Triazine-based Carbon Nitrides for Visible-Light-Driven Hydrogen Evolution


  • Financial support by the Deutsche Forschungsgemeinschaft (projects LO1801/1-1, SCHN377/15-1, SE1417/5-1), the cluster of excellence “Nanosystems Initiative Munich” (NIM), and the Center for NanoScience (CeNS) is gratefully acknowledged. We thank V. Duppel, C. Minke, A. Ranft, S. Hug, M. Schreiber, and W. König for their assistance with the experimental work.


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A new dimension: The doping of amorphous poly(triazine imide) (PTI) through ionothermal copolymerization of dicyandiamide with 4-amino-2,6-dihydroxypyrimidine (4AP) results in triazine-based carbon nitrides with increased photoactivity for water splitting compared to crystalline poly(triazine imide) (PTI/Li+Cl, see picture) and melon-type carbon nitrides. This family of carbon nitride semiconductors has potential as low-cost, environmentally clean photocatalysts for solar fuel production.