title: A Poly(cobaloxime)/Carbon Nanotube Electrode: Freestanding Buckypaper with Polymer-Enhanced H2-Evolution Performance.
abstract: A freestanding H2-evolution electrode consisting of a copolymer-embedded cobaloxime integrated into a multiwall carbon nanotube matrix by π-π interactions is reported. This electrode is straightforward to assemble and displays high activity towards hydrogen evolution in near-neutral pH solution under inert and aerobic conditions, with a cobalt-based turnover number (TON(Co)) of up to 420. An analogous electrode with a monomeric cobaloxime showed less activity with a TON(Co) of only 80. These results suggest that, in addition to the high surface area of the porous network of the buckypaper, the polymeric scaffold provides a stabilizing environment to the catalyst, leading to further enhancement in catalytic performance. We have therefore established that the use of a multifunctional copolymeric architecture is a viable strategy to enhance the performance of molecular electrocatalysts.
authors.affiliation: Christian Doppler Laboratory for Sustainable SynGas Chemistry, Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW, Cambridge, UK.
authors.forename: Bertrand
authors.initials: B
authors.lastname: Reuillard
authors.affiliation: Christian Doppler Laboratory for Sustainable SynGas Chemistry, Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW, Cambridge, UK.
authors.forename: Julien
authors.initials: J
authors.lastname: Warnan
authors.affiliation: Christian Doppler Laboratory for Sustainable SynGas Chemistry, Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW, Cambridge, UK.
authors.forename: Jane J
authors.initials: JJ
authors.lastname: Leung
authors.affiliation: Christian Doppler Laboratory for Sustainable SynGas Chemistry, Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW, Cambridge, UK.
authors.forename: David W
authors.initials: DW
authors.lastname: Wakerley
authors.affiliation: Christian Doppler Laboratory for Sustainable SynGas Chemistry, Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW, Cambridge, UK. reisner@ch.cam.ac.uk.
authors.forename: Erwin
authors.initials: E
authors.lastname: Reisner
mesh_terms: D004566:Electrodes; D006859:Hydrogen / Q000737:chemistry; D008855:Microscopy, Electron, Scanning; D037742:Nanotubes, Carbon; D009942:Organometallic Compounds / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry*
chemical_list: D037742:Nanotubes, Carbon; D009942:Organometallic Compounds; D011108:Polymers; C556179:cobaloxime; D006859:Hydrogen
keywords: buckypaper; cobaloximes; dihydrogen evolution; electrocatalysis; polymers