Electrochemical Oxidation of Carbon Monoxide on Unsupported Gold Nanospheres in Alkaline Medium
| Autor: | K. Boniface Kokoh, Teko W. Napporn, Nolwenn Mayet, Karine Servat |
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| Přispěvatelé: | Institut de Chimie des Milieux et Matériaux de Poitiers (IC2MP), Université de Poitiers-Institut national des sciences de l'Univers (INSU - CNRS)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), The authors acknowledge financial support from the European Union (ERDF) and 'Région Nouvelle Aquitaine'. |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Inorganic chemistry
Oxide 02 engineering and technology engineering.material 010402 general chemistry Electrocatalyst Electrochemistry 01 natural sciences carbon monoxide chemistry.chemical_compound underpotential deposition electrocatalysis [CHIM]Chemical Sciences 021001 nanoscience & nanotechnology cyclic voltammetry 0104 chemical sciences chemistry Colloidal gold gold nanoparticles engineering Hydroxide Noble metal Cyclic voltammetry 0210 nano-technology Carbon monoxide |
| Zdroj: | Electrocatalysis Electrocatalysis, Springer, 2020, ⟨10.1007/s12678-020-00626-7⟩ |
| ISSN: | 1868-2529 1868-5994 |
| DOI: | 10.1007/s12678-020-00626-7⟩ |
| Popis: | International audience; Carbon monoxide (CO) is intensively studied as a model molecule for organics oxidation reaction or as a strong adsorbate on noble metal surfaces. In this work, quasi-spherical gold nanoparticles (AuNPs) prepared by a revisited Turkevich method were electrochemically characterized. Physical and electrochemical measurements demonstrated the presence of (111) and (110) facets. These unsupported NPs were used to study the effect of the upper potential limit and gold oxide formation on CO oxidation in alkaline medium. The results demonstrate that hydroxide species are crucial to oxidize CO, whereas the gold oxides species do not play a critical role. |
| Databáze: | OpenAIRE |
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