Fig. 4: Photocatalytic H2O2 production activity and selectivity of NiSAPs-PuCN.
From: Developing Ni single-atom sites in carbon nitride for efficient photocatalytic H2O2 production
a The time course of H2O2 production measured in pure water under visible light irradiation (λ ≥ 420 nm, 60 mW cm−2; 30 mg catalyst in 30 ml pure water, 1 g L−1 catalyst; 25 °C). Error bars are the standard deviations of three replicate measurements. b Performance comparison of all samples in pure water under visible light conditions and H2O2 generation performance of NiSAPs-PuCN under AM 1.5 G illumination (60 mW cm-2). c The wavelength-dependent AQY for photocatalytic H2O2 production in pure water by NiSAPs-PuCN (50 mg catalyst in 50 ml pure water, 1 g L-1 catalyst, 25 °C). d RRDE polarization curves over BCN and NiSAPs-PuCN in O2-saturated 0.1 M KOH at 1600 rpm with ring current (upper part) and disk current (bottom part). e H2O2 selectivity as a function of the applied potential. The inset shows the calculated average number of transferred electrons (n). f The amount of H2O2 generated by NiSAPs-PuCN under AM 1.5 G simulated sunlight irradiation (100 mW cm-2) and the corresponding SCC efficiency (500 mg in 100 ml pure water, 25 °C). g Summarized SCC efficiencies of recently reported photocatalysts (g-C3N4-based and other types of photocatalysts) for H2O2 production in pure water.
