In situ modification of Fe and Ni magnetic nanopowders produced by the electrical explosion of wire / Beketov I. V.,Safronov A. P.,Bagazeev A. V.,Larranaga A.,Kurlyandskaya G. V.,Medvedev A. I. // JOURNAL OF ALLOYS AND COMPOUNDS. - 2014. - V. 586, l. 1. - P. S483-S488.

ISSN/EISSN:

0925-8388 / 1873-4669

Type:

Article

Abstract:

Iron and nickel spherical magnetic nanoparticles (MNPs) with mean diameter 50-80 nm were prepared by the electric explosion of wire. The advantage of this method is that it provides a very high production rate up to 200 g/h and requires low energy consumption of 25 kW h/kg. The as-prepared MNPs were modified in situ in hexane, toluene, chloroform, and the solutions of polystyrene in toluene, in an inert atmosphere at room temperature in order to provide both the stability at ambient conditions and tunable surface properties. Hexane was an inert liquid for Fe and Ni MNPs. In the case of toluene the surface of as-prepared Fe or Ni MNPs acted as a catalyst for the condensation reaction of aromatic organic compounds forming irregular polycyclic structures. The treatment with toluene led to the deposition of carbon and formation of ``hair-like{''} ordered structures on the surface of the MNPs. Chloroform chemically interacted with Fe MNPs, forming FeCl2. The treatment of MNPs with the solution of polystyrene in toluene resulted in the adsorption of polymer and the formation of 3-6 nm polymeric coatings on the surface. The obtained magnetic properties (like the magnetization value for Ni MNPs up to 52 emu/g and Fe MNPs up to 179 emu/g) at room temperature make these MNPs competitive candidates for nanocomposites for microwave and other technological applications. (C) 2013 Elsevier B. V. All rights reserved.

Author keywords:

Electric explosion of wire; Nanoparticles; Magnetic measurements; Surface modification NANOPARTICLES; CARBON; NANOCOMPOSITES; PARTICLES; GROWTH

DOI:

10.1016/j.jallcom.2013.01.152

Web of Science ID:

ISI:000328188800104

Соавторы в МНС:

Другие поля

Поле	Значение
Month	FEB 15
Publisher	ELSEVIER SCIENCE SA
Address	PO BOX 564, 1001 LAUSANNE, SWITZERLAND
Language	English
EISSN	1873-4669
Keywords-Plus	NANOPARTICLES; CARBON; NANOCOMPOSITES; PARTICLES; GROWTH
Research-Areas	Chemistry; Materials Science; Metallurgy \& Metallurgical Engineering
Web-of-Science-Categories	Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy \& Metallurgical Engineering
Author-Email	beketov@iep.uran.ru safronov@iep.uran.ru bagazeev@iep.uran.ru aitor.larranaga@ehu.es galina.kurlyandskaya@usu.ru medtom@iep.uran.ru
ResearcherID-Numbers	Bagazeev, Aleksey/H-6011-2017
ORCID-Numbers	Bagazeev, Aleksey/0000-0002-9112-5954 Kurlyandskaya, Galina/0000-0002-3712-1637
Funding-Acknowledgement	Spanish Government {[}RFBR 10-02-96015, UrFU 215, MAT2011-27573-C04]
Funding-Text	This work was supported by RFBR 10-02-96015, UrFU 215 and MAT2011-27573-C04 project of the Spanish Government grants. Selected measurements were performed at SGIker service of UPV-EHU. We thank S. M. Bhagat and I. Orue for special support.
Number-of-Cited-References	24
Usage-Count-Since-2013	36
Journal-ISO	J. Alloy. Compd.
Doc-Delivery-Number	268RS