Fig. 7: Behavior of the charges and dioxygen on the surfaces of PCN and PCN-NaCA-2. | Nature Communications

Fig. 7: Behavior of the charges and dioxygen on the surfaces of PCN and PCN-NaCA-2.

From: Mechanistic analysis of multiple processes controlling solar-driven H2O2 synthesis using engineered polymeric carbon nitride

Fig. 7

a Surface photovoltage (SPV) spectra of PCN (black curve) and PCN-NaCA-2 (red curve). b The transient photovoltage spectra of PCN (black curve) and PCN-NaCA-2 (red curve) with 100 μJ 355 nm pulse excitation. c Temperature programmed oxygen desorption (O2-TPD) profiles of PCN (black curve) and PCN-NaCA-2 (red curve). d, e The linear sweep voltammetry (LSV) plots of PCN-NaCA-2 (d) and PCN (e) on rotating ring disk electrode (RRDE); Id is the disk current density, and Ir is the ring current density divided by collection efficiency. PCN polymeric carbon nitride, PCN-NaCA-2 polymeric carbon nitride with sodium cyanaminate moiety.

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