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Issue 1, 2014
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Sol–gel synthesis and characterisation of nanoscopic strontium fluoride

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Abstract

Strontium fluoride nanoparticles have been successfully synthesized via the fluorolytic sol–gel synthesis. The investigation by DLS, XRD, TEM and N2 adsorption/desorption measurements (BET) revealed the existence of sol particles with a hydrodynamic diameter of approximately 6 nm, crystallite sizes below 10 nm and high surface area of 180 m2 g−1. The sols are highly transparent and stable for a few months, however, with time all sols tend to undergo gelation. The ageing process of these sols was investigated using WAXS. As a result, Ostwald ripening as a reason for gel formation can be excluded. By following the reaction progress fluorine-containing crystalline species were detected by XRD and solid state 19F MAS NMR spectroscopy indicating the formation of an intermediate phase during the fluorolysis reaction.

Graphical abstract: Sol–gel synthesis and characterisation of nanoscopic strontium fluoride

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Article information


Submitted
19 Jul 2013
Accepted
24 Oct 2013
First published
19 Nov 2013

RSC Adv., 2014,4, 32-38
Article type
Paper

Sol–gel synthesis and characterisation of nanoscopic strontium fluoride

L. Schmidt, F. Emmerling, H. Kirmse and E. Kemnitz, RSC Adv., 2014, 4, 32
DOI: 10.1039/C3RA43769H

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