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Synthesis of MgAl2O4 spinel nanoparticles using a mixture of bayerite and magnesium sulfate

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Abstract

This article reports a novel method to prepare MgAl2O4 spinel nanoparticles. By calcining a powder mixture of bayerite and magnesium sulfate at 800 °C and washing with water, single-phase MgAl2O4 spinel nanoparticles were prepared. The powder mixture and the calcined products were characterized by differential thermal and thermogravimetric analysis (DSC-TG), X-ray diffraction (XRD), transmission electron microscopy (TEM), and Brunauer–Emmett–Teller (BET) nitrogen-gas adsorption method. The obtained MgAl2O4 spinel nanoparticles have an average particle size of 12 nm, a narrow size distribution, and weak agglomeration. The specific surface area of the MgAl2O4 spinel powder is 110 m2/g. The formation of MgAl2O4 spinel is attributed to a solid-state reaction between γ-Al2O3 and MgSO4.

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Acknowledgments

This work was supported by the National Natural Science Foundation of China under 50872046, the International S&T Cooperation Program (ISCP) of MOST under 2008DFA50340, and the Specialized Research Foundation for the Doctoral Programs of MOE (20070730022), China.

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Authors and Affiliations

  1. Institute of Materials Science and Engineering, Lanzhou University, Lanzhou, 730000, China

    Xinghua Su, Xuelian Du, Suqiang Li & Jiangong Li

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  1. Xinghua Su
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  2. Xuelian Du
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  3. Suqiang Li
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  4. Jiangong Li
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Correspondence to Jiangong Li.

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Su, X., Du, X., Li, S. et al. Synthesis of MgAl2O4 spinel nanoparticles using a mixture of bayerite and magnesium sulfate. J Nanopart Res 12, 1813–1819 (2010). https://doi.org/10.1007/s11051-009-9739-2

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  • DOI: https://doi.org/10.1007/s11051-009-9739-2

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