Optimizing the Crystallinity of Heptazine-Based Crystalline Carbon Nitride by Regulating Temperature for Enhanced Photocatalytic H<sub>2</sub> Evolution

<div>(a) SEM and (b) TEM images of PCN (insert electron diffraction patterns); SEM images of (c) KCN540, (d) KCN570, (e) KCN600, and (f) KCN630; (g) TEM images of KCN630 (insert electron diffraction patterns); (h) and (i) high-resolution TEM of KCN630.</div>

Journal of Nanomaterials

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Figure 4: Optimizing the Crystallinity of Heptazine-Based Crystalline Carbon Nitride by Regulating Temperature for Enhanced Photocatalytic H<sub>2</sub> Evolution 

Figure 4 | Optimizing the Crystallinity of Heptazine-Based Crystalline Carbon Nitride by Regulating Temperature for Enhanced Photocatalytic H2 Evolution 