Synthesis and characterization of core–shell magnetic nanoparticles nife2 o4 @au | Научно-инновационный портал СФУ

Synthesis and characterization of core–shell magnetic nanoparticles nife2 o4 @au

Тип публикации: статья из журнала

Год издания: 2020

Идентификатор DOI: 10.3390/met10081075

Ключевые слова: magnetic circular dichroism, nickel ferrite nanoparticles, nife2 o4 @au core–shell nanoparticles, synthesis, x-ray photoelectron spectroscopy

Аннотация: In this study, NiFe2 O4 @Au core–shell nanoparticles were prepared by the direct reduction of gold on the magnetic surface using amino acid methionine as a reducer and a stabilizing agent simultaneously. The obtained nanoparticles after three steps of gold deposition had an average size of about 120 nm. The analysis of particles was performed by X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectroscopy, and UV-Vis spectroscopy techniques. The results indicate successful synthesis of core–shell particles with the magnetic core, which consists of a few agglomerated nickel ferrite crystals with an average size 25.2 ± 2.0 nm, and the thick gold shell consists of fused Au0 nanoparticles (NPs). Magnetic properties of the obtained nanoparticles were examined with magnetic circular dichroism. It was shown that the magnetic behavior of NiFe2 O4 @Au NPs is typical for superparamagnetic NPs and corresponds to that for NiFe2 O4 NPs without a gold shell. The results indicate the successful synthesis of core–shell particles with the magnetic nickel ferrite core and thick gold shell, and open the potential for the application of the investigated hybrid nanoparticles in hyperthermia, targeted drug delivery, magnetic resonance imaging, or cell separation. The developed synthesis strategy can be extended to other metal ferrites and iron oxides. © 2020 by the authors. Licensee MDPI, Basel, Switzerland.

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Издание

Журнал: Metals

Выпуск журнала: Vol. 10, Is. 8

Номера страниц: 1-13

ISSN журнала: 20754701

Авторы

  • Saykova Diana (Siberian Fed Univ, Sch Nonferrous Met & Mat Sci, Krasnoyarsk 660041, Russia)
  • Saikova Svetlana (Siberian Fed Univ, Sch Nonferrous Met & Mat Sci, Krasnoyarsk 660041, Russia; Russian Acad Sci, Siberian Branch, Inst Chem & Chem Technol, Fed Res Ctr,Krasnoyarsk Sci Ctr, Krasnoyarsk 660036, Russia)
  • Mikhlin Yuri (Russian Acad Sci, Siberian Branch, Inst Chem & Chem Technol, Fed Res Ctr,Krasnoyarsk Sci Ctr, Krasnoyarsk 660036, Russia)
  • Panteleeva Marina (Russian Acad Sci, Siberian Branch, Inst Chem & Chem Technol, Fed Res Ctr,Krasnoyarsk Sci Ctr, Krasnoyarsk 660036, Russia)
  • Ivantsov Ruslan (Russian Acad Sci, Kirensky Inst Phys, Fed Res Ctr, Krasnoyarsk Sci Ctr,Siberian Branch, Krasnoyarsk 660036, Russia)
  • Belova Elena (Siberian Fed Univ, Sch Nonferrous Met & Mat Sci, Krasnoyarsk 660041, Russia)

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