater., 2003, 15(10):2011-2016.[5] Zhang Anbang, Ma Xiangyang, Jin Lu, et al. Electroluminescence of heterostructures formed by p+-Si and TiO2 films derived from oxidation of sputtered Ti films [J]. Chin. J. Lumin. (发光学报), 2011, 32(5):471-475 (in Chinese).[6] Zeng Qingguang, Le Tian, Zou Huayong, et al. Temperature effect on the structure and optical properties of Eu/TiO2 nanomaterials [J]. Chin J. Lumin.(发光学报), 2011, 32(4):358-362 (in Chinese).[7] Yin H, Liu H, Shen W Z. The large diameter and fast growth of self-organized TiO2 nanotube arrays achieved via electrochemical anodization [J]. Nanotechnology, 2010, 21(3):035601-1-7.[8] Wang Daoai, Liu Ying, Yu Bo, et al. TiO2 nanotubes with tunable morphology, diameter, and length: Synthesis and photo-electrical/catalytic performance [J]. Chem. Mater., 2009, 21(7):1198-1206.[9] Park J, Bauer S, Von der Mark K, et al. Nanosize and vitality: TiO2 nanotube diameter directs cell fate [J]. Nano Lett., 2007, 7(6):1686-1691.[10] Li Shiqi, Zhang Gengmin, Guo Dengzhu, et al. Anodization fabrication of highly ordered TiO2 nanotubes [J]. J. Phys. Chem. C, 2009, 113(29):12759-12765.[11] Mohapatra S K, Misra M, Mahajan V K, et al. Synthesis of Y-branched TiO2 nanotubes [J]. Materials Lett., 2008, 62(12-13):1772-1774.[12] Pang Xuelai, Shi Hong, Tang Xinde, et al. A coaxial heterogeneity of cerium dioxide nanotubes-titania nanotubes array films, China: CN 201110002998.5 . 2011-01-07.[13] Zhang Jingwen, Liu Zhenling, Hou Xun. Effect of Pretreatment Process on Fabrication of Anodic Nanoporous Alumina . Xi'an: Xi'an Jiaotong University, 2006.[14] Chen Bensong, Xu Qiaoling, Zhao Xianglong, et al. Branched silicon nanotubes and metal nanowires via AAO-template-assistant approach [J]. Adv. Funct. Mater., 2010, 20(21):3791-3796.[15] Meng Guowen, Han Fangming, Zhao Xianglong, et al. A general synthetic approach to interconnected nanowire/nanotube and nanotube/nanowire/nanotube heterojunctions with branched topology [J]. Angew. Chem. Int. Ed., 2009, 48(39):7166-7170.[16] Chen Shuoshuo, Ling Zhiyuan, Hu Xing, et al. Controlled growth of branched channels by a factor of 1/ n anodizing voltage [J]. J. Mater. Chem., 2009, 19(32):5717-5719.[17] Chen Shuoshuo, Ling Zhiyuan, Hu Xing, et al. Competitive growth of branched channels inside AAO membranes [J]. J. Mater. Chem., 2010, 20(9):1794-1798.[18] Cai Fanggong, Yang Feng, Zhao Yong, et al. Preparation of TiO2 nanotube and nanotube/nanowire composite arrays by temperature control [J]. Chin. J. Inor. Chem.(无机化学学报), 2011, 27(3):504-508 (in Chinese).