Folic acid conjugation of magnetite nanoparticles using pulsed electrohydraulic discharges

Vladimer Mikelashvili*, Shalva Kekutia, Jano Markhulia, Liana Saneblidze, Zaur Jabua, László Almásy, Manfred Kriechbaum

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


The sonochemical coprecipitation reaction with moderate ultrasound irradiation in a low vacuum environment was used to obtain aqueous colloidal suspensions of iron oxide nanoparticles (IONPs). The synthesized magnetite nanoparticles were conjugated directly by folic acid using electrohydraulic discharges as a processing technique before modification of the surface of the nanoparticles. Electrohydraulic discharges were applied in two operational modes with high and low power pulsed direct currents between the electrodes. The physical and chemical properties of the obtained samples were studied using X-ray powder diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), dynamic light scattering (DLS) and small angle X-ray scattering (SAXS). The investigation proved an inverse cubic spinel structure of magnetite with folic acid attachment to the magnetite surface (mean crystallite diameter in the samples, D, ranges 25-31 nm by XRD and SAXS). It was found that the processing with electrohydraulic discharges increased the colloidal stability of the folic acid-magnetite nanoparticle dispersions.

Original languageEnglish
Pages (from-to)181-194
Number of pages14
JournalJournal of the Serbian Chemical Society
Issue number2
Publication statusPublished - 25 Feb 2021


  • Iron oxide nanoparticles
  • Pulsed arc discharge
  • Sonochemical coprecipitation
  • Surface functionalization

ASJC Scopus subject areas

  • Chemistry(all)

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