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Doping-induced Hydrogen-Bond Engineering in Polymeric Carbon Nitride to Significantly Boost the Photocatalytic H2 Evolution Performance.

08:00 EDT 9th April 2019 | BioPortfolio

Summary of "Doping-induced Hydrogen-Bond Engineering in Polymeric Carbon Nitride to Significantly Boost the Photocatalytic H2 Evolution Performance."

Unlike graphene, graphitic carbon nitride (CN) polymer contains weak hydrogen bond and van der Waals (vdWs) interactions besides strong covalent bond, which control its final morphology and functionality. Herein, we propose a novel strategy to tune hydrogen bonds in polymeric CN through non-metal codoping. Incorporation of B and P dopants breaks partial hydrogen bonds within the layers, and simultaneously weakens the vdWs interaction between neighbouring layers, resulting in ultrathin codoped CN nanosheets. The 2D structure of the ultrathin sheet, broken hydrogen bonds and incorporated dopants endow them with efficient visible light harvesting, improved charge separation, and increased active edge sites that synergistically enhance the photocatalytic activity of doped CN. Specifically, the B/P-codoped CN exhibits an extremely high hydrogen-evolution rate of 10877.40 μmol h-1 g-1, much higher than most reported values of CN. This work demonstrates that hydrogen bond engineering is an effective strategy to modify the structure and properties of polymers for various applications.

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This article was published in the following journal.

Name: ACS applied materials & interfaces
ISSN: 1944-8252
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