Crystallization of Magnetic Iron Oxide Nanoparticles during Chemical Synthesis from Iron Salt Solutions with Exposure to Ultrasound
- Авторлар: Nikolaev A.1,2, Kovalenko A.1, Frolov K.3, Kopitsa G.1,4, Baranchikov A.5, Shilova O.1,6
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Мекемелер:
- Grebenshchikov Institute of Silicate Chemistry, Russian Academy of Sciences
- St. Petersburg State University
- Shubnikov Institute of Crystallography, Russian Academy of Sciences
- National Research Center Kurchatov Institute
- Kurnakov Institute of General and Inorganic Chemistry
- St. Petersburg State Electrotechnical University
- Шығарылым: Том 97, № 7 (2023)
- Беттер: 1050-1055
- Бөлім: ФИЗИЧЕСКАЯ ХИМИЯ НАНОКЛАСТЕРОВ, СУПРАМОЛЕКУЛЯРНЫХ СТРУКТУР И НАНОМАТЕРИАЛОВ
- URL: https://journals.rcsi.science/0044-4537/article/view/136641
- DOI: https://doi.org/10.31857/S0044453723070191
- EDN: https://elibrary.ru/SLPMSS
- ID: 136641
Дәйексөз келтіру
Аннотация
Iron oxide nanopowders are synthesized via chemical precipitation. It is shown that synthesis produces an iron oxide phase with a magnetite structure (either a magnetite–maghemite solid solution or a mixture of this solid solution and goethite). The sizes of the CSR and particles for the main phase are ~10–20 nm. The synthesized iron oxide powders have developed surfaces, specific surface area SBET ≈ 92 and 117 m2/g, and identical fairly large specific pore volumes (VP/P0→0.99/0→0.99 = 0.35 cm3/g). It is shown that additional in situ ultrasonic treatment of the magnetic iron oxide nanoparticles in the mother liquor results in abrupt oxidation of iron(II) ions and creates a nonmagnetic impurity phase of goethite.
Негізгі сөздер
Авторлар туралы
A. Nikolaev
Grebenshchikov Institute of Silicate Chemistry, Russian Academy of Sciences; St. Petersburg State University
Email: floijan@gmail.com
199155, St. Petersburg, Russia; 199034, St. Petersburg, Russia
A. Kovalenko
Grebenshchikov Institute of Silicate Chemistry, Russian Academy of Sciences
Email: floijan@gmail.com
199155, St. Petersburg, Russia
K. Frolov
Shubnikov Institute of Crystallography, Russian Academy of Sciences
Email: floijan@gmail.com
119333, Moscow, Russia
G. Kopitsa
Grebenshchikov Institute of Silicate Chemistry, Russian Academy of Sciences; National Research Center Kurchatov Institute
Email: floijan@gmail.com
119333, Moscow, Russia; 188300, Gatchina, Leningrad oblast, Russia
A. Baranchikov
Kurnakov Institute of General and Inorganic Chemistry
Email: floijan@gmail.com
119991, Moscow, Russia
O. Shilova
Grebenshchikov Institute of Silicate Chemistry, Russian Academy of Sciences; St. Petersburg State Electrotechnical University
Хат алмасуға жауапты Автор.
Email: floijan@gmail.com
199155, St. Petersburg, Russia; 197022, St. Petersburg, Russia
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