fig9

Figure 9. (A) Abridged general view of N-GDY synthesis processes. This figure is used with permission from Kan et al.^[57]; (B) Diagrammatic sketch of N doping process of GDY. This figure is used with permission from Zhang et al.^[58]; (C) Molecular model of adjusting alkyne bonds of GDY to prepare HsGDY. This figure is used with permission from Ren et al.^[64]. GDY: Graphdiyne; HsGDY: hydrogen-substituted graphdiyne.