Size-controlled preparation of magnetite nanoparticles in the presence of graft copolymers

Wan, Shourong; Huang, Junsheng; Yan, Husheng; Liu, Keliang

doi:10.1039/b512605c

Cited by 177 publications

(125 citation statements)

References 28 publications

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“…The smaller size the ironoxide particles have, the more rapid reactivity and biodegradation the particles will present [8]. Therefore, the synthesis of ultra-small Fe 3 O 4 nanoparticles with size less than 10 nm is highly desired for biomedical applications [9,10]. Recently, several studies on the synthesis of ultrasmall magnetic nanoparticles have been reported.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of PVP-coated ultra-small Fe3O4 nanoparticles as a MRI contrast agent

Zhang

Liu

et al. 2010

J Mater Sci: Mater Med

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Ultra-small Fe 3 O 4 nanoparticles were prepared by using the coprecipitation method, in which the polyvinylpyrrolidone (PVP) serves as a stabilizer. The nanoparticles were characterized by means of X-ray diffraction (XRD), transmission electron microscopy (TEM), infra spectrum (IR), X-ray photoelectron spectroscopy (XPS) and in vivo magnetic resonance imaging (MRI) test. The results showed that the particles' size was determined by the dripping rate and that PVP molecules played the role of preventing the aggregation and restricting the size of Fe 3 O 4 nanoparticles. The Fe 3 O 4 nanoparticles with diameter from 6.5 to 1.9 nm obviously exhibited negative contrast enhancement and concentrated at the target area guided by a permanent magnet.

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Section: Introductionmentioning

confidence: 99%

Synthesis of PVP-coated ultra-small Fe3O4 nanoparticles as a MRI contrast agent

Zhang

Liu

et al. 2010

J Mater Sci: Mater Med

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“…However, Fe 3 O 4 nanoparticles tend to aggregate due to strong magnetic dipole-dipole attractions between particles. So, stabilizers such as surfactants, oxide or polymeric compounds (especially biocompatible polymer) with some specific functional groups have been used to modify these particles to increase the stability (Santra et al 2001;Mikhaylova et al 2004;Wa et al 2006;Kim et al 2006).…”

Section: Introductionmentioning

confidence: 99%

Adsorptive removal of heavy metals by magnetic nanoadsorbent: an equilibrium and thermodynamic study

Shirsath¹,

Shirivastava²

2015

Appl Nanosci

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An efficient and new magnetic nanoadsorbent photocatalyst was fabricated by co-precipitation technique. This research focuses on understanding metal removal process and developing a cost-effective technology for treatment of heavy metal-contaminated industrial wastewater. In this investigation, magnetic nanoadsorbent has been employed for the removal of Zn(II) ions from aqueous solutions by a batch adsorption technique. The adsorption equilibrium data fitted very well to Langmuir and Freundlich adsorption isotherm models. The thermodynamics of Zn(II) ions adsorption onto the magnetic nanoadsorbents indicated that the adsorption was spontaneous, endothermic and physical in nature. Surface morphology of magnetic nanoadsorbent by scanning electron microscopy (SEM) and elemental analysis by EDX technique. The structural and photocatalytic properties of magnetic nanoadsorbent were characterized using X-ray diffraction (XRD) and FTIR techniques. Also, the magnetic properties of synthesized magnetic nanoadsorbent were determined by vibrating spinning magnetometer (VSM).

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“…Compared with bulk Fe 3 O 4 , nano-Fe 3 O 4 has unique characteristics as superparamagnetism, size and quantum tunnel effects, and so on [2][3][4][5][6]. As an important member of the spinel ferrite family, Fe 3 O 4 is among the most widely used soft magnetic materials.…”

Section: Introductionmentioning

confidence: 99%

Photosynthetic Toxicity and Oxidative Damage Induced by nano-Fe3O4 on <i>Chlorella vulgaris</i> in Aquatic Environment

Chen¹,

Zhu²,

Li³

et al. 2012

OJE

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With the rapid development of nanotechnology and widespread use of nanoproducts, concerns have arisen regarding the ecotoxicity of these materials. In this paper, the photosynthetic toxicity and oxidative damage induced by nanoFe 3 O 4 on a model organism, Chlorella vulgaris (C. vulgaris) in aquatic environment, were studied. The results showed that nano-Fe 3 O 4 was toxic to C. vulgaris and affected its content of chlorophyll a, malonaldehyde and glutathione, CO 2 absorption, net photosynthetic rate, superoxide dismutase activity and inhibition of hydroxyl radical generation. At higher concentrations, compared with the control group, the toxicity of nano-Fe 3 O 4 was significantly different. It suggested that nano-Fe 3 O 4 is ecotoxic to C. vulgaris in aquatic environment.

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Size-controlled preparation of magnetite nanoparticles in the presence of graft copolymers

Cited by 177 publications

References 28 publications

Synthesis of PVP-coated ultra-small Fe3O4 nanoparticles as a MRI contrast agent

Synthesis of PVP-coated ultra-small Fe3O4 nanoparticles as a MRI contrast agent

Adsorptive removal of heavy metals by magnetic nanoadsorbent: an equilibrium and thermodynamic study

Photosynthetic Toxicity and Oxidative Damage Induced by nano-Fe3O4 on <i>Chlorella vulgaris</i> in Aquatic Environment

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Size-controlled preparation of magnetite nanoparticles in the presence of graft copolymers

Cited by 177 publications

References 28 publications

Synthesis of PVP-coated ultra-small Fe3O4 nanoparticles as a MRI contrast agent

Synthesis of PVP-coated ultra-small Fe3O4 nanoparticles as a MRI contrast agent

Adsorptive removal of heavy metals by magnetic nanoadsorbent: an equilibrium and thermodynamic study

Photosynthetic Toxicity and Oxidative Damage Induced by nano-Fe3O4 on &lt;i&gt;Chlorella vulgaris&lt;/i&gt; in Aquatic Environment

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Photosynthetic Toxicity and Oxidative Damage Induced by nano-Fe3O4 on <i>Chlorella vulgaris</i> in Aquatic Environment