Magnetic nanofibers for remotely triggered catalytic activity applied to the degradation of organic pollutants

Fuentes-García, J. A.; Sanz, Beatriz; Mallada, R.; Ibarra, M. R.; Goya, Gerardo F.

doi:10.1016/j.matdes.2023.111615

Cited by 7 publications

(7 citation statements)

References 73 publications

(80 reference statements)

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“…There exist more sophisticated methods of fabricating magnetic textiles than ours, such as electrospinning, where one can control the formation process, or obtaining modified fibers in adequate quantities, e.g., using sonochemical methods as presented in [24] for applications in catalysis. However, from the perspective of hyperthermia therapy efficiency, it is more important to use a smart material and take advantage of a robust method of fabrication, and provide a fast heat release to the region of interest.…”

Section: Discussionmentioning

confidence: 99%

Magneto-Responsive Textiles for Non-Invasive Heating

Józefczak

Kaczmarek

Bielas

et al. 2023

IJMS

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Magneto-responsive textiles have emerged lately as an important carrier in various fields, including biomedical engineering. To date, most research has been performed on single magnetic fibers and focused mainly on the physical characterization of magnetic textiles. Herein, from simple woven and non-woven textiles we engineered materials with magnetic properties that can become potential candidates for a smart magnetic platform for heating treatments. Experiments were performed on tissue-mimicking materials to test the textiles’ heating efficiency in the site of interest. When the heat was induced with magneto-responsive textiles, the temperature increase in tissue-mimicking phantoms depended on several factors, such as the type of basic textile material, the concentration of magnetic nanoparticles deposited on the textile’s surface, and the number of layers covering the phantom. The values of temperature elevation, achieved with the use of magnetic textiles, are sufficient for potential application in magnetic hyperthermia therapies and as heating patches or bandages.

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Section: Discussionmentioning

confidence: 99%

Magneto-Responsive Textiles for Non-Invasive Heating

Józefczak

Kaczmarek

Bielas

et al. 2023

IJMS

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“…Consequently, they are suitable for various applications, including cancer treatment through magnetic hyperthermia (MH) [1,2]. Additionally, MNPs have been employed as heat generators for magnetically activable catalysis in the degradation of organic pollutants [3,4], as the reaction temperature plays a crucial role in the degradation efficiency. Also, MNPs assist in the generation of free radicals in heterogeneous catalysis processes [5,6].…”

Section: Introductionmentioning

confidence: 99%

“…Previous studies have shown that magnetite-based nanoparticles with variable cation valency are the most promising material to be used as heterogeneous catalysts for various organic reactions [3,14]. Wastewater treatments in heterogeneous Fenton and Fentonlike systems utilizing advanced oxidation processes (AOPs) in AC magnetic fields have been extensively studied over the past two decades.…”

Section: Introductionmentioning

confidence: 99%

“…Wastewater treatments in heterogeneous Fenton and Fentonlike systems utilizing advanced oxidation processes (AOPs) in AC magnetic fields have been extensively studied over the past two decades. They were mainly based on the generation of free radicals • HO and HOO • in the reaction between H 2 O 2 and active centers Fe(II)/Fe(III) [3,5]. Additionally, magnetic nanoparticles heating in the AC magnetic field enhances the catalytic process.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis, Surface Modification and Magnetic Properties Analysis of Heat-Generating Cobalt-Substituted Magnetite Nanoparticles

Ognjanović,

Bošković,

Kolev

et al. 2024

Nanomaterials

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Here, we present the results of the synthesis, surface modification, and properties analysis of magnetite-based nanoparticles, specifically Co0.047Fe2.953O4 (S1) and Co0.086Fe2.914O4 (S2). These nanoparticles were synthesized using the co-precipitation method at 80 °C for 2 h. They exhibit a single-phase nature and crystallize in a spinel-type structure (space group Fd3¯m). Transmission electron microscopy analysis reveals that the particles are quasi-spherical in shape and approximately 11 nm in size. An observed increase in saturation magnetization, coercivity, remanence, and blocking temperature in S2 compared to S1 can be attributed to an increase in magnetocrystalline anisotropy due to the incorporation of Co ions in the crystal lattice of the parent compound (Fe3O4). The heating efficiency of the samples was determined by fitting the Box-Lucas equation to the acquired temperature curves. The calculated Specific Loss Power (SLP) values were 46 W/g and 23 W/g (under HAC = 200 Oe and f = 252 kHz) for S1 and S2, respectively. Additionally, sample S1 was coated with citric acid (Co0.047Fe2.953O4@CA) and poly(acrylic acid) (Co0.047Fe2.953O4@PAA) to obtain stable colloids for further tests for magnetic hyperthermia applications in cancer therapy. Fits of the Box-Lucas equation provided SLP values of 21 W/g and 34 W/g for CA- and PAA-coated samples, respectively. On the other hand, X-ray photoelectron spectroscopy analysis points to the catalytically active centers Fe2+/Fe3+ and Co2+/Co3+ on the particle surface, suggesting possible applications of the samples as heterogeneous self-heating catalysts in advanced oxidation processes under an AC magnetic field.

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“…, CoFe 2 O 4 (ref. 19 and 20 ) CoMn 2 O 4 , 21 Co x Mn 3 x O 4 , 22 CoNi 2 O 4 , CoCu 2 O 4 , M–Co 2 O x (M is transition metals), 23,24 CuCo 2 O 4 , 25 Fenton-like catalyst, 26,27 magnetic nano-fibers, 28 phosphate doping of Nb 2 O 5 , 29 Ag/AgCl/3D-rGO, 30 and Mn–Fe 2 O 3 (ref. 31 )) for PMS activation has become a precedency in decolorization of methylene blue and methyl orange.…”

Section: Introductionmentioning

confidence: 99%