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Solar‐to‐H2O2 Energy Conversion by the Photothermal Effect of a Polymeric Photocatalyst via a Two‐Channel Pathway

Von Wiley-VCH zur Verfügung gestellt

Change the channel: Benefiting from the photothermal effect of resorcinol−formaldehyde (RF), both molecular collision and the conductivity of RF are enhanced under higher temperature, resulting in increased selectivity in oxygen reduction and H2O2 photosynthetic rate. H2O2 was produced during the photothermal process through a two-channel pathway.


With a view to using solar energy, the exploitation of near-infrared (NIR) light, which constitutes about 50 % of solar energy, in photocatalytic H2O2 synthesis remains challenging. In this study, resorcinol−formaldehyde (RF), which has a relatively low bandgap and high conductivity, is introduced for photothermal catalytic generation of H2O2 under ambient conditions. Owing to the promoted surface charge transfer rate under high temperature, the photosynthetic yield reaches roughly 2000 μm within 40 min under 400 mW cm−2 irradiation with a solar-to-chemical conversion (SCC) efficiency of up to 0.19 % at 338 K under ambient conditions, exceeding the rate of photocatalysis with a cooling system by a factor of about 2.5. Notably, the H2O2 produced by RF during photothermal process was formed via a two-channel pathway, leading to the overall promotion of H2O2 formation. The resultant H2O2 can be applied in situ for pollutant removal. This work offers a sustainable and economical route for the efficient formation of H2O2.

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