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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.
This article was published in the following journal.
Name: ACS applied materials & interfaces
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Enzymes of the isomerase class that catalyze the oxidation of one part of a molecule with a corresponding reduction of another part of the same molecule. They include enzymes converting aldoses to ketoses (ALDOSE-KETOSE ISOMERASES), enzymes shifting a carbon-carbon double bond (CARBON-CARBON DOUBLE BOND ISOMERASES), and enzymes transposing S-S bonds (SULFUR-SULFUR BOND ISOMERASES). (From Enzyme Nomenclature, 1992) EC 5.3.
Organic compounds containing a carbon-nitrogen double bond where a NITROGEN atom can be attached to HYDROGEN or an alkyl or aryl group.
Enzymes that catalyze the joining of two molecules by the formation of a carbon-carbon bond. These are the carboxylating enzymes and are mostly biotinyl-proteins. EC 6.4.