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Open AccessArticle

Microwave-Assisted Synthesis of Water-Dispersible Humate-Coated Magnetite Nanoparticles: Relation of Coating Process Parameters to the Properties of Nanoparticles

1
Laboratory of Development and Study of Polyfunctional Catalysts, N.D. Zelinsky Institute of Organic Chemistry RAS, 47 Leninsky prosp, Moscow 119991, Russia
2
Laboratory of Nanochemistry and Ecology, National University of Science and Technology MISiS, 4 Leninsky prosp., Moscow 119049, Russia
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Laboratory of Radiation-Induced Chemical Transformations of Materials, A.N. Frumkin Institute of Physical Chemistry and Electrochemistry RAS, 31 Leninsky Prospect, bldg. 4, Moscow 119071, Russia
4
Laboratory of Ecological Chemistry, Chemistry Department, M.V. Lomonosov Moscow State University, 1 Leninskie Gory, bldg. 3, Moscow 119991, Russia
*
Authors to whom correspondence should be addressed.
Nanomaterials 2020, 10(8), 1558; https://doi.org/10.3390/nano10081558
Received: 15 June 2020 / Revised: 23 July 2020 / Accepted: 6 August 2020 / Published: 8 August 2020
Nowadays, there is a demand in the production of nontoxic multifunctional magnetic materials possessing both high colloidal stability in water solutions and high magnetization. In this work, a series of water-dispersible natural humate-polyanion coated superparamagnetic magnetite nanoparticles has been synthesized via microwave-assisted synthesis without the use of inert atmosphere. An impact of a biocompatible humate-anion as a coating agent on the structural and physical properties of nanoparticles has been established. The injection of humate-polyanion at various synthesis stages leads to differences in the physical properties of the obtained nanomaterials. Depending on the synthesis protocol, nanoparticles are characterized by improved monodispersity, smaller crystallite and grain size (up to 8.2 nm), a shift in the point of zero charge (6.4 pH), enhanced colloidal stability in model solutions, and enhanced magnetization (80 emu g−1). View Full-Text
Keywords: iron oxides; magnetite; humic substances; microwave synthesis; hydrophilic coating iron oxides; magnetite; humic substances; microwave synthesis; hydrophilic coating
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MDPI and ACS Style

Kostyukhin, E.M.; Nissenbaum, V.D.; Abkhalimov, E.V.; Kustov, A.L.; Ershov, B.G.; Kustov, L.M. Microwave-Assisted Synthesis of Water-Dispersible Humate-Coated Magnetite Nanoparticles: Relation of Coating Process Parameters to the Properties of Nanoparticles. Nanomaterials 2020, 10, 1558. https://doi.org/10.3390/nano10081558

AMA Style

Kostyukhin EM, Nissenbaum VD, Abkhalimov EV, Kustov AL, Ershov BG, Kustov LM. Microwave-Assisted Synthesis of Water-Dispersible Humate-Coated Magnetite Nanoparticles: Relation of Coating Process Parameters to the Properties of Nanoparticles. Nanomaterials. 2020; 10(8):1558. https://doi.org/10.3390/nano10081558

Chicago/Turabian Style

Kostyukhin, Egor M.; Nissenbaum, Vera D.; Abkhalimov, Evgeny V.; Kustov, Alexander L.; Ershov, Boris G.; Kustov, Leonid M. 2020. "Microwave-Assisted Synthesis of Water-Dispersible Humate-Coated Magnetite Nanoparticles: Relation of Coating Process Parameters to the Properties of Nanoparticles" Nanomaterials 10, no. 8: 1558. https://doi.org/10.3390/nano10081558

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