Polyol Method for the Preparation of Nanosized Gd₂O₃, Boehmite and Other Oxides

Titelangaben

Müller, Achim ; Heim, Olga ; Panneerselvam, Marudhachalam ; Willert-Porada, Monika:
Polyol Method for the Preparation of Nanosized Gd₂O₃, Boehmite and Other Oxides.
In: Materials Research Bulletin. Bd. 40 (2005) Heft 12 . - S. 2153-2169.
ISSN 1873-4227
DOI: https://doi.org/10.1016/j.materresbull.2005.07.006

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Abstract

A modified microwave-assisted polyol method was applied to prepare nanoparticulate ceramic powders of different oxides, i.e. Gd2O3, AlO(OH) (boehmite) and TiO2. Due to the good dielectric properties of the utilised solvents, such as ethylene glycol, diethylene glycol and 1,4 butanediol, a significant decrease in reaction time was achieved under microwave heating. In the case of AlO(OH) and Gd2O3, \textless5 nm primary particle size were obtained. Boehmite was found to be intercalated with the solvent. The general applicability of the process is shown and the advantages in terms of properties and processibility are described. The powders thus prepared were investigated using X-ray diffractometry, electron microscopy and physisorption.