Microwave hydrothermal preparation of submicron-sized spherical magnetite (Fe3O4) powders

Khollam, Y. B.; Dhage, Sanjay R.; Potdar, H.S.; Deshpande, S. B.; Bakare, P. P.; Kulkarni, S.D.; Date, S. K.

doi:10.1016/s0167-577x(02)00554-2

Cited by 176 publications

(97 citation statements)

References 12 publications

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“…10 Such a result would be not possible without enormous efforts in the development of fabrication, [11][12][13][14] characterization techniques 15,16 and basic theory in the magnetism of the fine particles 17,18 and assemblies of ferromagnetic nanoparticles. 19 There are different physical and chemical methods for fabrication of the oxide MNPs: hydrothermal synthesis, 11 microemulsion, 12 chemical co-precipitation, 16,20 oxidation of Fe(OH) 2 , 21 heating the material with different types of irradiation, 22 autocombustion, 4 and biomioneralization 23 etc. Despite the advantages of traditional chemical techniques for the iron oxide synthesis there are well known disadvantages, such as low production rates, limited purity or a high environmental cost of the final product, clear deviations from the sphericity, and wide size distributions, etc.…”

Section: Introductionmentioning

confidence: 99%

Iron oxide nanoparticles fabricated by electric explosion of wire: focus on magnetic nanofluids

et al. 2012

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Nanoparticles of iron oxides (MNPs) were prepared using the electric explosion of wire technique (EEW). The main focus was on the fabrication of de-aggregated spherical nanoparticles with a narrow size distribution. According to XRD the major crystalline phase was magnetite with an average diameter of MNPs, depending on the fraction. Further separation of air-dry EEW nanoparticles was performed in aqueous suspensions. In order to provide the stability of magnetite suspension in water, we found the optimum concentration of the electrostatic stabilizer (sodium citrate and optimum pH level) based on zeta-potential measurements. The stable suspensions still contained a substantial fraction of aggregates which were disintegrated by the excessive ultrasound treatment. The separation of the large particles out of the suspension was performed by centrifuging. The structural features, magnetic properties and microwave absorption of MNPs and their aqueous solutions confirm that we were able to obtain an ensemble in which the magnetic contributions come from the spherical MNPs. The particle size distribution in fractionated samples was narrow and they showed a similar behaviour to that expected of the superparamagnetic ensemble. Maximum obtained concentration was as high as 5 % of magnetic material (by weight). Designed assembly of de-aggregated nanoparticles is an example of on-purpose developed magnetic nanofluid

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Section: Introductionmentioning

confidence: 99%

Iron oxide nanoparticles fabricated by electric explosion of wire: focus on magnetic nanofluids

et al. 2012

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“…High-quality magnetic nanoparticles have been synthesized with a number of different methods such as chemical co-precipitation (Massart, 1981;Wu et al, 2007), thermal decomposition and/or reduction (Kimata et al, 2003), microemulsion synthesis (Chin and Yaacob, 2007), hydrothermal/solvothermal synthesis Khollam et al, 2002). Among these methods, the magnetic nanoparticles prepared from thermal decomposition and hydrothermal/solvothermal approaches exhibit high uniformity in both size, shape with excellent magnetic properties and the preparation processes show high potential on a large scale fabrication.…”

Section: Controlled Properties Of Nanoparticlesmentioning

confidence: 99%

Controlled Magnetic Properties of Iron Oxide-Based Nanoparticles for Smart Therapy

Kim

2016

KONA

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Magnetic nanoparticles provide a unique nanosystem for various smart therapy applications because of their biocompatibility, their nanostructures which can be prepared controllably to match with the interest of study and, specifically, their responses to an external magnetic field. Interests in utilizing magnetic nanoparticles for biomedical treatments originate from their external controllability of transportation and movement inside biological objects and magnetic heat generation which provide tremendous advantages for targeted drug delivery and controlled drug release as well as magnetic hyperthermia. Recent progress in synthesis and functionalization has led to the formation of various functional magnetic nanoparticles with controlled magnetic properties based on controlling their particle size, shape and composition. In this review, we focus on the synthesis, protection and functionalization of iron oxide-based magnetic nanoparticles in order to control magnetic properties of nanostructured systems. We also highlight the recent advances in the development of multifunctional therapeutic nanosystems combining magnetic nanoparticles and drugs as well as their superior efficacy in biomedical treatments with smart performance by including therapy and modulated drug delivery and release through magnetic heating.

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“…So, magnetic nanoparticle is brought in as matrix materials to separate adsorbent from samples. Magnetic nanoparticles are widely used for recording material, electrophotographic developer, mineral separation, efficient heat transfer applications, and cancer therapy [22][23][24] due to their superior characteristics, such as small size, high surface-to-volume ratio, and high magnetic susceptibility. Magnetic molecularly imprinted polymers (MMIPs), integrating the merits of magnetic nanoparticles and MIPs, have been reported in the literature.…”

Section: Introduction Nmentioning

confidence: 99%

Core–Shell Magnetic Molecularly Imprinted Polymer Prepared for Selectively Removed Indole from Fuel Oil

Niu

Ni²,

Zhou

et al. 2015

Adv Polym Technol

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Magnetic molecularly imprinted polymers (MMIPs) were synthesized for selective recognition and rapid enrichment of indole from a model fuel. The MMIPs were synthesized by precipitation polymerization and a surface molecular imprinting technique, using indole as the template molecule, Fe 3 O 4 nanoparticles as magnetically susceptible components, methylacrylic acid as the functional monomer, and ethylene glycol dimethacrylate as a cross-linker. The properties of the MMIPs were characterized by Fourier-transform infrared spectroscopy, scanning electron microscopy, transmission electron microscopy, vibrating sample magnetometry, and thermogravimetric analysis. The adsorption capacity of indole-molecularly imprinted polymers (MIPs) was 50.25 mg g −1 at 303 K and reached adsorption equilibrium in a short time. Experimental data were modeled with a pseudo-second-order, Langmuir isotherm model. The selective adsorption performance of MIPs was favorable. C 2015 Wiley Periodicals, Inc. Adv Polym Technol 2015, 0, 21596; View this article online at wileyonlinelibrary.com.

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Microwave hydrothermal preparation of submicron-sized spherical magnetite (Fe3O4) powders

Cited by 176 publications

References 12 publications

Iron oxide nanoparticles fabricated by electric explosion of wire: focus on magnetic nanofluids

Iron oxide nanoparticles fabricated by electric explosion of wire: focus on magnetic nanofluids

Controlled Magnetic Properties of Iron Oxide-Based Nanoparticles for Smart Therapy

Core–Shell Magnetic Molecularly Imprinted Polymer Prepared for Selectively Removed Indole from Fuel Oil

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