在聚对苯二磺酰氧基桥联的高分子钴卟啉和紫外光存在条件下 ,研究了水中亚甲基兰光催化降解的动力学。本文首次报道了金属卟啉光催化降解水中有机污染物方面的研究。经过光催化降解 ,水溶液基本变为无色 ,化学需氧量 (COD)降低一半 ,同时脱色率达到 50 %到 6 0 %左右。还研究了溶液的可见光谱的变化和反应动力学曲线。实验证明亚甲基兰的降解完全符合一级反应动力学 ,其表观降解速率常数和降解半衰期分别为 0 35435h-1和1 96h。与高压汞灯相比 ,太阳光对亚甲基兰的降解具有相似的作用。此外 ,还讨论了pH值、光源以及底物等因素对光催化降解的影响。在金属卟啉的存在下 ,加入过氧化氢稀溶液亚甲基兰经过 3小时可以完全降解 The kinetics of photocatalytic degradation of methylene blue in water was studied in the presence of poly (p-phenylene disulfonyloxy) bridged polymer cobalt porphyrin and UV light. This paper reports for the first time the photocatalytic degradation of organic pollutants in water by metalloporphyrins. After photocatalytic degradation, the aqueous solution becomes almost colorless, the chemical oxygen demand (COD) is reduced by half, and the decolorization rate reaches 50% to 60% at the same time. The change of the visible spectrum of the solution and the reaction kinetic curve were also studied. The results showed that the degradation of methylene blue was in good agreement with the first-order reaction kinetics. The apparent degradation rate constant and half-life were 0 35435 h-1 and 1 96 h, respectively. Compared with high-pressure mercury lamps, sunlight has a similar effect on the degradation of methylene blue. In addition, the effects of pH value, light source and substrate on photocatalytic degradation were also discussed. In the presence of metalloporphyrin, methylene blue solution diluted with hydrogen peroxide can be completely degraded in 3 hours