Nano Archive

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

Su, Xinghua and Du, Xuelian and Li, Suqiang and Li, Jiangong (2010) Synthesis of MgAl2O4 spinel nanoparticles using a mixture of bayerite and magnesium sulfate. Journal of Nanoparticle Research, 12 (5). pp. 1813-1819.

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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.

Item Type:Article
Uncontrolled Keywords:Magnesium aluminate - Nanoparticles - Bayerite - Magnesium sulfate
Subjects:Material Science > Nanofabrication processes and tools
ID Code:9253
Deposited By:SPI
Deposited On:08 Jun 2010 17:50
Last Modified:08 Jun 2010 17:50

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