Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Ox/Red-controllable combustion synthesis of foam-like PrFeO3 nanopowders for effective photo-Fenton degradation of methyl violet. / Seroglazova, Anna S.; Lebedev, Lev A.; Chebanenko, Maria I.; Sklyarova, Anastasia S.; Buryanenko, Ivan V.; Semenov, Valentin G.; Popkov, Vadim I.
в: Advanced Powder Technology, Том 33, № 2, 103398, 01.02.2022.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Ox/Red-controllable combustion synthesis of foam-like PrFeO3 nanopowders for effective photo-Fenton degradation of methyl violet
AU - Seroglazova, Anna S.
AU - Lebedev, Lev A.
AU - Chebanenko, Maria I.
AU - Sklyarova, Anastasia S.
AU - Buryanenko, Ivan V.
AU - Semenov, Valentin G.
AU - Popkov, Vadim I.
N1 - Publisher Copyright: © 2021 The Society of Powder Technology Japan
PY - 2022/2/1
Y1 - 2022/2/1
N2 - Praseodymium orthoferrite nanopowders were synthesized by Red/Ox-controlled glycine-nitrate combustion followed by heat treatment. It was found that the temperature of PrFeO3 formation from amorphous combustion products varied from 612 °C to 647 °C, depending on the initial reaction solution. The purity, crystallite size, morphology and specific surface area of the samples were affected by the glycine-nitrate ratio (G/N). At nonstoichiometric G/N (more or less than 0.6), amorphous or low crystalline phases were formed. Also, at these ratios, nanopowders had the smallest crystallite size before (17.4–36.2 nm) and after (45.3–49.2 nm) heat treatment. All powders were characterized by developed porous morphology with a specific surface area of 2.9–11.9 m2/g and a band gap of 2.07–2.13 eV. The results of 57Fe Mössbauer spectroscopy confirmed magnetically ordered state of PrFeO3 nanocrystals with 1 mol % of amorphous component, associated with the combustion mode of a glycine-nitrate solution. The photocatalytic activity of PrFeO3 was evaluated by the rate of decomposition of methyl violet (MV) in the presence of peroxide under the action of visible light.
AB - Praseodymium orthoferrite nanopowders were synthesized by Red/Ox-controlled glycine-nitrate combustion followed by heat treatment. It was found that the temperature of PrFeO3 formation from amorphous combustion products varied from 612 °C to 647 °C, depending on the initial reaction solution. The purity, crystallite size, morphology and specific surface area of the samples were affected by the glycine-nitrate ratio (G/N). At nonstoichiometric G/N (more or less than 0.6), amorphous or low crystalline phases were formed. Also, at these ratios, nanopowders had the smallest crystallite size before (17.4–36.2 nm) and after (45.3–49.2 nm) heat treatment. All powders were characterized by developed porous morphology with a specific surface area of 2.9–11.9 m2/g and a band gap of 2.07–2.13 eV. The results of 57Fe Mössbauer spectroscopy confirmed magnetically ordered state of PrFeO3 nanocrystals with 1 mol % of amorphous component, associated with the combustion mode of a glycine-nitrate solution. The photocatalytic activity of PrFeO3 was evaluated by the rate of decomposition of methyl violet (MV) in the presence of peroxide under the action of visible light.
KW - Nanopowders
KW - Photo-Fenton-like reactions
KW - Photocatalysis
KW - Praseodymium orthoferrite
KW - Solution combustion synthesis
UR - http://www.scopus.com/inward/record.url?scp=85123736656&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/39df3436-a794-31c8-b825-30c13d68c16b/
U2 - 10.1016/j.apt.2021.103398
DO - 10.1016/j.apt.2021.103398
M3 - Article
AN - SCOPUS:85123736656
VL - 33
JO - Advanced Powder Technology
JF - Advanced Powder Technology
SN - 0921-8831
IS - 2
M1 - 103398
ER -
ID: 100802335