The synthesis of core–shell iron@gold nanoparticles and their characterization

Ban, Zhihui; Barnakov, Yu. A.; Li, Feng; Golub, Vladimir; O’Connor, Charles J.

doi:10.1039/b504304b

Cited by 171 publications

(115 citation statements)

References 17 publications

(29 reference statements)

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“…OConnor and co-workers have synthesized gold-coated iron nanoparticles with about Magnetic Nanoparticles Angewandte Chemie 11 nm core size and a gold shell of about 2.5 nm thickness. [140] These gold coated iron particles are stable under neutral and acidic aqueous conditions. The coating was achieved by a partial replacement reaction in a polar aprotic solvent.…”

Section: Precious-metal Coatingmentioning

confidence: 99%

“…Precious metals can be deposited on magnetic nanoparticles through reactions in microemulsion, [137,138] redox transmetalation, [139][140][141] iterative hydroxylamine seeding, [142] or other methods, to protect the cores against oxidation. Cheon et al reported a synthesis of platinum-coated cobalt by refluxing cobalt nanoparticle colloids (ca.…”

Section: Precious-metal Coatingmentioning

confidence: 99%

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Magnetic Nanoparticles: Synthesis, Protection, Functionalization, and Application

2007

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This review focuses on the synthesis, protection, functionalization, and application of magnetic nanoparticles, as well as the magnetic properties of nanostructured systems. Substantial progress in the size and shape control of magnetic nanoparticles has been made by developing methods such as co-precipitation, thermal decomposition and/or reduction, micelle synthesis, and hydrothermal synthesis. A major challenge still is protection against corrosion, and therefore suitable protection strategies will be emphasized, for example, surfactant/polymer coating, silica coating and carbon coating of magnetic nanoparticles or embedding them in a matrix/support. Properly protected magnetic nanoparticles can be used as building blocks for the fabrication of various functional systems, and their application in catalysis and biotechnology will be briefly reviewed. Finally, some future trends and perspectives in these research areas will be outlined.

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Section: Precious-metal Coatingmentioning

confidence: 99%

Section: Precious-metal Coatingmentioning

confidence: 99%

Magnetic Nanoparticles: Synthesis, Protection, Functionalization, and Application

2007

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“…Over the past decades, magnetic materials with various shapes, sizes and crystal structures have been applied in different fields, i.e., for data information storage, photonics and electronics [1][2][3], magnetic sensors [4,5], catalysis [6], environmental remediation [7,8] as well as in biomedicine, drug delivery, magnetic resonance imaging and pharmaceutical areas [9][10][11]. Metal nanostructures were shown to present enhanced electronic, magnetic, optical and chemical properties compared to those of already existing bulk materials.…”

Section: Introductionmentioning

confidence: 99%

Hydrothermal Treatment of Tannin: A Route to Porous Metal Oxides and Metal/Carbon Hybrid Materials

et al. 2017

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Abstract:In the present paper, porous materials were prepared from the hydrothermal treatment of aqueous solutions of tannin, a renewable phenolic resource extracted from tree barks, containing dissolved salts of transition metals: V, Cr, Ni and Fe. Hydrothermal treatment produced carbonaceous particles doped with the aforementioned metals, and such materials were treated according to two different routes: (i) calcination in air in order to burn the carbon and to recover porous oxides; (ii) pyrolysis in inert atmosphere so as to recover porous metal/carbon hybrid materials. The nature of the metal salt was found to have a dramatic impact on the structure of the materials recovered by the first route, leading either to nano-powders (V, Cr) or to hollow microspheres (Ni, Fe). The second route was only investigated with iron, leading to magnetic Fe-loaded micro/mesoporous carbons whose texture, pore volumes and surface areas gradually changed with the iron content.

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“…38,39 Despite this complication, many researchers have been able to coat MNPs with gold by using new techniques. Ban et al synthesized gold-coated iron nanoparticles using a partial replacement reaction in a polar aprotic solvent, 40 Liu et al synthesized gold-coated iron nanoparticles using a …”

Section: -37mentioning

confidence: 99%

Nanoparticles for hyperthermic therapy: synthesis strategies and applications in glioblastoma

Verma¹,

Lal²,

Noorden³

2014

IJN

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Glioblastoma multiforme (GBM) is the most common and most aggressive malignant primary brain tumor in humans. Current GBM treatment includes surgery, radiation therapy, and chemotherapy, sometimes supplemented with novel therapies. Despite recent advances, survival of GBM patients remains poor. Major challenges in GBM treatment are drug delivery across the blood–brain barrier, restriction of damage to healthy brain tissues, and limitation of resistance to therapies. This article reviews recent advances in the application of magnetic nanoparticles (MNPs), gold nanorods (GNRs), and carbon nanotubes (CNTs) for hyperthermia ablation of GBM. First, the article introduces GBM, its current treatment, and hyperthermia as a potential modality for the management of GBM. Second, it introduces MNPs, GNRs, and CNTs as inorganic agents to induce hyperthermia in GBM. Third, it discusses different methodologies for synthesis of each inorganic agent. Finally, it reviews in vitro and in vivo studies in which MNPs, GNRs, and CNTs have been applied for hyperthermia ablation and drug delivery in GBM.

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The synthesis of core–shell iron@gold nanoparticles and their characterization

Cited by 171 publications

References 17 publications

Magnetic Nanoparticles: Synthesis, Protection, Functionalization, and Application

Magnetic Nanoparticles: Synthesis, Protection, Functionalization, and Application

Hydrothermal Treatment of Tannin: A Route to Porous Metal Oxides and Metal/Carbon Hybrid Materials

Nanoparticles for hyperthermic therapy: synthesis strategies and applications in glioblastoma

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