粘土负载铁异相光催化降解有机染料罗丹明B

Immobilized Fe^(3+)@Clay:an Efficient Heterogeneous Photo-Fenton Catalyst for Degradation of Rhodamine B

通过将Fe3+负载到经过煅烧的粘土(Clay)上制备复合型材料Fe-Clay(简称FeC)用作光催化剂,在可见光(λ>420nm)照射下,利用FeC光催化降解染料罗丹明B(Rhodamine B,RhB),研究了光催化反应介质pH及H2O2加入量等因素对RhB降解特性的影响.结果表明,在可见光照射下,RhB/FeC/H2O2体系反应180min后RhB的脱色率达100%,催化剂循环使用4次,其催化活性基本不变,可重复使用.

Fe3+ supported on calcined clay(FeC)was prepared as a heterogeneous photo-Fenton catalyst and used for degradating Rhodamine B(RhB).The effects of concentration of H2O2 and initial pH were investigated.The results show that RhB could be efficiently degraded by the RhB/FeC/H2O2 system under visible irradiation with 100% decolorization after 180min reaction.The catalyst acitivity of FeC did not exhibit any obvious loss after the RhB degradation experiments in successive four batches.