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8537056 
Journal Article 
铁酸铜非均相活化过硫酸盐降解罗丹明B 
Yang, K; Tang, Q; Yang, XD; Li, MR; Ding, XX; Bai, MQ; Wang, YR 
2019 
1 
Zhongguo Huanjing Kexue / China Environmental Science
ISSN: 1000-6923 
Chinese Society for Environmental Sciences 
39 
9 
3761-3769 
Chinese 
In this study, a novel magnetic catalytic CuFe2O4, was synthezed and used to activate peroxymonosulfate (PMS) to degrade Rhodamine B(RhB) which is an anthracene dye. The effects of PMS concentration, CuFe2O4 dosage, solution pH, inorganic ions and natural organic matter on RhB degradation were investigated. The results showed that the RhB removal reached 88.87% after 30min reaction under neutral pH conditions when the initial concentrations of RhB, PMS and CuFe2O4 were 5µmol/L, 0.1mmol/L and 0.1g/L, respectively. And Cl-, HCO3 - had no significant effect on the degradation of RhB, while H2PO4 2-,C2O4 2- and humic acid had significant inhibition on the degradation of RhB. Free radical identification experiments showed that SO4 - and •OH were the main free radicals in the system of CuFe2O4/PMS under neutral and weak alkaline conditions. It was found that the solution gradually fades and the formate, acetate, oxalate and ammonium ions were producedin the process of RhB degradation. This is attributing to the destruction of the chromophore on RhB molecule upon SO4 - and •OH attacks, leading to the opening of benzene ring and the falling off of nitrogen atom. The mineralization experiment showed that when 0.2mmol/L of RhB was degraded in the CuFe2O4/PMS system for 10h, the mineralization rate reached 62%. Catalyst recycling experiments showed that the prepared CuFe2O4 had a good recycling ability. © 2019, Editorial Board of China Environmental Science. All right reserved. 
CuFe2O4; Hydroxyl radical; Persulfate; Rhodamine B; Sulfate radical