(A) Schematic illustration of the synthesis process, (B) SEM image, (C) photocatalytic hydrogen generation performance, and (D) simulated electric field distribution of O-CN-NTs. Adapted with permission from [133]. Copyright 2022, Elsevier. (E) Conceptual photocatalysis scheme on core-shell like carbon nitride, and (F) photocatalytic hydrogen evolution performance. Adapted with permission from [39]. Copyright 2017, Elsevier. (G) Schematic of the amidation reaction assisted supramolecular assemble process. (H) SEM image of actiniae-like ACN-14. (I) Photocatalytic hydrogen evolution performance. Adapted with permission from [134]. Copyright 2021, Wiley-VCH. (J) Schematic synthesis routes, and (K) SEM image of CT1 supramolecular aggregate. (L) Photocatalytic performance. Adapted with permission from [135]. Copyright 2020, American Chemical Society.