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

Figure 6

(a) UV–vis DRS spectra and insert figure of Kubelka–Munk transformed function, (b) PL spectra, (c) ns-level time-resolved fluorescence lifetime spectra, (d) photocurrent of samples, (e) EPR spectra, and (f) surface photovoltage.

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