Control of Particle Size via Chemical Composition: Structural and Magnetic Characterization of Ni-Co Alloy Nanoparticles Encapsulated in Lamellar Mixed Oxides | Sciact - CRIS-system of Boreskov Institute of Catalysis

Control of Particle Size via Chemical Composition: Structural and Magnetic Characterization of Ni-Co Alloy Nanoparticles Encapsulated in Lamellar Mixed Oxides Full article

Conference

Workshop on Innovative Applications of Layered Materials: from Catalysis to Nanotechnology
01-02 Sep 2006 , Alessandria

Journal

Microporous and Mesoporous Materials
ISSN: 1387-1811 , E-ISSN: 1873-3093

Output data

Year: 2008, Volume: 107, Number: 1-2, Pages: 202-211 Pages count : 10 DOI: 10.1016/j.micromeso.2007.05.026

Tags

Ferromagnetic resonance, Layered double hydroxide, Nanoparticles, Small angle X-ray scattering, Superparamagnetism

Authors

Tarasov K.A. ^1,3 , Isupov V.P. ¹ , Bokhonov B.B. ¹ , Gaponov Y.A. ¹ , Tolochko B.P. ¹ , Yulikov M.M. ² , Yudanov V.F. ² , Davidson A. ³ , Beaunier P. ³ , Marceau E. ³ , Che M. ³

Affiliations

1	Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch of the Russian Academy of Sciences, ul. Kutateladze 18, Novosibirsk 630128, Russia
2	Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences, pr. Akademika Lavtrentieva 5, Novosibirsk 630090, Russia
3	Laboratoire de Reactivite de Surface, UMR 7609 - CNRS, Universite Pierre et Marie Curie-Paris 6, 4 Place Jussieu, 75252 Paris Cedex 05, France

Funding (3)

1	The Ministry of Education and Science of the Russian Federation	2006-RI-111.0/002/110
2	Russian Science Support Foundation
3	Minister of National Education Youth and Sport

Nanoparticles of Co–Ni alloys were prepared by thermal decomposition of layered double hydroxides (LDH) containing co-intercalated complexes of two metals. The precursor compounds [LiAl2(OH)6]2{Ni1xCox(EDTA)} Æ 4H2O (where EDTA is ethylenediaminetetraacetate) obtained by anion exchange from [LiAl2(OH)6]Cl Æ 1.5H2O were treated at 450 C in vacuum. The microstructure of the thermal products was studied using local (TEM, SAED, EDX) as well as integral (XRD, SAXS) methods. It was found that Ni–Co alloy nanoparticles are formed uniformly dispersed in the carbonized matrix of lamellar mixed oxides, and the increase of the relative cobalt content in Ni1xCox from x = 0 to 0.86 leads to gradual enlargement of the average alloy particle size from 9 to 16 nm. According to magnetic measurements by SQUID magnetometry and FMR, all alloys, except Ni0.14Co0.86, are superparamagnetic at room temperature. The results on particle size obtained by different techniques are in good agreement. The variation of nanoparticle size via chemical composition in alloys and the use of LDH intercalation matrices is a promising way to synthesize nanocomposites with target properties.

Tarasov K.A. , Isupov V.P. , Bokhonov B.B. , Gaponov Y.A. , Tolochko B.P. , Yulikov M.M. , Yudanov V.F. , Davidson A. , Beaunier P. , Marceau E. , Che M.
Control of Particle Size via Chemical Composition: Structural and Magnetic Characterization of Ni-Co Alloy Nanoparticles Encapsulated in Lamellar Mixed Oxides
Microporous and Mesoporous Materials. 2008. V.107. N1-2. P.202-211. DOI: 10.1016/j.micromeso.2007.05.026 WOS Scopus РИНЦ ANCAN OpenAlex

Submitted:	Jan 20, 2007
Accepted:	May 7, 2007
Published online:	Jul 23, 2007
Published print:	Jan 1, 2008

Web of science:	WOS:000251870200024
Scopus:	2-s2.0-36049007086
Elibrary:	13578551
Chemical Abstracts:	2007:1318583
Chemical Abstracts (print):	149:484969
OpenAlex:	W2065567852

DB	Citing
Web of science	11
Scopus	11
Elibrary	11
OpenAlex	11