Enhancing Hydrogen Evolution Activity of Au(111) in Alkaline Media through Molecular Engineering of a 2D Polymer.

Autor: Alexa P; Max Planck Institute for Solid State Research, Heisenbergstrasse 1, 70569, Stuttgart, Germany., Lombardi JM; Instituto de Física Rosario and Universidad Nacional de Rosario, CONICET-UNR, S2000EZO, Rosario, Argentina., Abufager P; Instituto de Física Rosario and Universidad Nacional de Rosario, CONICET-UNR, S2000EZO, Rosario, Argentina., Busnengo HF; Instituto de Física Rosario and Universidad Nacional de Rosario, CONICET-UNR, S2000EZO, Rosario, Argentina., Grumelli D; Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, CONICET, 1900, La Plata, Argentina., Vyas VS; Max Planck Institute for Solid State Research, Heisenbergstrasse 1, 70569, Stuttgart, Germany.; Present address: Department of Chemistry, Marquette University, Milwaukee, WI, 53233, USA., Haase F; Max Planck Institute for Solid State Research, Heisenbergstrasse 1, 70569, Stuttgart, Germany.; Present address: Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University, iCeMS Research Bldg, Yoshida, Sakyo-ku, Kyoto, 606-8501, Japan., Lotsch BV; Max Planck Institute for Solid State Research, Heisenbergstrasse 1, 70569, Stuttgart, Germany.; Department of Chemistry, University of Munich (LMU), Butenandtstrasse 5-13, 81377, München, Germany., Gutzler R; Max Planck Institute for Solid State Research, Heisenbergstrasse 1, 70569, Stuttgart, Germany., Kern K; Max Planck Institute for Solid State Research, Heisenbergstrasse 1, 70569, Stuttgart, Germany.; Institut de Physique, École Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland.
Jazyk: angličtina
Zdroj: Angewandte Chemie (International ed. in English) [Angew Chem Int Ed Engl] 2020 May 25; Vol. 59 (22), pp. 8411-8415. Date of Electronic Publication: 2020 Mar 18.
DOI: 10.1002/anie.201915855
Abstrakt: The electrochemical splitting of water holds promise for the storage of energy produced intermittently by renewable energy sources. The evolution of hydrogen currently relies on the use of platinum as a catalyst-which is scarce and expensive-and ongoing research is focused towards finding cheaper alternatives. In this context, 2D polymers grown as single layers on surfaces have emerged as porous materials with tunable chemical and electronic structures that can be used for improving the catalytic activity of metal surfaces. Here, we use designed organic molecules to fabricate covalent 2D architectures by an Ullmann-type coupling reaction on Au(111). The polymer-patterned gold electrode exhibits a hydrogen evolution reaction activity up to three times higher than that of bare gold. Through rational design of the polymer on the molecular level we engineered hydrogen evolution activity by an approach that can be easily extended to other electrocatalytic reactions.
(© 2020 The Authors. Published by Wiley-VCH Verlag GmbH & Co. KGaA.)
Databáze: MEDLINE
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