TiO_2一维纳米材料及其纳米结构的合成  

Synthesis of One-Dimensional TiO_2 Nanomaterials and Their Nanostructures

作　　者：张毓芳[1] 张正国[1] 方晓明[1] 

机构地区：[1]华南理工大学化工与能源学院传热强化与过程节能教育部重点实验室,广州510641

出　　处：《化学进展》2007年第4期494-501,共8页Progress in Chemistry

基　　金：国家自然科学基金项目(No.20573038)资助

摘　　要：本文对合成TiO2一维纳米材料及其有序纳米阵列的阳极氧化法、模板法以及水热法进行了全面而系统的评述,着重介绍了它们的最新研究进展。阳极氧化法能制备牢固负载于基体上的TiO2纳米管阵列,这有助于构筑TiO2纳米结构及其在纳米器件上的应用;与多种制备技术如溶胶-凝胶工艺、电化学沉积以及原子层沉积等相结合,模板法可以合成出多种形貌的TiO2纳米材料如纳米管、纳米线和纳米棒,并且可以通过改变所用模板的微观尺寸来调控TiO2一维纳米材料及其有序阵列的微结构参数;水热合成法可以制备出直径小且比表面积大的TiO2纳米管粉末。从目前来看,该法还不能制备出牢固负载于基体上的有序纳米阵列。文章最后指出了TiO2一维纳米材料及其有序纳米阵列合成中存在的问题及今后发展方向。The methods including anodization process, templated-based approaches and hydrothermal synthesis for preparing one-dimensional TiO2 nanomaterials and their highly-ordered nanoarrays are systematically reviewed. TiO2 nanotube arrays firmly loaded onto substrates, which facilitates the construction of TiO2 nanostructures and has been applied in nanodevices, can be synthesized by the anodization process. TiO2 nanomaterials with various morphologies （nanotubes, nanowires and nanorods） can be produced by the templated-based approaches combining with different preparation technologies （e. g. sol-gel process, electrochemical deposition and atomic layer deposition）. Furthermore, the parameters of microstructure of the TiO2 nanomaterials and their highly-ordered nanoarrays can be controlled by changing the pore size of the applied templates. TiO2 nanotubes with small diameter and large surface area can be prepared by the hydrothermal synthetic method. However, it is still difficult to prepare TiO2 highly-ordered nanoarrays firmly loaded on a substrate with the above method. The problems and developing trends in the synthesis of one- dimensional TiO2 nanomaterials and their nanostructures are presented.

关 键 词：一维纳米材料 纳米结构TiO2 阳极氧化法 模板 水热合成 

分 类 号：O614.41[理学—无机化学] TB383[理学—化学]