纳米TiO_2对有机污染物的光催化降解机理及发展趋势

Mechanism and tendency of photocatalytic degradation of nanometer TiO_2 for organic contaminations

光催化降解有机污染物消除其对环境的污染是目前环境领域中的新兴研究课题。通常情况下,纳米二氧化钛只能在紫外光范围内降解某些有机物。作者提出了通过施主半导化掺杂的方式使纳米二氧化钛在可见光范围具有光催化降解有机污染物的能力,并介绍了纳米二氧化钛光催化降解有机污染物的机理及把它应用于消除有机农药残余污染的研究进展和发展趋势。

It is a new research subject to remove the pollution of organic contaminations by photocatalytic degradation in the environment-protecting field nowadays. Usually, photocatalytic degradation of nanometer TiO_2 for organic substances may take place only in the range of ultraviolt. In the paper, the route to move the range of the light of photocatalytic degradation from ultraviolet light to vision light by donor doping is stated. The mechanism of photocatalytic degradating organic contaminations and the research tendency of removing the pollution of pesticide residue with TiO_2 nanometre materials are intruduced .