“…CoFe 2 O 4 [32][33][34] and NiFe 2 O 4 [34,35] were synthesized according to a modified sol-gel and combustion method (see details in Electronic Supplementary Material, online). (Co, Ni)Fe 2 O 4 loaded g-C 3 N 4 photocatalysts were prepared by a facile one-pot method.…”