fig4
Figure 4. (A) Reaction equation for synthesizing GDY; (B) The photograph of GDY films (3.61 cm2); (C) The SEM images of GDY at different magnifications; (D) Raman spectra of GDY films. This figure is used with permission from Li et al.[13]. GDY: Graphdiyne; SEM: scanning electron microscopy.
