Research output: Contribution to journal › Article › peer-review
The synthesis of novel heterojunction h-YbFeO3/o-YbFeO3photocatalyst with enhanced Fenton-like activity under visible-light. / Tikhanova, Sofia M.; Lebedev, Lev A.; Martinson, Kirill D.; Chebanenko, Maria I.; Buryanenko, Ivan V.; Semenov, Valentin G.; Nevedomskiy, Vladimir N.; Popkov, Vadim I.
In: New Journal of Chemistry, Vol. 45, No. 3, 21.01.2021, p. 1541-1550.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - The synthesis of novel heterojunction h-YbFeO3/o-YbFeO3photocatalyst with enhanced Fenton-like activity under visible-light
AU - Tikhanova, Sofia M.
AU - Lebedev, Lev A.
AU - Martinson, Kirill D.
AU - Chebanenko, Maria I.
AU - Buryanenko, Ivan V.
AU - Semenov, Valentin G.
AU - Nevedomskiy, Vladimir N.
AU - Popkov, Vadim I.
N1 - Funding Information: The reported study was funded by RFBR, project number 18-03-00414. Publisher Copyright: © The Royal Society of Chemistry and the Centre National de la Recherche Scientifique. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.
PY - 2021/1/21
Y1 - 2021/1/21
N2 - In this work, a simple solution combustion synthesis followed by heat treatment was proposed to produce nanocrystalline h-YbFeO3/o-YbFeO3 heterojunction and phase-pure o-YbFeO3. A detailed investigation on the formation process of h-YbFeO3 and o-YbFeO3 nanocrystals was carried out using a wide variety of methods, including EDS, SEM, PXRD, 57Fe Mössbauer spectroscopy, DRS. The most prospective samples of the h-YbFeO3/o-YbFeO3 nanocomposite and o-YbFeO3 nanopowder were examined towards the photo-Fenton decolorization of methyl violet (MV) under visible light. It was shown that the proposed approach allows for obtaining h-YbFeO3 and o-YbFeO3 nanocrystals with an average size of 15.7-21.1 nm and 41.1-65.5 nm, respectively, and with a specific surface area of up to 16 m2 g-1. It was found that the h-YbFeO3/o-YbFeO3 nanocomposite has a mesoporous structure and foam-like morphology, while the o-YbFeO3 nanopowder is non-porous and represented by agglomerates of individual nanoparticles with isometric morphology. Based on the DRS results, it was found that the band gap value was 2.05 eV and 2.16 eV for the h-YbFeO3/o-YbFeO3 and o-YbFeO3 samples, respectively, providing strong visible-light absorption of the samples. It was shown that the electron structure of the h-YbFeO3/o-YbFeO3 nanocomposite refers to I type heterojunction, leading to effective electron and hole transfer from o-YbFeO3 to h-YbFeO3 bands. This feature determines the higher photocatalytic activity of the h-YbFeO3/o-YbFeO3 nanocomposite as compared to pure o-YbFeO3 in the process of the Fenton-like decolorization of methyl violet under visible light with the pseudo-first-order reaction rate of 0.004848 min-1 and 0.003123 min-1, respectively. In conclusion, the mechanism of the photocatalytic decolorization of MV over the heterojunction nanocomposite was proposed to explain its high activity in the Fenton-like process. This journal is
AB - In this work, a simple solution combustion synthesis followed by heat treatment was proposed to produce nanocrystalline h-YbFeO3/o-YbFeO3 heterojunction and phase-pure o-YbFeO3. A detailed investigation on the formation process of h-YbFeO3 and o-YbFeO3 nanocrystals was carried out using a wide variety of methods, including EDS, SEM, PXRD, 57Fe Mössbauer spectroscopy, DRS. The most prospective samples of the h-YbFeO3/o-YbFeO3 nanocomposite and o-YbFeO3 nanopowder were examined towards the photo-Fenton decolorization of methyl violet (MV) under visible light. It was shown that the proposed approach allows for obtaining h-YbFeO3 and o-YbFeO3 nanocrystals with an average size of 15.7-21.1 nm and 41.1-65.5 nm, respectively, and with a specific surface area of up to 16 m2 g-1. It was found that the h-YbFeO3/o-YbFeO3 nanocomposite has a mesoporous structure and foam-like morphology, while the o-YbFeO3 nanopowder is non-porous and represented by agglomerates of individual nanoparticles with isometric morphology. Based on the DRS results, it was found that the band gap value was 2.05 eV and 2.16 eV for the h-YbFeO3/o-YbFeO3 and o-YbFeO3 samples, respectively, providing strong visible-light absorption of the samples. It was shown that the electron structure of the h-YbFeO3/o-YbFeO3 nanocomposite refers to I type heterojunction, leading to effective electron and hole transfer from o-YbFeO3 to h-YbFeO3 bands. This feature determines the higher photocatalytic activity of the h-YbFeO3/o-YbFeO3 nanocomposite as compared to pure o-YbFeO3 in the process of the Fenton-like decolorization of methyl violet under visible light with the pseudo-first-order reaction rate of 0.004848 min-1 and 0.003123 min-1, respectively. In conclusion, the mechanism of the photocatalytic decolorization of MV over the heterojunction nanocomposite was proposed to explain its high activity in the Fenton-like process. This journal is
KW - MAGNETIC-PROPERTIES
KW - SPIN REORIENTATION
KW - LNFEO(3) LN
KW - NANOPARTICLES
KW - NANOCRYSTALS
KW - YBFEO3
KW - DEGRADATION
KW - COMPOSITE
KW - YFEO3
KW - PR
UR - http://www.scopus.com/inward/record.url?scp=85100076253&partnerID=8YFLogxK
U2 - 10.1039/d0nj04895j
DO - 10.1039/d0nj04895j
M3 - Article
AN - SCOPUS:85100076253
VL - 45
SP - 1541
EP - 1550
JO - New Journal of Chemistry
JF - New Journal of Chemistry
SN - 1144-0546
IS - 3
ER -
ID: 75122185