Photocatalytic hydrogen production using polymeric carbon nitride with a hydrogenase and a bioinspired synthetic Ni catalyst.


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Authors
Caputo, Christine A 
Gross, Manuela A 
Lau, Vincent W 
Cavazza, Christine 
Lotsch, Bettina V 
Abstract

Solar-light-driven H2 production in water with a [NiFeSe]-hydrogenase (H2ase) and a bioinspired synthetic nickel catalyst (NiP) in combination with a heptazine carbon nitride polymer, melon (CN(x)), is reported. The semibiological and purely synthetic systems show catalytic activity during solar light irradiation with turnover numbers (TONs) of more than 50,000 mol H2(mol H2ase)(-1) and approximately 155 mol H2 (mol NiP)(-1) in redox-mediator-free aqueous solution at pH 6 and 4.5, respectively. Both systems maintained a reduced photoactivity under UV-free solar light irradiation (λ>420 nm).

Description
Keywords
carbon nitride, enzyme catalysis, hydrogen production, hydrogenases, photocatalysis, Catalysis, Hydrogen, Nickel, Nitriles, Photochemistry
Journal Title
Angew Chem Int Ed Engl
Conference Name
Journal ISSN
1433-7851
1521-3773
Volume Title
43
Publisher
Wiley
Sponsorship
Engineering and Physical Sciences Research Council (EP/H00338X/2)