Iron-based magnetic nanomaterials: Sustainable approaches of synthesis and applications

Revathy, R.; Sajini, T.; Augustine, Cyril; Joseph, Nayana

doi:10.1016/j.rineng.2023.101114

Cited by 19 publications

(3 citation statements)

References 71 publications

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“…Iron participates in the formation of atherosclerosis by catalyzing the generation of free radicals, promoting the peroxidation of lipid and protein parts of lipoproteins, and forming oxygenated LDL [89]. Compared with magnesium-based degradable metals and zinc-based degradable metals, iron-based degradable metal materials have much higher strength, and through cold working, heat treatment, alloying or other modification of the materials, they can even obtain excellent comprehensive mechanical properties comparable to cobalt-chromium alloys [91]. Iron-based degradable metals are similar to steel materials, and are easily modified through materials (alloying and surface treatment) and processes (hot and cold processing), combined with optimized scaffold design, to create absorbable stents with excellent comprehensive mechanical properties and ultra-thin wall thickness, which are the most promising to replace traditional permanent stents.…”

Section: Research Status Of Iron-based Degradable Metalsmentioning

confidence: 99%

Untitled

2024

Biomed. Lett.

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With the accumulation of data, magnesium-based degradable metal, iron-based degradable metal and zinc-based degradable metal implantable interventional devices have entered the clinic or carried out human experimental studies, and the future prospects are promising. In this paper, the definition, biodegradability and biocompatibility criteria and their classification are reviewed, and the research status and unsolved scientific problems of magnesium-based degradable metals, iron-based degradable metals and zincbased degradable metals are introduced, and the future development opportunities and challenges of degradable metals are prospected. With a deeper understanding of scientific issues such as mechanical adaptation, degradation adaptation and tissue adaptation of degradable metal implants, more new materials, new technologies and new methods of degradable metals will be developed in the future, so as to effectively realize the precise adaptation of the two events of degradable metal material degradation and body tissue repair in time and geometric space.

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Section: Research Status Of Iron-based Degradable Metalsmentioning

confidence: 99%

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2024

Biomed. Lett.

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“…Several magnetic nanomaterials that can be recycled and reused have been developed for catalysis or adsorption [ 5 ]. Among them are ferrites with the general formula of MFe 2 O 4 (M: Mn, Fe, Co, Ni, Cu, and Zn).…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic degradation of methylene blue under visible light by cobalt ferrite nanoparticles/graphene quantum dots

Anh,

Nhi,

Dung

et al. 2024

Beilstein J. Nanotechnol.

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A simple approach was developed to synthesize cobalt ferrite nanoparticles/graphene quantum dots (CF/GQDs). The material was prepared from a homogeneous mixture of iron nitrate, cobalt nitrate, and starch at 140, 180 and 200 °C in a 24 h thermal hydrolysis process. The obtained materials were characterised by using X-ray diffraction, scanning electron microscopy, transmission electron microscopy, ultraviolet–visible diffuse reflectance spectroscopy, Fourier-transform infrared spectroscopy, photoluminescence spectroscopy, vibrating-sample magnetometry, and nitrogen adsorption/desorption isotherms. Cobalt ferrite crystals of around 8–10 nm and graphene quantum dots formed directly at 200 °C. Stacking GQDs sheets onto the CF nanoparticles resulted in CF/GQDs nanoparticles. The nanocomposite exhibits satisfactory fluorescent and superparamagnetic properties, which are vital for catalytic applications. The CF/GQDs catalyse significantly the degradation of methylene blue (MB) under visible light. The catalyst can be recycled with an external magnetic field and displays suitable stability. Also, it was reused in three successive experiments with a loss of efficiency of about 5%. The CF/GQDs are considered as an efficient photocatalyst for MB degradation and other dyes.

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“…Recently, iron-based nanomaterials have been widely used in different fields (i.e., energy storage, biomedicine, sensors, catalysis, etc.) due to their low-cost synthesis, good biocompatibility, high chemical stability, and excellent electron transfer ability [ 19 , 20 , 21 ]. Among different types of iron-based nanomaterials, hematite (α-Fe 2 O 3 ), maghemite (γ-Fe 2 O 3 ), and magnetite (Fe 3 O 4 ) are widely used for the detection of different analytes (i.e., gases, biomolecules, organic compounds, heavy metals, ions, drugs, and pesticides) [ 22 , 23 , 24 , 25 ].…”

Section: Introductionmentioning

confidence: 99%

An Electroanalytical Enzymeless α-Fe2O3-ZnO Hybrid Nanostructure-Based Sensor for Sensitive Quantification of Nitrite Ions

Ahmad,

Abdullah,

Rehman

et al. 2024

Nanomaterials

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Nitrite monitoring serves as a fundamental practice for protecting public health, preserving environmental quality, ensuring food safety, maintaining industrial safety standards, and optimizing agricultural practices. Although many nitrite sensing methods have been recently developed, the quantification of nitrite remains challenging due to sensitivity and selectivity limitations. In this context, we present the fabrication of enzymeless iron oxide nanoparticle-modified zinc oxide nanorod (α-Fe2O3-ZnO NR) hybrid nanostructure-based nitrite sensor fabrication. The α-Fe2O3-ZnO NR hybrid nanostructure was synthesized using a two-step hydrothermal method and characterized in detail utilizing x-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS). These analyses confirm the successful synthesis of an α-Fe2O3-ZnO NR hybrid nanostructure, highlighting its morphology, purity, crystallinity, and elemental constituents. The α-Fe2O3-ZnO NR hybrid nanostructure was used to modify the SPCE (screen-printed carbon electrode) for enzymeless nitrite sensor fabrication. The voltammetric methods (i.e., cyclic voltammetry (CV) and differential pulse voltammetry (DPV)) were employed to explore the electrochemical characteristics of α-Fe2O3-ZnO NR/SPCE sensors for nitrite. Upon examination of the sensor’s electrochemical behavior across a range of nitrite concentrations (0 to 500 µM), it is evident that the α-Fe2O3-ZnO NR hybrid nanostructure shows an increased response with increasing nitrite concentration. The sensor demonstrates a linear response to nitrite concentrations up to 400 µM, a remarkable sensitivity of 18.10 µA µM−1 cm−2, and a notably low detection threshold of 0.16 µM. Furthermore, its exceptional selectivity, stability, and reproducibility make it an ideal tool for accurately measuring nitrite levels in serum, yielding reliable outcomes. This advancement heralds a significant step forward in the field of environmental monitoring, offering a potent solution for the precise assessment of nitrite pollution.

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Iron-based magnetic nanomaterials: Sustainable approaches of synthesis and applications

Cited by 19 publications

References 71 publications

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Photocatalytic degradation of methylene blue under visible light by cobalt ferrite nanoparticles/graphene quantum dots

An Electroanalytical Enzymeless α-Fe2O3-ZnO Hybrid Nanostructure-Based Sensor for Sensitive Quantification of Nitrite Ions

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