Publication
730
J. Phys. Chem. C , 117 (33),17073-17077, 2013
DOI:10.1021/jp405134a
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Monometallic cobalt-trisglyoximato complexes as precatalysts for catalytic H2 evolution in water |
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Sanae El Ghachtouli, Maxime Fournier, Stéphanie Cherdo, Régis Guillot, Marie-France Charlot, Elodie Anxolabéhère-Mallart, Marc Robert, and Ally Aukauloo
Institut de Chimie Moléculaire et des Matériaux d’Orsay, UMR-CNRS 8182, Université de Paris-Sud XI, F-91405, Orsay, France
Univ Paris Diderot, Sorbonne Paris Cité, Laboratoire d’Electrochimie Moléculaire, UMR 7591 CNRS, 15 rue Jean-Antoine de Baïf, F-75205 Paris Cedex 13, France
CEA, iBiTec-S, Service de Bioénergétique Biologie Structurale et Mécanismes (SB2SM), F-91191, Gif-sur-Yvette, France
Electrochemical investigation on differently substituted boron-caped and glyoximato-strapped ligands of cobalt clathrochelate complexes in the presence of acid revealed the formation of cobalt-based nanoparticles at the surface of the electrode. The potential for the electrochemical deposition is a function of the chemical nature of the substituents. The overpotential for the catalytic proton reduction of the resulting cobalt particles at pH 7 was found to be 700 mV less negative than on the bare carbon electrode for a geometric current density of 5 mA/cm2 |
