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Iron oxide nanoparticles synthesized by a glycine-modified coprecipitation method: Structure and magnetic properties / A. Omelyanchik, A. S. Kamzin, A. A. Valiullin [et al.] // Colloids Surf. A Physicochem. Eng. Asp. - 2022. - Vol. 647. - Ст. 129090, DOI 10.1016/j.colsurfa.2022.129090. - Cited References: 80. - This work was supported by the Russian Science Foundation grant No. 21-72-20158 . The study of the structure was carried out on the equipment of the Center Collective Use " Materials Science and Metallurgy " which was purchased with the financial support of the Russian Federation represented by the Ministry of Education and Science (No. 075-15-2021-696) . - ISSN 0927-7757
Кл.слова (ненормированные):
Magnetic nanoparticles -- Iron oxide -- Magnetite -- Maghemite -- Glycine -- Mossbauer spectroscopy -- Coprecipitation
Аннотация: Iron oxide magnetic nanoparticles (MNPs) are of interest in biomedicine and research owing to their moderate cytotoxicity and advanced properties, such as extensive surface-to-volume ratio and possibilities for tailoring their functionality through surface chemistry. To date, various approaches have been used for the synthesis of MNPs with controllable structural properties and various coatings to enhance their stability and functionality. This study describes a modified one-step method of coprecipitation in the presence of glycine allowing the production of particles with controllable size and in situ surface decoration. The effect of different glycine concentrations on the morphostructural and magnetic properties of iron oxide MNPs is studied. The particle size is reduced from 10.2 ± 0.3 to 7.2 ± 0.5 nm by increasing the glycine concentration from 0.06 up to 0.60 mol. The magnetic properties of obtained particles were tracked by SQUID magnetometry and Mossbauer spectroscopy. All samples of glycine capped iron oxide MNPs showed superparamagnetic behaviour at room temperature with maximal value of the saturation magnetization of 69 ± 4 Am2/kg. The results show the optimal concentration range of glycine which can be used in this method: a lower concertation than 0.15 mol does not affect the properties of obtained particles while higher concentrations than 0.3 mol lead to the reduction of magnetic properties (the saturation magnetisation reduces to 59 ± 3 Am2/kg when glycine concentration was 0.6 mol). The proposed economic and environment-friendly approach can be utilized to synthesise –NH2 functionalised MNPs for biomedical or wastewater treatment.

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Держатели документа:
Immanuel Kant Baltic Federal University, Kaliningrad, Russian Federation
Department of Chemistry and Industrial Chemistry (DCIC), University of Genova, Genova, Italy
Ioffe Institute of Russian Academy of Science (RAS), St. Petersburg, Russian Federation
Kazan Federal University, Kazan, Russian Federation
St. Petersburg State University, St. Petersburg, Russian Federation
Institute of Chemistry and Chemical Technology, Federal Research Center Siberian branch RAS, Krasnoyarsk, Russian Federation
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation
The National University of Science and Technology MISIS, Moscow, Russian Federation
Institute of Structure of Matter–CNR, Monterotondo Stazione, Rome, 00016, Italy

Доп.точки доступа:
Omelyanchik, A.; Kamzin, A. S.; Valiullin, A. A.; Semenov, V. G.; Vereshchagin, S. N.; Volochaev, M. N.; Волочаев, Михаил Николаевич; Dubrovskiy, A. A.; Дубровский, Андрей Александрович; Sviridova, T.; Kozenkov, I.; Dolan, E.; Peddis, D.; Sokolov, A. Е.; Соколов, Алексей Эдуардович; Rodionova, V.
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