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dc.date.accessioned | 2019-01-22T20:40:08Z | |
dc.date.available | 2019-01-22T20:40:08Z | |
dc.date.issued | 2018 | |
dc.identifier.issn | 1023-1935 | |
dc.identifier.uri | https://dspace.kpfu.ru/xmlui/handle/net/148207 | |
dc.description.abstract | © 2018, Pleiades Publishing, Ltd. Ultra-fine gold (<2 nm), silver (5 ± 2 nm), and palladium (<1–2 nm) nanoparticles stabilized in polyvinylpyrrolidone shell were synthesized in N,N-dimethylformamide, using molecular oxygen dissolved in the electrolyte as mediator, by the reduction of the metals’ ions and complexes at the controlled potential of the oxygen reduction to its radical-anion. Pd-nanoparticles showed high catalytic activity in the reactions of p-nitrophenol reduction and Suzuki cross-coupling. Long-term ageing of spherical Ag-nanoparticles for 60 days in the post- electrolysis solution resulted in their consolidation (up to 17 ± 5 nm; the average size of crystallites 7.5 (3) nm). Upon similar exposure of Au-nanoparticles for 15 days, V-shaped nanoparticles were formed (length 112 ± 53 nm, width 58 ± 22 nm, crystallites 20(2)–31(1) nm); upon the isolation, dispersing into ethanol, and exposure for 48 h, hexagonal nanoparticles (105 ± 29 nm) and polygons (56 ± 25 nm, crystallites 24(2)–51(1) nm; upon dispersing into water and exposure for 8 h, spherical nanoparticles (13 ± 8 nm, crystallites 7(1)–13.4(5) nm). Thus obtained nanoparticles are characterized by methods of cyclic voltammetry, dynamic light scattering, scanning and high resolution transmission electron microscopy, and X-ray powder diffraction. | |
dc.relation.ispartofseries | Russian Journal of Electrochemistry | |
dc.subject | electrosynthesis | |
dc.subject | gold | |
dc.subject | mediator | |
dc.subject | nanoparticles | |
dc.subject | oxygen | |
dc.subject | palladium | |
dc.subject | polyvinylpyrrolidone | |
dc.subject | silver | |
dc.title | Molecular Oxygen as Mediator in the Metal Nanoparticles’ Electrosynthesis in N,N-Dimethylformamide | |
dc.type | Article | |
dc.relation.ispartofseries-issue | 3 | |
dc.relation.ispartofseries-volume | 54 | |
dc.collection | Публикации сотрудников КФУ | |
dc.relation.startpage | 265 | |
dc.source.id | SCOPUS10231935-2018-54-3-SID85044764373 |