Enhanced catalytic peroxymonosulfate activation over carbon shells encapsulating cobalt ferrite via radical and nonradical routes

摘要

Well-defined carbon shells encapsulating CoFe2O4 deliver superior performance in catalytic peroxymonosulfate activation for organics degradation with a reaction rate constant of 0.269 min(-1), 4.7 times the hollow CoFe2O4 and 2.7 times the solid carbon sphere encapsulated one. This is attributed to the comprehensive effects of the Co2+ and C=O active sites for free radical and nonradical mechanisms. The nanostructured materials outperformed most of the carbon- or cobalt-iron-based catalysts.