利用层叠苯环π—π相互作用改善废水处理中酞菁催化剂的自氧化弊端  

Efficient improvement of the catalyst self-oxidation by immobilizing cobalt tetrasulfophthalocyanine during the dye degradation process

作　　者：吴刘曦 杨静[1,2] 沈忱思[1,2] 柳建设[1,2] 

机构地区：[1]东华大学环境科学与工程学院,上海201620 [2]国家环境保护纺织工业污染防治工程技术中心,上海201620

出　　处：《中国环境科学》2015年第7期2059-2064,共6页China Environmental Science

基　　金：国家自然科学基金(21407021);上海市青年科技英才扬帆计划(14YF1405000);东华大学中央高校基金(2232014D3-03;2232014G1-42);东华大学励志计划

摘　　要：提出以聚苯乙烯树脂为载体的四磺酸酞菁钴催化剂固载化方法,通过聚苯乙烯聚合物中的苯环与酞菁分子上的18π电子大环体发生π-π相互作用,改善四磺酸酞菁钴在过氧化氢存在条件下易自氧化降解的弊端.结果表明,由D201大孔强碱性阴离子交换树脂负载的四磺酸酞菁钴催化剂催化过氧化氢氧化50mg/L的染料C.I.Acid Blue 25的去除效率可达99%以上,并且循环套用后去除效率保持稳定,有效提高了四磺酸酞菁钴的催化活性与催化寿命.Cobalt tetrasulfophthalocyanine was successfully immobilized on polystyrene resin, protecting them from the self-oxidation under oxidation conditions. The results showed that the removal efficiency of dye C. I. Acid Blue 25 achieved to 99% in the presence of polystyrene resin D201 supported cobalt tetrasulfophthalocyanine and hydrogen peroxide. Besides, the regeneration studies demonstrated that the polystyrene resin immobilized catalyst could be reused effectively. The main mechanism was that cobalt tetrasulfophthalocyanine was firmly anchored through the electronic interactions between the π electrons of the benzene rings of the polystyrene polymers in resin and macrocycle of phthalocyanines. Then its drawback of self-oxidation was improved and the catalytic activity was enhanced.

关 键 词：金属酞菁 固载 聚苯乙烯 自氧化 染料污染物 

分 类 号：X703[环境科学与工程—环境工程]