Green synthesis of peroxidase mimetic Cobalt ferrite nanoparticles for antioxidant, anti-bacterial and drug delivery studies

Materials Today Chemistry, Journal Year: 2025, Volume and Issue: 43, P. 102502 - 102502

Published: Jan. 1, 2025

Language: Английский

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Green Synthesis of Cobalt–Zinc Ferrites and Their Activity in Dye Elimination via Adsorption and Catalytic Wet Peroxide Oxidation

Metals, Journal Year: 2025, Volume and Issue: 15(1), P. 44 - 44

Published: Jan. 5, 2025

Zinc-substituted cobalt ferrites were obtained by a green method using black grape extract as reductant and fuel. XRD analysis confirmed the spinel structure of synthesized ferrites. An increase in lattice constant is explained increased Zn content. SEM changes surface morphology, whereas FTIR spectra demonstrated presence organic species samples, which originated from extract. The content Co(II) ions octahedral sites function ratio between Fe(III) A- B-sites was calculated Mössbauer data. pHPZC rose 7.85 to 8.13 with an zinc content, indicating positive charge adsorbent at natural pH. adsorption–catalytic properties samples investigated terms Congo Red (CR) dye removal. mechanism CR adsorption on ferrite includes electrostatic donor–acceptor interactions surface. Furthermore, sample x(Zn) = 0.4 exhibited highest degradation rate k 0.102 min−1 peroxide oxidation CR, 1.0 capacity. electron transfer hydrogen evidenced electrochemical tests. green-synthesized Co-Zn demonstrate big potential adsorbents/catalysts for water treatment.

Language: Английский

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Mesoporous Co-Mn ferrites as highly radical-forming catalysts for wet peroxide oxidation of 4-nitrophenol

Applied Surface Science, Journal Year: 2025, Volume and Issue: 690, P. 162610 - 162610

Published: Feb. 1, 2025

Language: Английский

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Facile synthesis, structural, magnetic and enhanced Fluoride (F-1) adsorptive properties of magnesium ferrite and oryza sativa composites

Materials Chemistry and Physics, Journal Year: 2025, Volume and Issue: unknown, P. 130686 - 130686

Published: March 1, 2025

Language: Английский

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Remarkable structural and magnetic properties of nickel-zinc spinel ferrites synthesized by refluxing method

Next Materials, Journal Year: 2025, Volume and Issue: 8, P. 100602 - 100602

Published: March 22, 2025

Language: Английский

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Insights into the catalytic oxidation of toluene over CoO -based catalysts: A review

Journal of Industrial and Engineering Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: April 1, 2025

Language: Английский

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Construction of electron-rich Co centers and abundant redox pairs in MnO2/CoMn2O4 heterointerfaces for PMS activation and water purification

Molecular Catalysis, Journal Year: 2025, Volume and Issue: 580, P. 115100 - 115100

Published: April 11, 2025

Language: Английский

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An Investigation on Structure, AC Conductivity, and Dielectric Characteristics of Ni_0.6Cu_0.2Zn_0.2Pd_3xFe_2‐2xO₄ (x ≤ 0.1) Nanospinel Ferrites

Crystal Research and Technology, Journal Year: 2025, Volume and Issue: unknown

Published: April 23, 2025

Abstract Partially palladium (Pd) substituted Ni 0.6 Cu 0.2 Zn Pd 3x Fe 2‐2x O 4 (x ≤ 0.1) nano‐spinel ferrites (NCZ x NSFs) have been manufactured via sol–gel combustion route. The phase of all samples has endorsed by XRD diffraction analysis. Their crystallite size (D ) were estimated within 36–72 nm range. Morphology and the chemical composition confirmed EDX (Energy Dispersive X‐ray) SEM‐TEM (Scanning‐Transmission Emission Microscopy) respectively. Complex impedance spectroscopy (CIS) was utilized to explore dielectric characteristics 20 120 ºC temperature from 1 106 Hz frequency ranges. two‐dimentional dependencies real imaginary components permittivity (ε / ε // ), loss tangent (tan(δ)), parts modulus (M M σ ac‐conductivity (s), (Z Z along with experimental Nyquist diagrams constructed illustrated for samples. main feature frequencybehavior tan(δ) is presence pronounced maxima depending on both temperature. maximum value observed significantly doped = 0.06‐0.10 substitution changes electron relaxation microwave absorption resonance.

Language: Английский

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Bimetallic Organic Framework‐Derived 3D Hierarchical Ni–Cu/MWCNTs as Anode Catalysts for High‐Performance, Durable Direct Urea Fuel Cells

Advanced Energy Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 25, 2025

Abstract The electrochemical urea oxidation reaction (UOR) is substantiated as a promising pathway for transforming waste into renewable power. Hollow ball‐like architectures composed of 3D carbon shell‐encased Ni–Cu nanoparticles in multi‐walled nanotubes (Ni x ‐Cu y /MWCNTs) have been synthesized, utilizing bimetallic organic framework soft template conjunction with chemical vapor deposition. configurational and electronic traits the as‐formulated catalysts their impact on charge‐transfer processes are elucidated density functional theory, influence UOR kinetics then explicated various techniques. hierarchical porous hollow spherical bundles Ni /MWCNTs accelerate utilization efficacy, interior exterior surfaces exposed to fuel. synergistic interaction between graphitic helps enhance electron conduction pathways, electrocatalytic activity, anti‐poisoning ability toward UOR. Compared commercial Ni/C, catalyst enables direct fuel cells (DUFC) high‐power (47.3 mW cm −2 ) longevity (200 h), benefiting from energetically favored intermediates suppressed N─C bond cleavage facilitated by surface interstitial vacancies /MWCNTs. Moreover, 32.7 along resilience against human urine achieved DUFC, opening up research endeavors sustainable energy development.

Language: Английский

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Implications for Oxygen Evolution Spinel-based Electrocatalyst in Anion Exchange Membrane Water Electrolyser: A Review from Structural Engineering perspective

Journal of Alloys and Compounds, Journal Year: 2024, Volume and Issue: unknown, P. 177819 - 177819

Published: Nov. 1, 2024

Language: Английский

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