摘要
可见光响应范围窄和量子效率低是导致TiO2纳米管光催化活性低的两个主要因素,而用微量的金属元素取代TiO2晶格里的钛,通过调整其能带结构,改变电子-空穴复合率和界面电子转移速度,可提高TiO2在可见光下的催化活性。综述了近年来利用金属掺杂提高光催化效率的研究成果,并指出目前存在的问题,对今后的研究提出了展望。
Narrow range of visible light response and low photo-quantum are the two major factors that result in low photocatalytic activity of TiO2 nanotubes. Metal cation doping which replace Ti4＋ in TiO2 with a small amount of metal cation can improve the TiO2 photocatalytic activity under visible light by adjusting its energy band structure, change the electron-hole recombination and interracial electron transfer rate. The recent progress in photocatalytic per formance of metal-doped TiO2 nanotubes is reviewed. Finally, the exiting problems and further development in this field are also presented.
出处
《材料导报》
EI
CAS
CSCD
北大核心
2011年第13期20-24,共5页
Materials Reports
基金
河北省水资源可持续利用与开发重点实验室开放基金(W1012)
国家自然科学基金(40873018)
关键词
TIO2
纳米管
金属掺杂
光催化
titanium oxide, nanotube, metal doped, photocatalysis
