Synthesis of Co-Ni Alloy Particles with the Structure of a Solid Substitution Solution by Precipitation in a Supercritical Carbon Dioxide | Sciact - CRIS-system of Boreskov Institute of Catalysis

Synthesis of Co-Ni Alloy Particles with the Structure of a Solid Substitution Solution by Precipitation in a Supercritical Carbon Dioxide Full article

Journal

Nanomaterials
, E-ISSN: 2079-4991

Output data

Year: 2022, Volume: 12, Number: 24, Article number : 4366, Pages count : 15 DOI: 10.3390/nano12244366

Tags

supercritical fluids; Co-Ni alloy; solid substitution solution

Authors

Nesterov Nikolay ¹ , Pakharukova Vera ¹ , Cherepanova Svetlana ¹ , Yakushkin Stanislav ¹ , Gerasimov Evgeniy ¹ , Balaev Dmitry ^2,3 , Semenov Sergei ^2,3 , Dubrovskii Andrey ^2,3 , Martyanov Oleg ¹

Affiliations

1	Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, 630090 Novosibirsk, Russia
2	Kirensky Institute of Physics, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, 660036 Krasnoyarsk, Russia
3	Institute of Engineering Physics and Radioelectronics, Siberian Federal University, 660041 Krasnoyarsk, Russia

Funding (1)

Russian Science Foundation

21-73-00213

Mixed Co-Ni bimetallic systems with the structure of a solid substitution solution have been synthesized using the supercritical antisolvent precipitation (SAS) method, which uses supercritical CO2 as an antisolvent. The systems obtained have been characterized in detail using X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), Fourier-transform infrared (FTIR) spectroscopy, and magnetostatic measurements. It has been found that Co-enriched systems have a defective hexagonal close-packed (hcp) structure, which was described by a model which embedded cubic fragments of packaging into a hexagonal close-packed (hcp) structure. It has been shown that an increase in water content at the precipitation stage leads to a decrease in the size of cubic fragments and a more uniform distribution of them in Co-enriched systems. It has also been shown that mixed systems have the greatest coercivity in the line of samples. Ni-enriched bimetallic systems have a cubic close-packed (ccp) structure with modified crystal lattice parameters.

Nesterov N. , Pakharukova V. , Cherepanova S. , Yakushkin S. , Gerasimov E. , Balaev D. , Semenov S. , Dubrovskii A. , Martyanov O.
Synthesis of Co-Ni Alloy Particles with the Structure of a Solid Substitution Solution by Precipitation in a Supercritical Carbon Dioxide
Nanomaterials. 2022. V.12. N24. 4366 :1-15. DOI: 10.3390/nano12244366 WOS Scopus РИНЦ AN PMID OpenAlex

Submitted:	Oct 31, 2022
Accepted:	Dec 2, 2022
Published print:	Dec 7, 2022
Published online:	Dec 7, 2022

Web of science:	WOS:000904510200001
Scopus:	2-s2.0-85144886521
Elibrary:	50361382
Chemical Abstracts:	2023:45076
PMID:	36558218
OpenAlex:	W4311858870

DB	Citing
Scopus	5
Web of science	5
Elibrary	4
OpenAlex	5