Enhanced magnetic heating efficiency and thermal conductivity of magnetic nanofluids with FeZrB amorphous nanoparticles

Wang, Junzhang; Fan, Mingwu; Bian, Xiufang; Yu, Mengchun; Wang, Tianqi; Liu, Shuai; Yang, Yinghui; Tian, Yuan; Guan, Rongzhang

doi:10.1016/j.jmmm.2018.06.043

Cited by 29 publications

(10 citation statements)

References 66 publications

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“…[119][120][121][122][123][124][125][126][127] Amorphous nanoparticles are of interest due to their applications in catalysis, optics, magnetism, bioactivity, electrochemistry, and nanocomposites. [128][129][130][131][132][133][134] In particular, there are cases within the water oxidation catalysis literature where the amorphous materials have produced superior catalytic activity to their crystalline counterparts. 135,136 For the formation of amorphous nanoparticles, there are a limited number of studies that use synchrotron XAFS or SAXS techniques to investigate the local structural changes of what are typically amorphous nanoparticles at least initially.…”

Section: Additional Systems Of Interest: Perovskites Quaternary Nanocrystals Amorphous Nanoparticles and Carbon Dotsmentioning

confidence: 99%

Particle formation mechanisms supported by in situ synchrotron XAFS and SAXS studies: a review of metal, metal-oxide, semiconductor and selected other nanoparticle formation reactions

Whitehead

Finke

2021

Mater. Adv.

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Section: Additional Systems Of Interest: Perovskites Quaternary Nanocrystals Amorphous Nanoparticles and Carbon Dotsmentioning

confidence: 99%

Particle formation mechanisms supported by in situ synchrotron XAFS and SAXS studies: a review of metal, metal-oxide, semiconductor and selected other nanoparticle formation reactions

Whitehead

Finke

2021

Mater. Adv.

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“…The maximum viscosity ratio was obtained as 9 for the ferrofluid sample (S3) with 10.5 nm sized particles under 200 G (figure 6(D)). Furthermore, Wang et al studied the viscosities of pump oil and silicon oil based ferrofluids under the influence of an external magnetic field of 500 G applied parallel to the temperature gradient as shown in figures 6(E) and (F), respectively [84]. The decrease in the viscosities was observed with increase in temperature, which was attributed to the increase in internal shear effect.…”

Section: Viscositymentioning

confidence: 99%

“…Also, the sample should be ultrasonicated to ensure that the thermal conductivity returns to its initial value as before the application of any magnetic field. Wang et al [84] investigated the thermal conductivities of pump oil and silicon oil based ferrofluids with 0.17 vol% under the influence of an external magnetic field using transient plane source and transient hot wire methods, respectively (as shown in figures 4(C) and (D)). The magnetic field was applied in the range of 0-700 G parallel to the temperature gradient.…”

Section: Magnetic Propertiesmentioning

confidence: 99%

Advanced biomedical applications of iron oxide nanostructures based ferrofluids

Imran¹,

Affandi²,

Alam³

et al. 2021

Nanotechnology

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Ferrofluids or magnetic nanofluids are highly stable colloidal suspensions of magnetic nanoparticles (NPs) dispersed into various base fluids. These stable ferrofluids possess high thermal conductivity, improved thermo-physical properties, higher colloidal stability, good magnetic properties, and biocompatibility, which are the primary driving forces behind their excellent performance, and thus enable them to be used for a wide range of practical applications. The most studied and advanced ferrofluids are based on iron oxide nanostructures especially NPs, because of their easy and large-scale synthesis at low costs. Although in the last decade, several review articles are available on ferrofluids but mainly focused on preparations, properties, and a specific application. Hence, a collective and comprehensive review article on the recent progress of iron oxide nanostructures based ferrofluids for advanced biomedical applications is undeniably required. In this review, the state of the art of biomedical applications is presented and critically analyzed with a special focus on hyperthermia, drug delivery/ nanomedicine, magnetic resonance imaging, and magnetic separation of cells. This review article provides up-to-date information related to the technological advancements and emerging trends in iron oxide nanostructures based ferrofluids research focused on advanced biomedical applications. Finally, conclusions and outlook of iron oxide nanostructures based ferrofluids research for biomedical applications are presented.

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“…In general terms, stability is higher in surfactant-coated IONPs than that in bare IONPs. Surfactants such as oleic acid, citric acid, silica, PVA, and chitosan improve the NP dispersibility in an aqueous medium. ,, The size of IONPs in ferrofluids is important as well since the thermal motion of smaller particles imparts better stability. However, if the particles are too small (1–2 nm), their magnetic properties could be diminished …”

Section: Synthesis Of Ferrofluidsmentioning

confidence: 99%

Approaches on Ferrofluid Synthesis and Applications: Current Status and Future Perspectives

et al. 2022

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Ferrofluids are colloidal suspensions of iron oxide nanoparticles (IONPs) within aqueous or nonaqueous liquids that exhibit strong magnetic properties. These magnetic properties allow ferrofluids to be manipulated and controlled when exposed to magnetic fields. This review aims to provide the current scope and research opportunities regarding the methods of synthesis of nanoparticles, surfactants, and carrier liquids for ferrofluid production, along with the rheology and applications of ferrofluids within the fields of medicine, water treatment, and mechanical engineering. A ferrofluid is composed of IONPs, a surfactant that coats the magnetic IONPs to prevent agglomeration, and a carrier liquid that suspends the IONPs. Coprecipitation and thermal decomposition are the main methods used for the synthesis of IONPs. Despite the fact that thermal decomposition provides precise control on the nanoparticle size, coprecipitation is the most used method, even when the oxidation of iron can occur. This oxidation alters the ratio of maghemite/magnetite, influencing the magnetic properties of ferrofluids. Strategies to overcome iron oxidation have been proposed, such as the use of an inert atmosphere, adjusting the Fe(II) and Fe(III) ratio to 1:2, and the exploration of other metals with the oxidation state +2. Surfactants and carrier liquids are chosen according to the ferrofluid application to ensure stability. Hence, a compatible carrier liquid (polar or nonpolar) is selected, and then, a surfactant, mainly a polymer, is embedded in the IONPs, providing a steric barrier. Due to the variety of surfactants and carrier liquids, the rheological properties of ferrofluids are an important response variable evaluated when synthesizing ferrofluids. There are many reported applications of ferrofluids, including biosensing, medical imaging, medicinal therapy, magnetic nanoemulsions, and magnetic impedance. Other applications include water treatment, energy harvesting and transfer, and vibration control. To progress from synthesis to applications, research is still ongoing to ensure control of the ferrofluids’ properties.

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Enhanced magnetic heating efficiency and thermal conductivity of magnetic nanofluids with FeZrB amorphous nanoparticles

Cited by 29 publications

References 66 publications

Particle formation mechanisms supported by in situ synchrotron XAFS and SAXS studies: a review of metal, metal-oxide, semiconductor and selected other nanoparticle formation reactions

Particle formation mechanisms supported by in situ synchrotron XAFS and SAXS studies: a review of metal, metal-oxide, semiconductor and selected other nanoparticle formation reactions

Advanced biomedical applications of iron oxide nanostructures based ferrofluids

Approaches on Ferrofluid Synthesis and Applications: Current Status and Future Perspectives

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