Geodesic
Magnetic and photocatalytic properties of BiFeO$_3$ nanoparticles formed during the heat treatment of hydroxides coprecipitated in a microreactor with intense swirling flows
Nanosistemy: fizika, himiâ, matematika, Tome 15 (2024) no. 3, pp. 369-379.

Voir la notice de l'article provenant de la source Math-Net.Ru

In this work, hydroxide deposition in a microreactor with intensively swirling flows was used to obtain BiFeO$_3$, followed by heat treatment of co-precipitated bismuth and iron hydroxides. The study of the formation of nanocrystalline bismuth orthoferrite was carried out using a set of methods: EDXMA, TEM, XRD, $^{57}$Fe Mössbauer spectroscopy, DRS, etc. The photocatalytic activity and magnetic characteristics of the material were determined. It is shown that during heat treatment of hydroxide precipitation for 1 minute at a temperature of 530$^\circ$C, BiFeO$_3$ nanocrystals with an average crystallite size of 14 $\pm$ 7 nm are formed. It was found that the resulting BiFeO$_3$ nanopowder is represented by agglomerates of individual nanoparticles. The saturation magnetization and residual magnetization values of these bismuth orthoferrite nanoparticles are 2.31 and 0.48 emu/g, respectively. According to the DRS results, band gap energy for the samples calculated at 530, 515, and 500$^\circ$C were 1.82, 1.86, and 1.91 eV, respectively, which ensures strong absorption of visible light by the samples. The sample showed higher photocatalytic activity in the X-ray amorphous state compared with nanocrystalline BiFeO$_3$ in the process of Fenton-like discoloration of methyl violet under the action of visible light with reaction rate constants of the pseudo-first order 0.0256 and 0.0072 min$^{-1}$, respectively.
Keywords: microreactor with intensively swirling flows, nanocrystals, bismuth ferrite, Fenton-like reactions.
Mots-clés : nanoparticles, photocatalysis 
@article{NANO_2024_15_3_a7,
     author = {Olga V. Proskurina and Ksenia I. Babich and Kirill D. Martinson and Sofia M. Tikhanova and Vladimir N. Nevedomskiy and Valentin G. Semenov and Rufat Sh. Abiev and Victor V. Gusarov},
     title = {Magnetic and photocatalytic properties of {BiFeO}$_3$ nanoparticles formed during the heat treatment of hydroxides coprecipitated in a microreactor with intense swirling flows},
     journal = {Nanosistemy: fizika, himi\^a, matematika},
     pages = {369--379},
     publisher = {mathdoc},
     volume = {15},
     number = {3},
     year = {2024},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/NANO_2024_15_3_a7/}
}
TY  - JOUR
AU  - Olga V. Proskurina
AU  - Ksenia I. Babich
AU  - Kirill D. Martinson
AU  - Sofia M. Tikhanova
AU  - Vladimir N. Nevedomskiy
AU  - Valentin G. Semenov
AU  - Rufat Sh. Abiev
AU  - Victor V. Gusarov
TI  - Magnetic and photocatalytic properties of BiFeO$_3$ nanoparticles formed during the heat treatment of hydroxides coprecipitated in a microreactor with intense swirling flows
JO  - Nanosistemy: fizika, himiâ, matematika
PY  - 2024
SP  - 369
EP  - 379
VL  - 15
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/NANO_2024_15_3_a7/
LA  - en
ID  - NANO_2024_15_3_a7
ER  - 
%0 Journal Article
%A Olga V. Proskurina
%A Ksenia I. Babich
%A Kirill D. Martinson
%A Sofia M. Tikhanova
%A Vladimir N. Nevedomskiy
%A Valentin G. Semenov
%A Rufat Sh. Abiev
%A Victor V. Gusarov
%T Magnetic and photocatalytic properties of BiFeO$_3$ nanoparticles formed during the heat treatment of hydroxides coprecipitated in a microreactor with intense swirling flows
%J Nanosistemy: fizika, himiâ, matematika
%D 2024
%P 369-379
%V 15
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/NANO_2024_15_3_a7/
%G en
%F NANO_2024_15_3_a7
Olga V. Proskurina; Ksenia I. Babich; Kirill D. Martinson; Sofia M. Tikhanova; Vladimir N. Nevedomskiy; Valentin G. Semenov; Rufat Sh. Abiev; Victor V. Gusarov. Magnetic and photocatalytic properties of BiFeO$_3$ nanoparticles formed during the heat treatment of hydroxides coprecipitated in a microreactor with intense swirling flows. Nanosistemy: fizika, himiâ, matematika, Tome 15 (2024) no. 3, pp. 369-379. http://geodesic.mathdoc.fr/item/NANO_2024_15_3_a7/