第8卷第2期 2011年4月 纳米科技 Nanoscience&Nanotechnology No.2 April 2011
阳极氧化TiO2纳米管阵列的制备及其光
电化学特性研究 :l=
刘世凯 一,杨海滨 ,李伊荇 ,付乌有
(1.河南工业大学材料科学与工程学院,河南郑州450001) (2.吉林大学超硬材料国家重点实验室,吉林长春130012)
摘要:采用简单的电化学阳极氧化法在金属Ti表面制备了TiO:纳米管阵列薄膜,研究薄膜的
表面形貌、晶相结构以及光吸收性质,考察其光电极的光电化学特性,结果表明,所制备的纳
米管阵列膜结构高度有序,平均管径约90nm,管长约700nm。经过不同温度热处理后,薄膜结
晶性质的重要性得到证实,600 ̄(2处理的光电极具有最优的光吸收和光电化学性质,最高光转化
效率约1.07%。 关键词:二氧化钛;纳米管阵列;阳极氧化;光电化学
Self-organized Anodic TiO2 Nanotube Arrays:Fabrication and
Photoelectrochemical Properties
LIU Shi—kai ,YANG Hai—bin ,LI Yi—xing2,FU Wu—you
(1.School of Materials Science and Engineering,Henan University of Technology, Zhengzhou 45000 1,China)
(2.State Key Laboratory of Superhard Materials,Jilin University,Changchun 130012,China)
Abstract:Self-organized nanotube arrays were prepared by a facile electrochemical anodization on pure Ti in a O.5wt% NH4F aqueous electrolyte.The snIfaee morphology, structure, optical and photoelectrochemica1 behaviors of the nanotubular films were investigated.The as-formed nanotubes are highly ordered with-700nm in length and the average tube diameter of about 90nm.By annealing the initially amorphous films at different temperatures,the importance of the crystalline nature is confirmed.The photoelectrochemical properties are investigated and the highest photoconversion efficiency of 1.07%is obtained with the annealing at 600。C. Keywords:titanium dioxide;nanotube arrays;anodization;photoelectrochemistry