摘要
综述了近年来纳米TiO2核壳型复合光催化材料的研究进展。核壳型复合光催化剂兼备核和壳组分的特征而具有优异的物理或化学性能,其形成过程主要包括扩散阶段和浓缩反应阶段,其作用机理主要有化学键作用、库仑力静电引力作用和吸附层媒介作用等。按核的物质种类不同,将核壳型TiO2复合光催化剂系统分为以无机氧化物为核、以有机物为核及以单质为核,阐述了它们在环境治理的光催化领域中的应用,指出了纳米TiO2核壳型复合光催化材料存在的问题及未来的发展前景。
The research progress in the core-shell titania nanocomposite photocatalysis is reviewed. The core- shell structural nanocomposite materials present some novel physical and chemical properties because of special structures. Its formation process includes two steps： diffusion and reaction. The possible formation mechanism is known as chemical interaction, electrostatic interaction or absorbed layer as intermediate. According to the kinds of core materials, the core-shell structural nanocomposite materials are divided into three types, including inorganic oxide as core, organic oxide as core and single substance as core. Their applications in the area of photocatalysis in environment management are also discussed in recent years. Furthermore, the existing problems and development trend of the core- shell titania nanocomposite photoeatalysis are briefly summarized.
出处
《材料导报》
EI
CAS
CSCD
北大核心
2010年第17期53-56,共4页
Materials Reports
基金
上海市教育委员会科研创新项目(09YZ220)
上海高校选拔培养优秀青年教师科研专硕基金(571061)
