期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 53, 期 41, 页码 11001-11005出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201405161
关键词
carbon nitride; hydrogen evolution; photocatalysis; semiconductors; solar-energy conversion
资金
- King Abdullah University of Science and Technology
Described herein is the photocatalytic hydrogen evolution using crystalline carbon nitrides (CNs) obtained by supramolecular aggregation followed by ionic melt polycondensation (IMP) using melamine and 2,4,6-triaminopyrimidine as a dopant. The solid state NMR spectrum of N-15-enriched CN confirms the triazine as a building unit. Controlling the amount and arrangements of dopants in the CN structure can dramatically enhance the photocatalytic performance for H-2 evolution. The polytriazine imide (PTI) exhibits the apparent quantum efficiency (AQE) of 15% at 400 nm. This method successfully enables a substantial amount of visible light to be harvested for H-2 evolution, and provides a promising route for the rational design of a variety of highly active crystalline CN photocatalysts.
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