Hybrid nanoparticles based on cobalt ferrite and gold: Preparation and characterization | Научно-инновационный портал СФУ

Hybrid nanoparticles based on cobalt ferrite and gold: Preparation and characterization

Тип публикации: статья из журнала

Год издания: 2021

Идентификатор DOI: 10.3390/met11050705

Ключевые слова: anion-exchange resin precipitation, cofe2o4/au nanoparticles, hybrid nanoparticles, magnetic hysteresis loops, synthesis, toxicity, x-ray photoelectron spectroscopy

Аннотация: During the past few decades, hybrid nanoparticles (HNPs) based on a magnetic material and gold have attracted interest for applications in catalysis, diagnostics and nanomedicine. In this paper, magnetic CoFe2O4/Au HNPs with an average particle size of 20 nm, decorated with 2 nm gold clusters, were prepared using methionine as a reducer and an anchor between CoFe2O4 and gold. The methionine was used to grow the Au clusters to a solid gold shell (up to 10 gold deposition cycles). The obtained nanoparticles (NPs) were studied by X-Ray diffraction (XRD), transmis-sion electron microscopy (TEM), Fourier-transform infrared (FT-IR) spectroscopy, X-Ray photoelectron spectroscopy (XPS) and UV-vis spectroscopy techniques. The TEM images of the obtained HNPs showed that the surface of cobalt ferrite was covered with gold nanoclusters, the size of which slightly increased with an increase in the number of gold deposition cycles (from 2.12 ± 0.15 nm after 1 cycle to 2.46 ± 0.13 nm after 10 cycles). The density of the Au clusters on the cobalt ferrite surface insignificantly decreased during repeated stages of gold deposition: 21.4 ± 2.7 Au NPs/CoFe2O4 NP after 1 cycle, 19.0 ± 1.2 after 6 cycles and 18.0 ± 1.4 after 10 cycles. The magnetic measurements showed that the obtained HNPs possessed typical ferrimagnetic behavior, which corresponds to that of CoFe2O4 nanoparticles. The toxicity evaluation of the synthesized HNPs on Chlorella vulgaris indicated that they can be applied to biomedical applications such as magnetic hyperthermia, photothermal therapy, drug delivery, bioimaging and biosensing. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.

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Издание

Журнал: Metals

Выпуск журнала: Vol. 11, Is. 5

Номера страниц: 705

ISSN журнала: 20754701

Издатель: MDPI AG

Авторы

  • Saikova Svetlana (Siberian Fed Univ, Sch Nonferrous Met & Mat Sci, Krasnoyarsk 660041, Russia; Russian Acad Sci, Siberian Branch, Krasnoyarsk Sci Ctr, Fed Res Ctr,Inst Chem & Chem Technol, Krasnoyarsk 660036, Russia)
  • Pavlikov Alexander (Siberian Fed Univ, Sch Nonferrous Met & Mat Sci, Krasnoyarsk 660041, Russia)
  • Trofimova Tatyana (Siberian Fed Univ, Sch Nonferrous Met & Mat Sci, Krasnoyarsk 660041, Russia)
  • Mikhlin Yuri (Russian Acad Sci, Siberian Branch, Krasnoyarsk Sci Ctr, Fed Res Ctr,Inst Chem & Chem Technol, Krasnoyarsk 660036, Russia)
  • Karpov Denis (Siberian Fed Univ, Sch Nonferrous Met & Mat Sci, Krasnoyarsk 660041, Russia)
  • Asanova Anastasiya (Siberian Fed Univ, Sch Nonferrous Met & Mat Sci, Krasnoyarsk 660041, Russia; Krasnoyarsk State Agr Univ, Inst Agroecol Technol, Krasnoyarsk 660049, Russia)
  • Grigoriev Yuri (Siberian Fed Univ, Sch Nonferrous Met & Mat Sci, Krasnoyarsk 660041, Russia)
  • Volochaev Mikhail (Russian Acad Sci, Siberian Branch, Krasnoyarsk Sci Ctr, Fed Res Ctr,Kirensky Inst Phys, Krasnoyarsk 660036, Russia)
  • Samoilo Alexander (Siberian Fed Univ, Sch Nonferrous Met & Mat Sci, Krasnoyarsk 660041, Russia)
  • Zharkov Sergey M. (Siberian Fed Univ, Sch Nonferrous Met & Mat Sci, Krasnoyarsk 660041, Russia; Russian Acad Sci, Siberian Branch, Krasnoyarsk Sci Ctr, Fed Res Ctr,Kirensky Inst Phys, Krasnoyarsk 660036, Russia)
  • Velikanov Dmitry (Russian Acad Sci, Siberian Branch, Krasnoyarsk Sci Ctr, Fed Res Ctr,Kirensky Inst Phys, Krasnoyarsk 660036, Russia)

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