Unusual Stabilization of Zinc Peroxide by Manganese Oxide: Mechanistic Understanding by Temperature-Dependent EPR Studies
1
Publication type: Journal Article
Publication date: 2019-07-18
scimago Q1
wos Q3
SJR: 0.914
CiteScore: 6.2
Impact factor: 3.2
ISSN: 19327447, 19327455
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
Physical and Theoretical Chemistry
General Energy
Abstract
Nanocrystalline zinc peroxide is passivated against further oxidation by the addition of minute, substoichiometric amounts of potassium permanganate, which also endows it with increased thermal stability. The oxidation state of manganese and the passivation mechanism are deciphered by a comparative electron paramagnetic resonance (EPR) study of the manganese-doped zinc peroxide nanoparticles and manganese oxide formed by reduction of permanganate by hydrogen peroxide as well as unmodified ZnO2 nanoparticles. Temperature-dependent in situ EPR studies at elevated temperatures allowed us to trace simultaneously the temperature-dependent changes in abundance of superoxide radicals and the formation of Mn(IV) species and also to identify Mn(III) species at cryotemperatures. We conclude that the passivation is caused by Mn(III) complexes that act as antioxidants removing superoxide radicals, which are abundant in zinc peroxide and even more so in the manganese-doped zinc peroxide.
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Total citations:
19
Citations from 2024:
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(47%)
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GOST
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Shames A. I. et al. Unusual Stabilization of Zinc Peroxide by Manganese Oxide: Mechanistic Understanding by Temperature-Dependent EPR Studies // Journal of Physical Chemistry C. 2019. Vol. 123. No. 34. pp. 20884-20892.
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Shames A. I., Lev O., Mikhaylov A., Medvedev A. G., Gun J., Prikhodchenko P. V. Unusual Stabilization of Zinc Peroxide by Manganese Oxide: Mechanistic Understanding by Temperature-Dependent EPR Studies // Journal of Physical Chemistry C. 2019. Vol. 123. No. 34. pp. 20884-20892.
Cite this
RIS
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TY - JOUR
DO - 10.1021/acs.jpcc.9b04523
UR - https://doi.org/10.1021/acs.jpcc.9b04523
TI - Unusual Stabilization of Zinc Peroxide by Manganese Oxide: Mechanistic Understanding by Temperature-Dependent EPR Studies
T2 - Journal of Physical Chemistry C
AU - Shames, Alexander I.
AU - Lev, Ovadia
AU - Mikhaylov, Alexey
AU - Medvedev, Alexander G.
AU - Gun, Jenny
AU - Prikhodchenko, Petr V.
PY - 2019
DA - 2019/07/18
PB - American Chemical Society (ACS)
SP - 20884-20892
IS - 34
VL - 123
SN - 1932-7447
SN - 1932-7455
ER -
Cite this
BibTex (up to 50 authors)
Copy
@article{2019_Shames,
author = {Alexander I. Shames and Ovadia Lev and Alexey Mikhaylov and Alexander G. Medvedev and Jenny Gun and Petr V. Prikhodchenko},
title = {Unusual Stabilization of Zinc Peroxide by Manganese Oxide: Mechanistic Understanding by Temperature-Dependent EPR Studies},
journal = {Journal of Physical Chemistry C},
year = {2019},
volume = {123},
publisher = {American Chemical Society (ACS)},
month = {jul},
url = {https://doi.org/10.1021/acs.jpcc.9b04523},
number = {34},
pages = {20884--20892},
doi = {10.1021/acs.jpcc.9b04523}
}
Cite this
MLA
Copy
Shames, Alexander I., et al. “Unusual Stabilization of Zinc Peroxide by Manganese Oxide: Mechanistic Understanding by Temperature-Dependent EPR Studies.” Journal of Physical Chemistry C, vol. 123, no. 34, Jul. 2019, pp. 20884-20892. https://doi.org/10.1021/acs.jpcc.9b04523.