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Synthesis and Characterization of Citric Acid-Modified Iron Oxide Nanoparticles Prepared with Electrohydraulic Discharge Treatment

Chemical co-precipitation from ferrous and ferric salts at a 1:1.9 stoichiometric ratio in NH(4)OH base with ultrasonication (sonolysis) in a low vacuum environment has been used for obtaining colloidal suspensions of Fe(3)O(4) nanoparticles coated with citric acid. Before coating, the nanoparticles...

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Autores principales: Mikelashvili, Vladimer, Kekutia, Shalva, Markhulia, Jano, Saneblidze, Liana, Maisuradze, Nino, Kriechbaum, Manfred, Almásy, László
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9862667/
https://www.ncbi.nlm.nih.gov/pubmed/36676484
http://dx.doi.org/10.3390/ma16020746
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author Mikelashvili, Vladimer
Kekutia, Shalva
Markhulia, Jano
Saneblidze, Liana
Maisuradze, Nino
Kriechbaum, Manfred
Almásy, László
author_facet Mikelashvili, Vladimer
Kekutia, Shalva
Markhulia, Jano
Saneblidze, Liana
Maisuradze, Nino
Kriechbaum, Manfred
Almásy, László
author_sort Mikelashvili, Vladimer
collection PubMed
description Chemical co-precipitation from ferrous and ferric salts at a 1:1.9 stoichiometric ratio in NH(4)OH base with ultrasonication (sonolysis) in a low vacuum environment has been used for obtaining colloidal suspensions of Fe(3)O(4) nanoparticles coated with citric acid. Before coating, the nanoparticles were processed by electrohydraulic discharges with a high discharge current (several tens of amperes) in a water medium using a pulsed direct current. Magnetite nanoparticles were obtained with an average crystallite diameter D = 25–28 nm as obtained by XRD and particle sizes of 25 nm as measured by small-angle X-ray scattering. Magnetometry showed that all samples were superparamagnetic. The saturation magnetization for the citric acid covered samples after electrohydraulic processing showed higher value (58 emu/g) than for the directly coated samples (50 emu/g). Ultraviolet-visible spectroscopy and Fourier transform infrared spectroscopy showed the presence and binding of citric acid to the magnetite surface by chemisorption of carboxylate ions. Hydrodynamic sizes obtained from DLS and zeta potentials were 93 and 115 nm, −26 and −32 mV for the citric acid covered nanoparticles and 226 nm and 21 mV for the bare nanoparticles, respectively. The hydraulic discharge treatment resulted in a higher citric acid coverage and better particle dispersion. The developed method can be used in nanoparticle synthesis for biomedical applications.
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spelling pubmed-98626672023-01-22 Synthesis and Characterization of Citric Acid-Modified Iron Oxide Nanoparticles Prepared with Electrohydraulic Discharge Treatment Mikelashvili, Vladimer Kekutia, Shalva Markhulia, Jano Saneblidze, Liana Maisuradze, Nino Kriechbaum, Manfred Almásy, László Materials (Basel) Article Chemical co-precipitation from ferrous and ferric salts at a 1:1.9 stoichiometric ratio in NH(4)OH base with ultrasonication (sonolysis) in a low vacuum environment has been used for obtaining colloidal suspensions of Fe(3)O(4) nanoparticles coated with citric acid. Before coating, the nanoparticles were processed by electrohydraulic discharges with a high discharge current (several tens of amperes) in a water medium using a pulsed direct current. Magnetite nanoparticles were obtained with an average crystallite diameter D = 25–28 nm as obtained by XRD and particle sizes of 25 nm as measured by small-angle X-ray scattering. Magnetometry showed that all samples were superparamagnetic. The saturation magnetization for the citric acid covered samples after electrohydraulic processing showed higher value (58 emu/g) than for the directly coated samples (50 emu/g). Ultraviolet-visible spectroscopy and Fourier transform infrared spectroscopy showed the presence and binding of citric acid to the magnetite surface by chemisorption of carboxylate ions. Hydrodynamic sizes obtained from DLS and zeta potentials were 93 and 115 nm, −26 and −32 mV for the citric acid covered nanoparticles and 226 nm and 21 mV for the bare nanoparticles, respectively. The hydraulic discharge treatment resulted in a higher citric acid coverage and better particle dispersion. The developed method can be used in nanoparticle synthesis for biomedical applications. MDPI 2023-01-12 /pmc/articles/PMC9862667/ /pubmed/36676484 http://dx.doi.org/10.3390/ma16020746 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Mikelashvili, Vladimer
Kekutia, Shalva
Markhulia, Jano
Saneblidze, Liana
Maisuradze, Nino
Kriechbaum, Manfred
Almásy, László
Synthesis and Characterization of Citric Acid-Modified Iron Oxide Nanoparticles Prepared with Electrohydraulic Discharge Treatment
title Synthesis and Characterization of Citric Acid-Modified Iron Oxide Nanoparticles Prepared with Electrohydraulic Discharge Treatment
title_full Synthesis and Characterization of Citric Acid-Modified Iron Oxide Nanoparticles Prepared with Electrohydraulic Discharge Treatment
title_fullStr Synthesis and Characterization of Citric Acid-Modified Iron Oxide Nanoparticles Prepared with Electrohydraulic Discharge Treatment
title_full_unstemmed Synthesis and Characterization of Citric Acid-Modified Iron Oxide Nanoparticles Prepared with Electrohydraulic Discharge Treatment
title_short Synthesis and Characterization of Citric Acid-Modified Iron Oxide Nanoparticles Prepared with Electrohydraulic Discharge Treatment
title_sort synthesis and characterization of citric acid-modified iron oxide nanoparticles prepared with electrohydraulic discharge treatment
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9862667/
https://www.ncbi.nlm.nih.gov/pubmed/36676484
http://dx.doi.org/10.3390/ma16020746
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