Отправить статью по E-mail NMR Relaxation Efficiency of Aqueous Solutions of Composite MgxZnyFe3−x−yO4 Nanoparticles
- Авторы: Bogachev Y.V.1, Nikitina A.V.1, Kostina A.A.1, Sabitova V.A.1, Pankov V.V.2, Shutava T.G.3, Petrova E.G.2, Kotsikau D.A.2, Natarov V.O.2, Livanovich K.S.3
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Учреждения:
- Department of Physics, Saint-Petersburg Electrotechnical University “LETI”
- Department of Chemistry, Belarusian State University
- Institute of Chemistry of New Materials, National Academy of Sciences of Belarus
- Выпуск: Том 48, № 7 (2017)
- Страницы: 715-722
- Раздел: Original Paper
- URL: https://journal-vniispk.ru/0937-9347/article/view/247736
- DOI: https://doi.org/10.1007/s00723-017-0889-6
- ID: 247736
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Аннотация
The results of proton nuclear magnetic resonance (NMR) relaxation measurements in aqueous solutions of MgxZnyFe3−x−yO4 magnetite-based composite magnetic nanoparticles (MNPs) are discussed. It is shown that their transverse relaxivity (relaxation efficiency) r2 is significantly higher than the longitudinal relaxivity r1 and depends on the magnetic nanoparticles composition and preparation method. A polyelectrolyte layer adsorbed on the nanoparticle surface increases both relaxivity values. The carbonate-synthesized MNPs possess higher values of r2 and r1 as compared with base-precipitated complex oxides. Relaxivity r2 is shown to be affected by stability of MNPs in aqueous solutions and the aggregation behavior apparently can be assessed through the NMR relaxation measurements.
Об авторах
Yu. Bogachev
Department of Physics, Saint-Petersburg Electrotechnical University “LETI”
Автор, ответственный за переписку.
Email: Yu.Bogachev@mail.ru
Россия, 5, prof. Popov St., Saint-Petersburg, 197376
A. Nikitina
Department of Physics, Saint-Petersburg Electrotechnical University “LETI”
Email: Yu.Bogachev@mail.ru
Россия, 5, prof. Popov St., Saint-Petersburg, 197376
A. Kostina
Department of Physics, Saint-Petersburg Electrotechnical University “LETI”
Email: Yu.Bogachev@mail.ru
Россия, 5, prof. Popov St., Saint-Petersburg, 197376
V. Sabitova
Department of Physics, Saint-Petersburg Electrotechnical University “LETI”
Email: Yu.Bogachev@mail.ru
Россия, 5, prof. Popov St., Saint-Petersburg, 197376
V. Pankov
Department of Chemistry, Belarusian State University
Email: Yu.Bogachev@mail.ru
Белоруссия, 4, Nezavisimosti Av., Minsk, 220030
T. Shutava
Institute of Chemistry of New Materials, National Academy of Sciences of Belarus
Email: Yu.Bogachev@mail.ru
Белоруссия, 36, F. Skaryna St., Minsk, 220141
E. Petrova
Department of Chemistry, Belarusian State University
Email: Yu.Bogachev@mail.ru
Белоруссия, 4, Nezavisimosti Av., Minsk, 220030
D. Kotsikau
Department of Chemistry, Belarusian State University
Email: Yu.Bogachev@mail.ru
Белоруссия, 4, Nezavisimosti Av., Minsk, 220030
V. Natarov
Department of Chemistry, Belarusian State University
Email: Yu.Bogachev@mail.ru
Белоруссия, 4, Nezavisimosti Av., Minsk, 220030
K. Livanovich
Institute of Chemistry of New Materials, National Academy of Sciences of Belarus
Email: Yu.Bogachev@mail.ru
Белоруссия, 36, F. Skaryna St., Minsk, 220141
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