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研究了 几种国 产和进口 二氧化钛 在光催 化降解染 料污染 物方面的 应用． Ｘ 射线 衍射 及扫描电镜 分析结果 表明，锐 钛矿型含 量高以 及粒径 小的 二氧 化钛 能很 好地 催化 降解 有机 染 料． 不同结构染 料的降 解难易顺 序为： 酞菁类 ＞ 蒽醌类 ＞ 单偶氮 类； 降解 速度 与吸 附有 直接 关系 ． 搅 拌分散体系 和糊状 体系的实 验结果表 明，难于 生物降 解的高浓 度直接耐 晒大红 ４ Ｂ Ｓ 工业 染料 废水 可被光催化 降解并 矿化，国产 催化剂 可重复利 用多次 ，光源可采 用太阳 光．
The application of several kinds of domestic and imported titanium dioxide in photocatalytic degradation of dye pollutants was studied. The results of X-ray diffraction and scanning electron microscopy show that TiO2 with high anatase content and small particle size can catalyze the degradation of organic dyes. The degradation order of dyes with different structures is phthalocyanine> anthraquinone> monoazo; the degradation rate is directly related to the adsorption. The experimental results of the agitated dispersion system and the pasty system show that the high concentration Direct Fast Red 4 B S industrial dye wastewater, which is difficult to be biodegraded, can be photocatalytically degraded and mineralized. The domestic catalyst can be reused many times, and the light source can be sunlight .