Three-dimensional ordered macroporous ceria–lanthanum cobaltate composite as efficient catalyst to activate peroxymonosulfate for N , N -dimethylformamide degradation

In this study, the three-dimensional ordered microporous (3DOM) ceria–lanthanum cobaltate composite (CeO 2 -3DOM LaCoO 3 ) with peroxymonosulfate (PMS) activation function was prepared by colloidal crystal template method combined with impregnation method. The catalyst has a 3DOM structure with a specific surface area of 67.33 m 2 g −1 , 8.049 times of LaCoO 3 prepared by sol–gel method. CeO 2 was uniformly dispersed on the surface of 3DOM LaCoO 3 . CeO 2 -3DOM LaCoO 3 has an excellent catalytic effect in PMS activation to degrade N, N-Dimethylformamide (DMF). When the DMF initial concentration was 100 mg L −1 , the initial pH was 7, the PMS dosage was 2000 mg L −1 , and the catalyst dosage was 400 mg L −1 , DMF degradation percentage reached 100