Harvesting solar light with crystalline carbon nitrides for efficient photocatalytic hydrogen evolution

Manas Kumar Bhunia, Kazuo Yamauchi, Kazuhiro Takanabe*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

211 Scopus citations

Abstract

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 15N-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 H2 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 H2 evolution, and provides a promising route for the rational design of a variety of highly active crystalline CN photocatalysts. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Original languageEnglish (US)
Pages (from-to)11001-11005
Number of pages5
JournalAngewandte Chemie International Edition
Volume53
Issue number41
DOIs
StatePublished - Aug 14 2014

ASJC Scopus subject areas

  • Chemistry(all)
  • Catalysis

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