期刊
MATERIALS LETTERS
卷 57, 期 24-25, 页码 3998-4003出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/S0167-577X(03)00254-4
关键词
magnesium methoxide; nanoparticles; supercritical drying; ultrasound
Sonochemical synthesis followed by supercritical drying was used to prepare MgO nanoparticles from Mg(OCH3)(2) and Mg(OC2H5)(2). Their physicochemical properties were examined by means of X-ray diffraction (XRD), simultaneous thermal analysis (DTA, TG, EGA), specific surface area measurement, scanning and transmission electron microscopy. The dehydrated MgO oxides were free of -OCH3 groups. The highest values of specific surface area (1236 m(2) g(-1)) have been obtained by hydrolysis of magnesium methoxide using toluene as solvent agent. (C) 2003 Published by Elsevier Science B.V.
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