Conditions for preparation of nanosized Al₂(WO₄)₃

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• 作者：V. Nikolov ; I. Koseva ; R. Stoyanova ; E. Zhecheva
• 关键词：Nanostructured materials ; Tungstates ; Chemical synthesis ; X-ray diffraction ; Transmission electron microscopy ; Thermal analysis
• 刊名：Journal of Alloys and Compounds
• 出版年：2010
• 出版时间：3 September 2010
• 年：2010
• 卷：505
• 期：2
• 页码：443-449
• 全文大小：495 K

文摘

Pure nanosized Al₂(WO₄)₃ was synthesized according to different methods—solid state synthesis with and without preliminary mechanical activation, co-precipitation and sol–gel method. Structure and morphology of Al₂(WO₄)₃ were determined by powder XRD diffraction and TEM analysis. It was found that the co-precipitation method gives lowest in size, uniform particles (22 nm), distributed in very narrow size region (10–40 nm), expanding more than four times during the thermal treatment. This product seems to be suitable as a starting material for Al₂(WO₄)₃ transparent ceramics.