自氧氧化技术是高级氧化技术的一种。在水处理中己有百年的历史。近年来岂于对微污染物和难降解有机废水的关注，臭氧处理技术有了新的发展。本文总结了自氧的应用和三种臭氧氧化技术，指出了臭氧技术发展的方向。

采用等体积浸渍法制备以煤质活性炭为载体的金催化剂，并分别运用N2吸附-解吸法、X射线光电子能谱对样品进行表征。考察了活性炭负载的金催化剂催化分解低浓度臭氧的活性，并研究了载体预处理方法和催化剂后处理方法对催化剂活性的影响。常温下，相对湿度为60 %，臭氧浓度45 mg/m3空气，空速60000 h-1，气体与催化剂接触时间为0.06 s，1.6 g催化剂（AC/HNO3/NaBH4/Au/H2）在反应最初的16 h内臭氧去除率稳定在100 %，反应100 h后对臭氧的去除率仍在97 %以上，是所获得的臭氧去除性能最好的催化剂。表征结果表明，NaBH4还原处理使得活性炭比表面积、孔体积及石墨碳含量增加，含氧官能团下降，从而提高了催化剂的活性。载金后，催化剂比表面积和孔体积进一步增大，但石墨碳含量下降，C-O和COO-等含氧官能团增加。经臭氧氧化后，催化剂的比表面积和孔体积减小，石墨碳含量下降，C-O、COO-和C=O等含氧官能团增加，而金的粒径和价态并未改变，表明活性炭在金催化下被臭氧氧化

研究了不同初始浓度三氯乙烯（TCE）在TiO2薄膜催化剂降解。结果表明，TCE在主波长为254nm的低压汞灯照射下易于发生光降解反应，而TiO2薄膜催化剂能显著提高TCE的降解。光催化降解反应的伪一级速率常数随初始浓度的增加先升后降。在Langmuir-Hinshelwood方程基础上建立的光催化降解动力模型包含了发生在萍膜催化剂表面的光催化氧过程和发生在溶液体相的光降解过程，该动力学模型适用于表达低浓度有机物在薄膜催化剂上的光催化降解动力学。

本文利用文献提供的有机物与羟基自由基反应的速率常数，分别分析了羟基自由基与苯甲酸类、酚类、烷烃及其衍生物、以及小分子二元羧酸的反应速率常数与化合物理化参数间的定量关系

The photodegradation of persistent and bioaccumulative perfluorooctanoic acid( PFOA)in water by185 nm vacuum ultraviolet (VUV) light was examined to develop an effective technology to deal with PFOA pollution. PFOA degraded very slowly under irradiation of 254 nm UV light. However, 61.7% of initial PFOA was degraded by185nm VUV light within 2h, and defluorination ratio reached17.1%. Pseudo first-order-kinetics well simulated its degradation and defluorination. Besides, fluoride ion formed in water, 4 shorter-chain perfluorinated carboxylic acids (PFCAs), that is, perfluoroheptanoic acid, perfluoorhexanoic acid, perfluoropentanoic acid, and perfluoorbutanoic acid. These were identified as intermediates by LC-MS measurement. These PFCAs consecutively formed and further degraded with irradiation time. According to the mass balance calculation, no other by products were formed. It was proposed that PFCAs initially are decarboxylated by185 nm light, and the radical thus formed reacts with water to form shorter-chain PFCA with one less CF2unit.