Synthesis and characterization of nanocrystalline MgAl2O4 spinel via sucrose process |
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Authors: | Babak Alinejad Hosein Sarpoolaky Ali Saberi |
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Affiliation: | a Ceramic Division, Iran University of Science and Technology, 16846-13114 Tehran, Iran b Department of Chemistry, Iran University of Science and Technology, 16846-13114 Tehran, Iran |
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Abstract: | Nanocrystalline MgAl2O4 spinel powder was synthesized using metal nitrates and a polymer matrix precursor composed of sucrose and polyvinyl alcohol (PVA). The precursor and the calcined powders were characterized by simultaneous thermal analysis (STA), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), field emission scanning electron microscopy (FE-SEM) and transmission electron microscopy (TEM). According to XRD results, the inceptive formation temperature of spinel via this technique was between 600 and 700 °C. The calcined powder at 800 °C for 2 h has faced shaped morphology and its crystallite size is in the range of 8-12 nm. Further studies also showed that the amount of polymeric matrix to metal ions has significant influence on the crystallite size of synthesized magnesium aluminate spinel powder. |
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Keywords: | A. Oxides B. Chemical synthesis C. Electron microscopy C. X-ray diffraction |
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