Covalent attachment of the water-insoluble Ni(PCy2NPhe2)2 electrocatalyst to electrodes showing reversible catalysis in aqueous solution

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dc.contributor.author Rodríguez-Maciá, Patricia
dc.contributor.author Priyadarshani, Nilusha
dc.contributor.author Dutta, Arnab
dc.contributor.author Weidenthaler, Claudia
dc.contributor.author Lubitz, Wolfgang
dc.contributor.author Shaw, Wendy J.
dc.contributor.author Rüdiger, Olaf
dc.date.accessioned 2016-08-10T12:20:30Z
dc.date.available 2016-08-10T12:20:30Z
dc.date.issued 2016-10
dc.identifier.citation Rodríguez-Maciá, Patricia; Priyadarshani, Nilusha; Dutta, Arnab; Weidenthaler, Claudia; Lubitz, Wolfgang; Shaw, Wendy J. and Rüdiger, Olaf, “Covalent attachment of the water-insoluble Ni(PCy2NPhe2)2 electrocatalyst to electrodes showing reversible catalysis in aqueous solution”, Electroanalysis, DOI: 10.1002/elan.201600306, vol. 28, no. 10, pp. 2452-2458, Oct. 2016.
dc.identifier.issn 1040-0397
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/2412
dc.identifier.uri http://dx.doi.org/10.1002/elan.201600306
dc.description.abstract Hydrogenases are a diverse group of metalloenzymes which catalyze the reversible conversion between molecular hydrogen and protons at high rates. The catalytic activity of these enzymes does not require overpotential because their active site has been evolutionarily optimized to operate fast and efficiently. These enzymes have inspired the development of molecular catalysts, which have dramatically improved in efficiency in recent years, to the point that some synthetic catalysts even outperform hydrogenases under certain conditions. In this work, we use a reversible noble-metal-free homogeneous catalyst, the [Ni(PCy2NPhe2)2]2+ complex, and we covalently immobilize it on a functionalized highly oriented pyrolytic graphite “edge” (HOPGe) electrode surface. This catalyst is not water soluble, but once it is surface-confined on the electrode, it maintains its catalytic properties in aqueous solutions, showing reversibility for H2 oxidation/reduction. Immobilization of the [Ni(PCy2NPhe2)2]2+ complex onto a multi-walled carbon nanotubes coated electrode leads to even higher catalytic current densities and enhanced stability. en_US
dc.description.statementofresponsibility by Patricia Rodríguez-Maciá, Nilusha Priyadarshani, Arnab Dutta, Claudia Weidenthaler, Wolfgang Lubitz, Wendy J. Shaw and Olaf Rüdiger
dc.format.extent Vol. 28, no. 10, pp. 2452-2458
dc.language.iso en_US en_US
dc.publisher Wiley-Blackwell en_US
dc.subject Bio-inspired catalyst en_US
dc.subject Electrocatalysis en_US
dc.subject Modified electrodes en_US
dc.subject Hydrogen production/oxidation en_US
dc.subject Noble-metal-free catalysis en_US
dc.title Covalent attachment of the water-insoluble Ni(PCy2NPhe2)2 electrocatalyst to electrodes showing reversible catalysis in aqueous solution en_US
dc.type Article en_US
dc.relation.journal Electroanalysis


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