Mazzanti, Stefano and Cao, Shaowen and ten Brummelhuis, Katharina and Voelkel, Antje and Khamrai, Jagadish and Sharapa, Dmitry I. and Youk, Sol and Heil, Tobias and Tarakina, Nadezda V. and Strauss, Volker and Ghosh, Indrajit and Koening, Burkhard and Oschatz, Martin and Antonietti, Markus and Savateev, Aleksandr (2021) All-organic Z-scheme photoreduction of CO2 with water as the donor of electrons and protons. APPLIED CATALYSIS B-ENVIRONMENTAL, 285: 119773. ISSN 0926-3373, 1873-3883
Full text not available from this repository. (Request a copy)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.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | ENHANCED PHOTOCATALYTIC ACTIVITY; CARBON NITRIDE; VISIBLE-LIGHT; POLY(HEPTAZINE IMIDES); TRANSIENT PHOTOCURRENT; FLAVIN PHOTOOXIDATION; HYDROGEN-PRODUCTION; CHARGE-TRANSFER; SEMICONDUCTOR; CATALYSIS; Carbon nitride; Photocatalysis; CO2; Flavins; Heterojunctions |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Organische Chemie > Lehrstuhl Prof. Dr. Burkhard König |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 20 Sep 2022 08:41 |
| Last Modified: | 20 Sep 2022 08:41 |
| URI: | https://pred.uni-regensburg.de/id/eprint/47629 |
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