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Pàgina inicial > Articles > Articles publicats > Nickel iron diselenide for highly efficient and selective electrocatalytic conversion of methanol to formate |
Data: | 2021 |
Resum: | The electro-oxidation of methanol to formate is an interesting example of the potential use of renewable energies to add value to a biosourced chemical commodity. Additionally, methanol electro-oxidation can replace the sluggish oxygen evolution reaction when coupled to hydrogen evolution or to the electroreduction of other biomass-derived intermediates. But the cost-effective realization of these reaction schemes requires the development of efficient and low-cost electrocatalysts. Here, a noble metal-free catalyst, Ni FeSe nanorods, with a high potential for an efficient and selective methanol conversion to formate is demonstrated. At its optimum composition, NiFeSe, this diselenide is able to produce 0. 47 mmol cm h of formate at 50 mA cm with a Faradaic conversion efficiency of 99%. Additionally, this noble-metal-free catalyst is able to continuously work for over 50 000 s with a minimal loss of efficiency, delivering initial current densities above 50 mA cm and 2. 2 A mg in a 1. 0 m KOH electrolyte with 1. 0 m methanol at 1. 5 V versus reversible hydrogen electrode. This work demonstrates the highly efficient and selective methanol-to-formate conversion on Ni-based noble-metal-free catalysts, and more importantly it shows a very promising example to exploit the electrocatalytic conversion of biomass-derived chemicals. |
Ajuts: | European Commission 754510 Ministerio de Ciencia e Innovación RTI2018-093996-B-C31 Ministerio de Economía y Competitividad ENE2017-85087-C3 Ministerio de Economía y Competitividad ENE2016-77798-C4-3-R Ministerio de Economía y Competitividad SEV-2013-0295 Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-327 Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-128 |
Nota: | Altres ajuts: IREC and ICN2 are funded by the CERCA Programme/Generalitat de Catalunya. Part of the present work has been performed in the framework of Universitat Autònoma de Barcelona Materials Science PhD program. J.L. is grateful to ICREA Academia program. |
Drets: | Tots els drets reservats. |
Llengua: | Anglès |
Document: | Article ; recerca ; Versió sotmesa a revisió |
Matèria: | Biomethanol ; Biorefinery ; Electrocatalysis ; Formate ; Formic acid ; Methanol oxidation reaction ; Selenide |
Publicat a: | Small, Vol. 17, issue 6 (Feb. 2021) , art. 2006623, ISSN 1613-6829 |
Preprint 25 p, 2.6 MB |