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Dostęp zamkniętyCatalytic Activity of Anisotropic Gold Nanoplates towards Oxygen Reduction
| dc.abstract.en | Glassy carbon electrode (GCE) coated with anisotropic gold nanoplates (aAuNPs) was used for the study of oxygen reduction reaction (ORR) in 0.5 M sulfuric acid instead of bulk gold electrodes. The electrode cleaning/activation procedure lead to the removal of any charged and uncharged residues on the gold nanoplates, leaving the nanostructured surface highly active towards oxygen reduction. The advantages: much lower overpotential and larger current densities of oxygen reduction are ascribed to the unique nanostructures present on the carb on electrode surface-the gold nanoplates. They are rich in edges providing a large population of Au (100) sites with unsaturated coordination exposed to the solution, and catalytically active. Measurements performed using a rotating disc electrode, modified with the gold nanoplates, confirmed that ORR proceeds via two separate steps: oxygen is reduced to hydrogen peroxide, and the peroxide is further reduced in a two-electron reduction to water. |
| dc.affiliation | Uniwersytet Warszawski |
| dc.contributor.author | Bilewicz, Renata |
| dc.contributor.author | Kizling, Michał |
| dc.contributor.author | Opuchlik, Lidia Jagoda |
| dc.contributor.author | Bącal, Paweł |
| dc.date.accessioned | 2024-01-24T19:04:13Z |
| dc.date.available | 2024-01-24T19:04:13Z |
| dc.date.issued | 2019 |
| dc.description.finance | Nie dotyczy |
| dc.description.number | 10 |
| dc.description.volume | 31 |
| dc.identifier.doi | 10.1002/ELAN.201900382 |
| dc.identifier.issn | 1040-0397 |
| dc.identifier.uri | https://repozytorium.uw.edu.pl//handle/item/102750 |
| dc.language | eng |
| dc.pbn.affiliation | chemical sciences |
| dc.relation.ispartof | Electroanalysis |
| dc.relation.pages | 2048-2056 |
| dc.rights | ClosedAccess |
| dc.sciencecloud | nosend |
| dc.subject.en | anisotropic gold nanoplate |
| dc.subject.en | polycrystalline gold |
| dc.subject.en | electrocatalysis |
| dc.subject.en | oxygen electroreduction reaction |
| dc.subject.en | gold nanoparticle |
| dc.subject.en | roughened electrode surface |
| dc.subject.en | edge effect |
| dc.subject.en | rotating disc electrode |
| dc.title | Catalytic Activity of Anisotropic Gold Nanoplates towards Oxygen Reduction |
| dc.type | JournalArticle |
| dspace.entity.type | Publication |