无机材料学报2023，Vol.38Issue(4)：469-478,10.DOI:10.15541/jim20220591
CoFe2O4@Zeolite催化剂活化过一硫酸盐对甲基橙的强化降解:性能与机理
Enhanced Degradation of Methyl Orange with CoFe2O4@Zeolite Catalyst as Peroxymonosulfate Activator:Performance and Mechanism
摘要
Abstract
CoFe2O4@zeolite(CFZ)was prepared by using a co-precipitation hydrothermal method and used for synthetic dyes degradation by activating peroxymonosulfate(PMS).Comprehensive characterizations suggest that CoFe2O4 nanoparticles composing porous shell layer is uniformly covered on Na-A zeolite.The specific surface area of CFZ is 107.06 m2/g,three times that of the original zeolite.Since CFZ has a saturation magnetization of 29.0 A·m2·kg-1,it could be separated efficiently by magnetic separation.Catalytic degradation experiments indicate that the removal of methyl orange(MO)in the CFZ/PMS system is much higher than that using CFZ or PMS alone.Under the optimum condition([MO]=50 mg/L,[PMS]=1.0 mmol/L,0.2 g/L CFZ,pH 8 and T=25℃),MO removal efficiency is up to 97.1％.Effect of various factors,including pH,PMS and CFZ dosage,MO concentration and presence of coexisting anions,on the catalytic performance of CFZ is carefully studied.Reactive oxygen species quenching experiments suggest that 1O2 and O2?-play a dominant role in the degradation process.CFZ shows excellent recycling performance that the MO removal is declined by only 2.4％after 5 cycles.Catalytic degradation mechanism of the CFZ/PMS system is explored in detail.关键词
高级氧化技术/过一硫酸盐活化/磁性催化剂/CoFe2O4@Zeolite/活性氧粒子/降解Key words
advanced oxidation processe/peroxymonosulfate activation/magnetic catalyst/CoFe2O4@Zeolite/reactive oxygen species/degradation分类
通用工业技术引用本文复制引用
王磊,李建军,宁军,胡天玉,王洪阳,张占群,武琳馨..CoFe2O4@Zeolite催化剂活化过一硫酸盐对甲基橙的强化降解:性能与机理[J].无机材料学报,2023,38(4):469-478,10.基金项目
Natural Science Foundation of Anhui Province(1908085ME127) （1908085ME127）
Research Foundation of the Institute of Environment-friendly Materials and Occupational Health(Wuhu),Anhui University of Science and Technology(ALW2021YF11) （Wuhu）
