Synthesis And Properties Of Two Kinds Of Peripheral Modification Sulfur-containing Metal-porphyrazines

Water is the irreplaceable and valuable natural resources on the earth,and theindispensable basic material for the existence and production of our mankind. As aresult of the rapid development of modern civilization, science and technology,environmental pollution becomes more and more seriously, which has become asignificant and practical topic worldwide.Advanced Oxidation Technology is a new waste water treatment technology. Inthe process of Advanced Oxidation Technology, solar energy is used as energy source,H₂O₂and O₂as oxidant and water as sole solvent, whose virtues are high treatmentefficiency, simple technical equipment, operating controlling easily. The technique ofbiomemetic catalytic and semiconductor photocatalytic oxidation are the most hottopics of Advanced Oxidation Technology.In this paper, we use Iron-tetra-（1,4-dithiin）-porphyrazine （abbreviated asFePz（dtn）4） to activate and catalyze H₂O₂to degrade reactive brilliant red X3B. In thesecond chapter, the effects of various parameters such as initial pH, light intensity,temperature and concentration of hydrogen peroxide, etc., are evaluated. Activespecies in the catalyst system were tested by means of flurescence techniques andquenching experiment in the third chapter to evaluate the dequadation mechanism. Inorder to improve the utilization of visible light, deposition of noble metals and dyesensitization were used to modify TiO₂in the fourth chapter. The main results aresummarized as follow:1FePz（dtnCl₂）₄can activate and catalyze H₂O₂to degrade X3B in a wide pHrange.The concentration of H₂O₂, light intensity and reaction temperature have anobvious influence on the catalytic activity of FePz（dtnCl₂）₄.2By means of the flurescence techniques, we tested activate free radical in thecatalyst system. OH radicals were identified as reactive oxidizing species in thecatalytic system.3Photocatalytic reaction kinetic measurements were made to reveal the relationbetween the degradation rate of X3B and the initial concentration of H₂O₂in thepresence of FePz（dtnCl₂）₄. The results indicated that the photocatalytic reaction ofFePz（dtnCl₂）₄answered to the Michaelis-Menten equation,4By means of noble metal deposition and dye sensitization, TiO₂can utilize visible light to degrade orgnic compound. But the two of noble metal deposition anddye sensitization did not exhibit significant synergistic effects.