Issue 1, 2014

Sol–gel synthesis and characterisation of nanoscopic strontium fluoride

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

Article information

Article type
Paper
Submitted
19 Jul 2013
Accepted
24 Oct 2013
First published
19 Nov 2013

RSC Adv., 2014,4, 32-38

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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