KFU. Card publication. Molecular Oxygen as Mediator in the Metal Nanoparticles' Electrosynthesis in N,N-Dimethylformamide

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FEDERAL UNIVERSITY

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MOLECULAR OXYGEN AS MEDIATOR IN THE METAL NANOPARTICLES' ELECTROSYNTHESIS IN N,N-DIMETHYLFORMAMIDE

Form of presentation

Articles in international journals and collections

Year of publication

2018

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Authors, employees of KFU

Ziganshina Albina Yulduzovna, author

Bibliographic description in the original language

V. V. Yanilkin, N. V. Nastapova, R. R. Fazleeva, G. R. Nasretdinova, E. D. Sultanova, A. Yu. Ziganshina, A. T. Gubaidullin, A. I. Samigullina, V. G. Evtyugin, V. V. Vorob'ev and Yu. N. Osin, Molecular Oxygen as Mediator in the Metal Nanoparticles' Electrosynthesis in N,N-Dimethylformamide // Russ. J. Electrochem. – 2018. – 54. – 265–282.

Annotation

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.

Keywords

nanoparticle, silver, gold

The name of the journal

RUSSIAN JOURNAL OF ELECTROCHEMISTRY

URL

https://link.springer.com/article/10.1134/S1023193518030102#citeas

Please use this ID to quote from or refer to the card

https://repository.kpfu.ru/eng/?p_id=262907&p_lang=2

Full metadata record

Field DC	Value	Language
dc.contributor.author	Ziganshina Albina Yulduzovna	ru_RU
dc.date.accessioned	2018-01-01T00:00:00Z	ru_RU
dc.date.available	2018-01-01T00:00:00Z	ru_RU
dc.date.issued	2018	ru_RU
dc.identifier.citation	V. V. Yanilkin, N. V. Nastapova, R. R. Fazleeva, G. R. Nasretdinova, E. D. Sultanova, A. Yu. Ziganshina, A. T. Gubaidullin, A. I. Samigullina, V. G. Evtyugin, V. V. Vorob'ev and Yu. N. Osin, Molecular Oxygen as Mediator in the Metal Nanoparticles' Electrosynthesis in N,N-Dimethylformamide // Russ. J. Electrochem. – 2018. – 54. – 265–282.	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=262907&p_lang=2	ru_RU
dc.description.abstract	RUSSIAN JOURNAL OF ELECTROCHEMISTRY	ru_RU
dc.description.abstract	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.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	nanoparticle	ru_RU
dc.subject	silver	ru_RU
dc.subject	gold	ru_RU
dc.title	Molecular Oxygen as Mediator in the Metal Nanoparticles' Electrosynthesis in N,N-Dimethylformamide	ru_RU
dc.type	Articles in international journals and collections	ru_RU