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Issue 62, 2015
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Facile synthesis of high dispersion γ-Fe2O3–Au nanoparticles within mesoporous silica spheres

Huiyu Song,a  Xiaona Zhang,a  Jiaxi Zhang,a  Dandan Liu,a  Ting Shu,a  Xu Yang,b  Li Du*a  and  Shijun Liaoa 
Author affiliations

* Corresponding authors

a The Key Laboratory of Fuel Cell Technology of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
E-mail: duli@scut.edu.cn

b Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China

Abstract

High dispersion γ-Fe2O3 combined with Au nanoparticles (denoted as γ-Fe2O3–Au NPs) coated by mesoporous silica spheres (denoted as m-SiO2) were synthesized by a facile one-pot method process. The dispersion of γ-Fe2O3 seed is extremely important to the formation of γ-Fe2O3–Au@m-SiO2 composite, by using a certain amount of neutral β-CD as stabilizing agent, high dispersion γ-Fe2O3 NPs with 16 nm can be prepared. Besides, different number of γ-Fe2O3–Au NPs within composite can be tuned with the addition amount of γ-Fe2O3 seed. TEM images showed the ordered morphology, good dispersion, and uniform particle size of γ-Fe2O3–Au NPs inside composite. Furthermore, XRD, M–H curves and N2 sorption characterization confirmed γ-Fe2O3–Au@m-SiO2 composite possessed good magnetic property, uniform mesopore distribution and high surface area.

Graphical abstract: Facile synthesis of high dispersion γ-Fe2O3–Au nanoparticles within mesoporous silica spheres

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Publication details

The article was received on 20 Apr 2015, accepted on 29 May 2015 and first published on 29 May 2015


Article type: Paper
DOI: 10.1039/C5RA07123B
Citation: RSC Adv., 2015,5, 49914-49919
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    Facile synthesis of high dispersion γ-Fe2O3–Au nanoparticles within mesoporous silica spheres

    H. Song, X. Zhang, J. Zhang, D. Liu, T. Shu, X. Yang, L. Du and S. Liao, RSC Adv., 2015, 5, 49914
    DOI: 10.1039/C5RA07123B

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