TY - JOUR

T1 - Magnetic Manganese-Based Micromotors MnFe2O4@Fe3O4/graphite and Mn2O3@Fe2O3@Fe3O4/graphite for Organic Pollutant Degradation

AU - Kichatov, Boris

AU - Korshunov, Alexey

AU - Sudakov, Vladimir

AU - Golubkov, Alexandr

AU - Smovzh, Dmitriy

AU - Sakhapov, Salavat

AU - Skirda, Mikhail

N1 - Публикация для корректировки.

PY - 2023/12

Y1 - 2023/12

N2 - Wastewater pollution with organic compounds poses a serious threat to human health. One of the possible methods for solving these problems can be the use of micro/nanomotors. Among them, manganese-based micro/nanomotors have a number of important advantages related to high catalytic activity, powerful motion, and low cost. Due to their mobility, micro/nanomotors promote an increase in the intensity of mass transfer in the reacting system. When introducing ferromagnetic elements into manganese-based micro/nanomotors, it is possible not only to increase their motion speed, but also to make their motion more controllable. Herein, for the first time it demonstrates a synthesis method for MnFe2O4@Fe3O4/graphite and Mn2O3@Fe2O3@Fe3O4/graphite magnetic catalytic micromotors, which have remarkable photocatalytic properties. Micromotors are clusters of nanoparticles whose motion in a hydrogen peroxide solution in a non-uniform magnetic field is caused by the action of magnetic force and self-diffusiophoresis. Nanoparticles are synthesized by the plasma-arc method with subsequent annealing in the air. When changing the annealing temperature, the catalytic and magnetic properties of nanoparticles can vary within a wide range of values. Micromotors MnFe2O4@Fe3O4/graphite have the most optimal catalytic and magnetic properties. The results of the research show that these micromotors are effective catalysts in the decomposition of methylene blue.

AB - Wastewater pollution with organic compounds poses a serious threat to human health. One of the possible methods for solving these problems can be the use of micro/nanomotors. Among them, manganese-based micro/nanomotors have a number of important advantages related to high catalytic activity, powerful motion, and low cost. Due to their mobility, micro/nanomotors promote an increase in the intensity of mass transfer in the reacting system. When introducing ferromagnetic elements into manganese-based micro/nanomotors, it is possible not only to increase their motion speed, but also to make their motion more controllable. Herein, for the first time it demonstrates a synthesis method for MnFe2O4@Fe3O4/graphite and Mn2O3@Fe2O3@Fe3O4/graphite magnetic catalytic micromotors, which have remarkable photocatalytic properties. Micromotors are clusters of nanoparticles whose motion in a hydrogen peroxide solution in a non-uniform magnetic field is caused by the action of magnetic force and self-diffusiophoresis. Nanoparticles are synthesized by the plasma-arc method with subsequent annealing in the air. When changing the annealing temperature, the catalytic and magnetic properties of nanoparticles can vary within a wide range of values. Micromotors MnFe2O4@Fe3O4/graphite have the most optimal catalytic and magnetic properties. The results of the research show that these micromotors are effective catalysts in the decomposition of methylene blue.

KW - hybrid Mn-micromotors

KW - iron oxide

KW - magnetic properties

KW - manganese oxide

KW - pollutant removal

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85168392699&origin=inward&txGid=190e3296b94fa193bdf9975100cecff3

UR - https://www.mendeley.com/catalogue/7c0197e7-b874-3634-a82c-83825875efbc/

U2 - 10.1002/adsu.202300288

DO - 10.1002/adsu.202300288

M3 - Article

VL - 7

JO - Advanced Sustainable Systems

JF - Advanced Sustainable Systems

SN - 2366-7486

IS - 12

M1 - 2300288

ER -