conclusions based on our results, the administration of fe3o4-nps causes dose dependent adverse effects on liver. background because of their unique magnetic properties, fe3o4 nanoparticles (fe3o4-nps) have extensive applications in various biomedical aspects. investigation of the possible adverse aspects of these particles has lagged far behind their fast growing application. objectives the cu...

We report a facile synthesis of bifunctional Fe3O4-Ag(125)I heterodimers for use as dual-modality imaging agents in magnetic resonance (MR) and single-photon emission computed tomography (SPECT). We introduced (125)I, which is a clinically used radioisotope, as a SPECT reporter, into Fe3O4-Ag heterodimer nanoparticles to provide a new type of bifunctional contrast agent for MRI and SPECT imaging.

Spin-polarized photoelectron spectroscopy has been used to study the candidate half metal Fe3O4. By using higher photon energies we can study polarization in ‘‘as received’’ samples, essentially ‘‘looking through’’ the disrupted surface. Our data agree with theoretical calculations for Fe3O4 but exhibit a lowered polarization. ! 2002 Elsevier Science B.V. All rights reserved.

In the present study, we developed a relatively simple way to incorporate magnetic nanoparticles into electrospun ultrafine fibers of poly(3-hydroxybutyrate) (PHB) by combining electrospinning with in situ co-precipitation. Using this approach, we achieved uniform dispersal of Fe3O4 nanoparticles along the fibrous surface. The formation of Fe3O4 nanoparticles on the fiber surface and the partic...

This paper describes a simple and environmentally friendly method for the preparation of highly stable dispersions of Fe3O4 nanoparticles with controlled morphologies, in the same synthesis system for the first time. During the process, the Fe3O4 nanoparticles are formed using urease as a multifunctional reagent, including catalyst, template and dispersant, due to its enzymatic activity and spe...

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 nanoFe3O4 on a model organism, Chlorella vulgaris (C. vulgaris) in aquatic environment, were studied. The results showed that nano-Fe3O4 was toxic to C. vulgaris and affected...

Here we reported a facile method to synthesize multifunctional nanocables with a tunable chemical composition. Through the in situ templating method, polydopamine could be directly coated onto the magnetic silver nanowires to form Ag NW/Fe3O4@PDA nanocables. Then, Au(Ag)/AgCl/Fe3O4@PDA@Au was elaborately fabricated by utilizing Ag NWs/Fe3O4@PDA as a template by means of spatially confined galva...

As hybrid nanostructures have become more important in many fields of chemistry, Ag nanoparticles (NPs) are being increasingly immobilized onto Fe3O4 microspheres in situ. Structural characterization reveals that the Ag NPs are uniformly immobilized in the Fe3O4 microsphere-based supports. Moreover, Ag NPs are more stable in the hybrid structure than in the naked state and show high catalytic a...

A novel chemical "top-down" method has been employed to prepare tiny Fe3O4 nanobelts. Uniform Fe3O4 nanobelts were obtained by solvothermal reduction of exfoliated FeOCl layers with the assistance of high polar solvents and a PEO-PPO-PEO stabilizer. We also studied the superparamagnetic properties of Fe3O4 nanobelts, which exhibit a magnetic saturation value as high as ∼53 emu g(-1) at room tem...

Synopsis We have recently developed a new blood pool contrast agent (Fe3O4@SiO2/PEG) which possesses higher transverse relaxivity and long intravascular half-life. This study was aimed to assess the ability of Fe3O4@SiO2/PEG to improve high-resolution magnetic resonance angiography in visualizing cerebral microvasculature. Introduction A novel MR angiographic methodology, 3DΔR2-mMRA (three dime...