Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 58, Issue 42, Pages 14950-14954Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201908322
Keywords
carbon nitride; electron deficient monomers; packing geometry; photocatalysis; water splitting
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Funding
- Alexander von Humboldt Foundation
- Max Planck Institute of Colloids and Interfaces
- National Natural Science Foundation of China [21761132002, 21425309]
- National Key R&D Program of China [2018YFA0209301]
- 111 Project [D16008]
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Polymeric carbon nitride (PCN) is usually synthesized from nitrogen-rich monomers such as cyanamide, melamine, and urea, but is rather disordered in many cases. Now, a new allotrope of carbon nitride with internal heterostructures was obtained by co-condensation of very electron poor monomers (for example, 5-amino-tetrazole and nucleobases) in the presence of mild molten salts (for example, NaCl/KCl) to mediate the polymerization kinetics and thus modulate the local structure, charge carrier properties, and most importantly the HOMO and LUMO levels. Results reveal that the as-prepared NaK-PHI-A material shows excellent photo-redox activities because of a nanometric hetero-structure which enhances visible light absorption and promotes charge separation in the different domains.
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