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All-organic Z-scheme photoreduction of CO2 with water as the donor of electrons and protons

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Mazzanti,  Stefano
Aleksandr Savateev, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society;

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Cao,  Shaowen
Markus Antonietti, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society;

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ten Brummelhuis,  Katharina
Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society;

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Völkel,  Antje
Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society;

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Youk,  Sol
Martin Oschatz, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society;

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Heil,  Tobias
Nadezda V. Tarakina, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society;

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Tarakina,  Nadezda V.
Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society;

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Strauß,  Volker
Volker Strauß, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society;

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Oschatz,  Martin
Martin Oschatz, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society;

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Antonietti,  Markus
Markus Antonietti, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society;

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Savateev,  Aleksandr
Aleksandr Savateev, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society;

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Citation

Mazzanti, S., Cao, S., ten Brummelhuis, K., Völkel, A., Khamrai, J., Sharapa, D. I., et al. (2021). All-organic Z-scheme photoreduction of CO2 with water as the donor of electrons and protons. Applied Catalysis B: Environmental, 285: 119773. doi:10.1016/j.apcatb.2020.119773.


Cite as: http://hdl.handle.net/21.11116/0000-0007-AC04-3
Abstract
Carbon nitrides and flavins are two classes of easy accessible transition metal-free, photoactive materials. Their photocatalytic efficiency to enable a variety of chemical reactions is well documented. Here, we report on their combination in one photocatalytic system by designing biomimetic non-spherical core-shell architectures comprising micro-sized crystals of flavins decorated by potassium poly(heptazine imide) nanoparticles on the surface. The designed non-spherical core-shell composites are tested in the photocatalytic CO2 reduction to CH4, MeOH, EtOH and CO using water vapor as a donor of electrons and protons at the gas-solid interface. The forged Z-scheme heterojunction between these two materials allows increasing of their photocatalytic performance. Whereby excited states lifetimes are extended by interface charge recombination and photoredox processes are boosted because of an overall wider band gap.