Fig. 10

Recyclability study of Fe–N–C SAzyme in the Fe–N–C/DDQ catalyst system for the aerobic oxidation of 2,6-dimethyl-4-phenyl-1,4-dihydropyridine-3,5-dicarboxylate for 6.51 h.

Recyclability study of Fe–N–C SAzyme in the Fe–N–C/DDQ catalyst system for the aerobic oxidation of 2,6-dimethyl-4-phenyl-1,4-dihydropyridine-3,5-dicarboxylate for 6.51 h.