| dc.creator | Hötger, Diana | |
| dc.creator | Etzkorn, Markus | |
| dc.creator | Morchutt, Claudius | |
| dc.creator | Wurster, Benjamin | |
| dc.creator | Dreiser, Jan | |
| dc.creator | Stepanow, Sebastian | |
| dc.creator | Grumelli, Doris Elda | |
| dc.creator | Gutzler, Rico | |
| dc.creator | Kern, Klaus | |
| dc.date | 2019 | |
| dc.date | 2022-03-14T12:58:08Z | |
| dc.date.accessioned | 2023-07-15T04:56:59Z | |
| dc.date.available | 2023-07-15T04:56:59Z | |
| dc.identifier | http://sedici.unlp.edu.ar/handle/10915/132485 | |
| dc.identifier | issn:1463-9084 | |
| dc.identifier | issn:1463-9076 | |
| dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/7471506 | |
| dc.description | Transition metal atoms stabilised by organic ligands or as oxides exhibit promising catalytic activity for the electrocatalytic reduction and evolution of oxygen. Built-up from earth-abundant elements, they offer affordable alternatives to precious-metal based catalysts for application in fuel cells and electrolysers. For the understanding of a catalyst's activity, insight into its structure on the atomic scale is of highest importance, yet commonly challenging to experimentally access. Here, the structural integrity of a bimetallic iron tetrapyridylporphyrin with co-adsorbed cobalt electrocatalyst on Au(111) is investigated using scanning tunneling microscopy and X-ray absorption spectroscopy. Topographic and spectroscopic characterization reveals structural changes of the molecular coordination network after oxygen reduction, and its decomposition and transformation into catalytically active Co/Fe (oxyhydr)oxide during oxygen evolution. The data establishes a structure–property relationship for the catalyst as a function of electrochemical potential and, in addition, highlights how the reaction direction of electrochemical interconversion between molecular oxygen and hydroxyl anions can have very different effects on the catalyst's structure. | |
| dc.description | Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas | |
| dc.format | application/pdf | |
| dc.format | 2587-2594 | |
| dc.language | en | |
| dc.rights | http://creativecommons.org/licenses/by-nc-sa/4.0/ | |
| dc.rights | Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) | |
| dc.subject | Química | |
| dc.subject | Catalysts | |
| dc.subject | Macrocyclic molecules | |
| dc.title | Stability of metallo-porphyrin networks under oxygen reduction and evolution conditions in alkaline media | |
| dc.type | Articulo | |
| dc.type | Articulo | |
