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.
出处
《中国环境科学》
EI
CAS
CSCD
北大核心
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
关键词
金属酞菁
固载
聚苯乙烯
自氧化
染料污染物
phthalocyanine
immobilization
polystyrene
self-oxidation
dye pollutants