Physics of the Solid State, Journal Year: 2023, Volume and Issue: 65(1), P. 1 - 5
Published: Jan. 1, 2023
Language: Английский
Inorganic Chemistry Communications, Journal Year: 2024, Volume and Issue: 161, P. 111999 - 111999
Published: Jan. 6, 2024
Language: Английский
Citations
18
Colloids and Surfaces A Physicochemical and Engineering Aspects, Journal Year: 2023, Volume and Issue: 675, P. 132037 - 132037
Published: July 13, 2023
Language: Английский
Citations
40
Journal of Water Process Engineering, Journal Year: 2024, Volume and Issue: 64, P. 105587 - 105587
Published: June 8, 2024
Language: Английский
Citations
9
Journal of nano research, Journal Year: 2023, Volume and Issue: 81, P. 65 - 84
Published: Dec. 22, 2023
Nanoscale mixed ferrites with a spinel structure are highly versatile materials widely employed across diverse fields, including engineering, biomedicine, and ecology. This study explores the influence of pH on structure, morphology, electrophysical, mechanical properties CuFe 2 O 4 spinel, synthesized using sol-gel self-combustion method. The investigation reveals that level significantly impacts formation, even at gel formation stage, thereby shaping subsequent ferrite. X-ray diffraction (XRD) analysis demonstrates dominant phase (>90%) corresponds to cubic chemical formula , belonging Fd3m space group. Notably, reaction medium exerts profound distribution iron copper ions within octahedral tetrahedral sublattices structure. variation in cationic manifests notable changes ferrite's magnetic, mechanical, degradation properties. Furthermore, delves into impact as photocatalyst for degrading organic dyes through photo-Fenton process. It efficiency is closely related band gap width particle size. aimed determine how optical, magnetic characteristics nanosized being synthesized. were evaluated their photocatalytic abilities water. ferrite powders showcased remarkable dye capabilities via Degradation largely hinged size particles. most outcome was achieved sample P1, which had sizes averaging 12.14 nm. By unraveling complex relationship between pH, properties, this research enhances our understanding design optimization nanoscale ferrites.
Language: Английский
Citations
6
Journal of nano research, Journal Year: 2024, Volume and Issue: 84, P. 95 - 116
Published: Sept. 20, 2024
In this study, CuFe 2 O 4 nanoparticles with an average crystallite size of approximately 10 nm were produced using the sol-gel autocombustion method. The synthesis was conducted in presence polymers varying monomer counts, aiming to optimize magnetic properties for possible localized heating applications. Comprehensive characterization all samples X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FT-IR), and Mössbauer spectroscopy. All synthesized exhibited good colloidal stability, zeta potentials around -18.49mV, +3mV +24 +30 mV. Specific Absorption Rate (SAR) assessed calorimetric SAR values calculated both Initial Slope Box-Lucas methods. For sample citric acid, 12.6 W/g 13.23 W/g, respectively. polyethylene glycol, ranged from 3 7 W/g. parameters alternating field 33.3 kA/m 357 kHz.
Language: Английский
Citations
2
Journal of Molecular Structure, Journal Year: 2024, Volume and Issue: unknown, P. 140026 - 140026
Published: Sept. 1, 2024
Language: Английский
Citations
2
International Journal of Molecular Sciences, Journal Year: 2023, Volume and Issue: 24(14), P. 11838 - 11838
Published: July 24, 2023
Additive manufacturing and nanotechnology have been used as fundamental tools for the production of nanostructured parts with magnetic properties, expanding range applications in additive processes through tank photopolymerization. Magnetic cobalt ferrite (CoFe2O4) barium (BaFe12O19) nanoparticles (NPs) an average size distribution value (DTEM) 12 ± 2.95 nm 37 12.78 nm, respectively, were generated by hydroxide precipitation method. The dispersion NPs commercial resins (Anycubic Green IRIX White resin) was achieved mechanochemical reactions carried out agate mortar 20 min at room temperature, limited exposure to light. resulting product each reaction placed amber vials stored a box avoid light exposure. photopolymerization process only low concentrations (% w/w NPs/resin) since high did not result formation pieces, due refractive index ferrites. Raman spectroscopy final pieces showed presence without any apparent chemical changes. electron paramagnetic resonance (EPR) results demonstrated that their properties maintained altered during Although significant differences observed piece, we determined affect structure superparamagnetic behavior processing, successfully transferring 3D-printed piece.
Language: Английский
Citations
4
Ceramics International, Journal Year: 2024, Volume and Issue: unknown
Published: Oct. 1, 2024
Language: Английский
Citations
1
International Journal of Molecular Sciences, Journal Year: 2023, Volume and Issue: 24(22), P. 16458 - 16458
Published: Nov. 17, 2023
Mixed manganese-zinc ferrite nanoparticles coated with PEG were studied for their potential usefulness in MRI thermometry as temperature-sensitive contrast agents. Particles the form of an 8.5 nm core a 3.5 layer fabricated using newly developed, one-step method. The composition Mn0.48Zn0.46Fe2.06O4 was found to have strong thermal dependence magnetization temperature range between 5 and 50 °C. Nanoparticles suspended agar gel mimicking animal tissue showing non-significant impact on cell viability biological test NMR over same range. For concentration 0.017 mg/mL Fe, spin-spin relaxation time T2 increased from 3.1 8.3 ms, while longitudinal T1 shows moderate decrease 149.0 125.1 ms. A map phantom exposed radial gradient obtained by heating it 808 laser calculated weighted spin-echo differential MR images. Analysis maps yields thermal/spatial resolution 3.2 °C at distance 2.9 mm. experimental rate R2 data water protons compared those calculations theoretical model incorporating motion averaging regime.
Language: Английский
Citations
3
Фундаментальные проблемы современного материаловедения, Journal Year: 2023, Volume and Issue: 20(3), P. 329 - 337
Published: Sept. 29, 2023
Никель-цинковые (Ni–Zn) и магний-цинковые ферриты (Mg–Zn), а также композиты на их основе, являются одним из наиболее перспективных радиопоглощающих материалов, которые могут эффективно поглощать электромагнитное излучение в диапазоне частот от нескольких МГц до единиц ГГц. Многие вопросы, связанные с радиопоглощающими свойствами данных остаются открытыми сих пор, что является следствием влиянием параметров образца, как частотные зависимости магнитной диэлектрической проницаемости, так параметры доменных стенок. В рамках настоящей работы предложена математическая модель процесса распространения электромагнитных волн Ni–Zn ферритах. Поставлены граничные начальные условия, учитывающие геометрию микроструктуру образцов. Решение сформулированной краевой задачи отрезке использованием метода разделения переменных или Фурье показало, амплитуда электромагнитной волны значительно уменьшается, пройдя половину толщины отвечает высоким радиопоглощающим свойствам исследуемых ферритов. Проведен численный анализ отражения плоской поляризованной двухслойной структуры Ni–Znферрит/металлическая пластина области 100 MГц. Результаты моделирования верифицированы экспериментальными данными по ферритов марки 1000НН. Показано, использование предположения об экспоненциальном характере зависимостей проницаемости нормированной координаты применимы только узком частотном 3 МГц, для которого экспериментальные данные результаты численного анализа находятся хорошем согласии.
Language: Русский
Citations
0