自 1 976年 Carey等发现 Ti O2 - H2 O体系在光照条件下可非选择的氧化降解有机物以来 ,半导体多相光催化技术已成为一个新兴的研究学科 .由于Ti O2 具有化学稳定性好、光催化活性高、价廉易得等优点 ,已被广泛应用于处理各种有机废水 [1] .在难降解有毒有机物的矿化分解等方面 Since 1971, when Carey et al. Found that Ti O2 - H 2 O system can oxidatively degrade organic matter under non-selective conditions under illumination, semiconductor heterogeneous photocatalysis has become an emerging research subject.As Ti O2 has good chemical stability, High catalytic activity, cheap and easy-to-use, has been widely used in the treatment of various organic wastewater [1] .In the refractory degradation of toxic organic compounds such as mineralization