摘要
TiO2纳米管是一种新型的高性能材料,因其独特的有序结构而显示出优异的性能,在许多领域有着广泛的应用。本文主要阐述了阳极氧化法制备TiO2纳米管及其纳米管生成的机制,分析了制备过程中电解液pH、阳极氧化电压对所生成的TiO2纳米管阵列结构的影响。实现TiO2纳米管定向排布,对于发挥低维材料的效用至关重要。高度有序的纳米管阵列结构,具有显著的量子尺寸效应和取向效应。对TiO2纳米管阵列进行掺杂改性能够增强材料的光催化性能,提高其光催化效率。在光照条件下,光生电子能快速从TiO2纳米管的导带进入导电基体,大大降低了光生载流子复合几率,从而使其表现出良好的光电活性,可用于太阳能电池领域,在抗菌消毒,污水处理方面也具有很大的应用价值。
As a new high performance material, TiO2 nanotubes possess unique and orderly structure, so they have been widely used in many fields. In this paper the anodic oxidation method for preparation of TiO：nanotubes and their formation mechanism were mainly introduced, also the structure of TiO： nanotube arrays affected by electrolyte pH and voltage was analyzed. Highly ordered nanotube array structure has obvious quantum size effect and orientation effect, which are critical usefulness for low dimensional materials orientation. When doped by right element in TiO~ nanotubes array, photocatalytic property and photocatalytic efficiency will be enhanced. Under illumination, photo- generated electrons can quickly shift from conduction band into substrate, so the recombination rate of photo- generated electrons will be reduced greatly. Their good photoelectric performance can be used in both solar cells and sewage treatment area.
出处
《化学通报》
CAS
CSCD
北大核心
2012年第9期804-807,共4页
Chemistry
基金
国家自然科学基金项目(20806093)
山东省自然科学基金项目(ZR2011EMQ001)
青岛市科技发展计划项目(11-2-4-4-(10)-jch)
中央高校基本科研业费(11CX05013A)青年骨干教师建设工程资助
关键词
TIO2纳米管
阳极氧化法
光催化
Titanium dioxide nanotubes, Anodic oxidation method, Photocatalysis
