“…Furthermore, research on COFs@new CNM composites, such as graphite-phase carbon nitride (g-C 3 N 4 ), carbon quantum dots, and graphene quantum dots, have also been reported over the past few years. [105][106][107] For example, semiconducting polymeric graphitic carbon nitride (g-C 3 N 4 , denoted as CN) photocatalyst has drawn dramatically increasing attention in recent years; this can be ascribed to its facile synthesis, low processing cost, easy functionalization, and high physicochemical stability as well as suitable energy alignment. It also shows great promise in the light-driven hydrogen evolution reaction.…”