Functional Modification and Preparation of Superparamagnetic Fe3O4

Xiao Feng Sun; Ya Jing Li

doi:10.4028/www.scientific.net/AMR.743.183

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 743Functional Modification and Preparation of...

Functional Modification and Preparation of Superparamagnetic Fe₃O₄

Abstract:

Functional modification of the surface of Fe₃O₄ nanoparticles was studied using silane coupling reagent A151. The modified and unmodified nanoparticles were characterized by FT-IR, XPS, TEM, DLS and VSM. Both of the unmodified and modified Fe₃O₄ particles show superparamagnetic behavior, and their saturation magnetic values were determined to be 81.14 emu/g and 73.0 emu/g, respectively. A151 was adsorbed on surface and formed chemical bond to be steric hindrance repulsion which prevented nanoparticles from reuniting. The dispersion properties of modified Fe₃O₄ particles were associated with the mass ratio of A151/Fe₃O₄.

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Periodical:

Advanced Materials Research (Volume 743)

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183-188

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.743.183

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Online since:

August 2013

Authors:

Xiao Feng Sun, Ya Jing Li

Keywords:

Dispersion Performance, Fe₃O₄ Particle, Functional Modification, Preparation

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