Heteroatom doped graphdiyne as efficient metal-free …
When a single element was doped in GD, the I D / I G ratio increased from an initial value of 0.74 for GD to 0.90 for NGD, 0.95 for BGD, 0.96 for SGD and 1.0 for FGD (Fig. 3a and Table S2†). When N and X (X = S, B and F) were co-doped in GD, the I D / I G ratio increased further (0.98 for NBGD, 1.13 for NSGD and 1.22 for NFGD) . These ...