Hierarchical iron oxide nanocomposite: Bundle-like morphology, magnetic properties and potential biomedical application

Tadić, Marin; Lazović, Jelena; Panjan, Matjaž; Kralj, Slavko

doi:10.1016/j.ceramint.2022.02.145

Cited by 26 publications

(4 citation statements)

References 113 publications

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“…Magnetite-maghemite mixtures are reported to develop superparamagnetic property at nanoscale [32][33][34]. The X-RD, TEM and SQUID characterizations of the product obtained by the co-precipitation method are consistent with the results reported in the literature for superparamagnetic nano magnetite-maghemite [32][33][34]. The X-RD and TEM analysis revealed a clear spinel iron oxide nanostructure of about 10 nm of particle size and composed of nothing more than magnetite-maghemite phases.…”

Section: Superparamagnetic Iron Oxide Nanostructuressupporting

confidence: 86%

“…Iron oxide magnetic nanoparticles produced by chemical synthesis are usually composed of both, magnetite and maghemite phases [32]. Magnetite-maghemite mixtures are reported to develop superparamagnetic property at nanoscale [32][33][34]. The X-RD, TEM and SQUID characterizations of the product obtained by the co-precipitation method are consistent with the results reported in the literature for superparamagnetic nano magnetite-maghemite [32][33][34].…”

Section: Superparamagnetic Iron Oxide Nanostructuressupporting

confidence: 85%

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Hyperthermic triggers for drug delivery platforms

Alarcón-Segovia,

Morel,

Daza-Agudelo

et al. 2023

Nanotechnology

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Electromagnetic fields can penetrate aqueous media in a homogeneous and instantaneous way, without physical contact, independently of its temperature, pressure, agitation degree and without modifying their chemical compositions nor heat and mass transfer conditions. In addition, superparamagnetic biomaterials can interact with electromagnetic fields by absorbing electromagnetic energy and transforming it in localized heat with further diffusion to surrounding media. This paper is devoted to the exploration of the potential use of hyperthermic effects resulting from the interaction between externally applied electromagnetic fields and superparamagnetic nanoparticles as a trigger for controlled drug release in soft tissue simulating materials. Gelatin based soft tissue simulating materials were prepared and doped with superparamagnetic nanoparticles. The materials were irradiated with externally applied electromagnetic fields. The effects on temperature and diffusion of a drug model in water and phosphate buffer were investigated. Significant hyperthermic effects were observed. The temperature of the soft tissue simulating material resulted increased from 35°C to 45°C at 2.5 °C/min. Moreover, the release of an entrapped model drug reached 89%. The intensity of the hyperthermic effects was found to have a strong dependency on the concentration of superparamagnetic nanoparticles and the power and the pulse frequency of the electromagnetic field.

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Section: Superparamagnetic Iron Oxide Nanostructuressupporting

confidence: 86%

Section: Superparamagnetic Iron Oxide Nanostructuressupporting

confidence: 85%

Hyperthermic triggers for drug delivery platforms

Alarcón-Segovia,

Morel,

Daza-Agudelo

et al. 2023

Nanotechnology

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“…Iron oxide nanoparticles with different properties can be synthesized by various techniques, such as coprecipitation [17][18][19][20], thermal decomposition [20][21][22], microemulsion [23][24][25], hydrothermal synthesis [26][27][28] and sol-gel synthesis [29][30][31]. Among them, co-precipitation is a simple and low-cost technique with high yield to produce iron oxide nanoparticles with desired properties.…”

Section: Introductionmentioning

confidence: 99%

Investigation of superparamagnetic iron oxide nanoparticles in air environment for elevated saturation magnetization

Karaagac,

Köçkar

2024

Phys. Scr.

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Iron oxide nanoparticles have garnered interest for their unique properties and wide application areas. For applications, superparamagnetic nanoparticles are required so that they can be magnetized by an external magnetic field and rapidly demagnetize again when the field is removed. High saturation magnetization, Ms is also required for applications to provide easy magnetic control over separation and targeting. For magnetically controlled applications, superparamagnetic iron oxide nanoparticles with a high Ms are important. In this study, superparamagnetic iron oxide nanoparticles were co-precipitated under air atmosphere and the effects of alkali concentration, stirring rate and reaction time on the structural and related magnetic properties were investigated to obtain the high Ms for each parameter. According to the structural results, it is challenging to obtain magnetite nanoparticles under air atmosphere due to oxidizing effect. The increase of Ms values with the increase of alkali concentration may come from the phase of the samples although the crystal size of the nanoparticles is getting smaller. It can be said that there is an optimum stirring rate to obtain the highest Ms under air atmosphere rather than an uptrend/downtrend. The maximum Ms of 69.2 emu/g was obtained for superparamagnetic iron oxide nanoparticles synthesized at 700 rpm. With the increase of reaction time, magnetic size of the nanoparticles is observed to decrease in contrast with the increase of physical particle size. The maximum Ms value for the reaction time parameter is 67.3 emu/g at 15 minutes. Due to their high Ms values and superparamagnetic nature, the nanoparticles synthesized under study may find use in magnetic separation, water purification, and other related fields.

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“…Recent years have witnessed an increasing use of metal nanoparticles as building blocks for the fabrication of various nano- and microstructures that find applications in various areas of biomedical and material sciences [ 1 , 2 ]. While discrete nanoparticles in solution are used for several applications such as imaging and sensing, their scope and functional attributes can be enormously broadened through their assembly into clusters or immobilization onto surfaces.…”

Section: Introductionmentioning

confidence: 99%

Self-Assembly of Cyclodextrin-Coated Nanoparticles:Fabrication of Functional Nanostructures for Sensing and Delivery

et al. 2023

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In recent years, the bottom-up approach has emerged as a powerful tool in the fabrication of functional nanomaterials through the self-assembly of nanoscale building blocks. The cues embedded at the molecular level provide a handle to control and direct the assembly of nano-objects to construct higher-order structures. Molecular recognition among the building blocks can assist their precise positioning in a predetermined manner to yield nano- and microstructures that may be difficult to obtain otherwise. A well-orchestrated combination of top-down fabrication and directed self-assembly-based bottom-up approach enables the realization of functional nanomaterial-based devices. Among the various available molecular recognition-based “host–guest” combinations, cyclodextrin-mediated interactions possess an attractive attribute that the interaction is driven in aqueous environments, such as in biological systems. Over the past decade, cyclodextrin-based specific host–guest interactions have been exploited to design and construct structural and functional nanomaterials based on cyclodextrin-coated metal nanoparticles. The focus of this review is to highlight recent advances in the self-assembly of cyclodextrin-coated metal nanoparticles driven by the specific host–guest interaction.

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Hierarchical iron oxide nanocomposite: Bundle-like morphology, magnetic properties and potential biomedical application

Cited by 26 publications

References 113 publications

Hyperthermic triggers for drug delivery platforms

Hyperthermic triggers for drug delivery platforms

Investigation of superparamagnetic iron oxide nanoparticles in air environment for elevated saturation magnetization

Self-Assembly of Cyclodextrin-Coated Nanoparticles:Fabrication of Functional Nanostructures for Sensing and Delivery

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