Nanocrystalline LiF via microemulsion systems
- 1 January 1999
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of Materials Chemistry
- Vol. 9 (2) , 493-497
- https://doi.org/10.1039/a807301e
Abstract
LiF has been prepared in nanocrystalline form by means of microemulsion-mediated precipitation of NH 4 F and LiOAc. Grain growth during the intermicellar exchange, i.e. Ostwald ripening due to the comparatively high solubility of LiF, was suppressed by a strict control of the reaction time. For short times a flowmixer with a certain tube length was used. The reaction was stopped by coagulation in acetone. On heating, the by-product, NH 4 OAc, transforms into acetamide which can easily be extracted. The resulting nano-LiF was isolated as a powder; it exhibits grain sizes between 25 and 70 nm, depending on the reaction time.Keywords
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