Figure 2
From: One Dimensional Graphitic Carbon Nitrides as Effective Metal-Free Oxygen Reduction Catalysts

(a) XRD of TGCN and GCNNF, (b,c) SEM images of TGCN and GCNNF, respectively and (d) TEM image of TGCN.
From: One Dimensional Graphitic Carbon Nitrides as Effective Metal-Free Oxygen Reduction Catalysts
(a) XRD of TGCN and GCNNF, (b,c) SEM images of TGCN and GCNNF, respectively and (d) TEM image of TGCN.