基于二氧化铈复合类芬顿催化剂的合成及催化性能研究

Synthesis and Catalytic Properties of Fenton-like Composite Catalysts Based on CeO_(2) Nanomaterials

通过水热法合成制备二氧化铈(CeO_(2))纳米颗粒,再通过和沉淀法合成以CeO_(2)为基底负载MnFe_(2)O_(4)的磁性复合材料。通过条件优化实验确定复合材料类芬顿催化降解染料的最佳条件,实验证明复合材料能够在90 min内有效降解罗丹明B和亚甲基蓝,并具有较好的磁性回收性能和重复利用性能,在未来的水处理技术研究领域具有很大的潜力。

In this work,cerium oxide(CeO_(2)) nanoparticles were synthesized by a hydrothermal method.CeO_(2)-MnFe_(2)O_(4),synthesized via depositing MnFe_(2)O_(4) nanoparticles onto CeO_(2),was utilized for organic contaminant degradation.Rhodamine B(RhB) and Methylene blue(MB) were used as the model emerging organic contaminant to test the Fenton-like activity of CeO_(2)-MnFe_(2)O_(4),respectively.CeO_(2)-MnFe_(2)O_(4) could degradation more than 95% of the model emerging organic contaminant in 90 minutes.In addition,the composite catalysts exhibited good magnetic recovery performance and reuse performance,which proved the potential of CeO_(2)-MnFe_(2)O_(4) in water treatment.