Mechanistic insight into formation and changes of nanoparticles in MgF2 sols evidenced by liquid and solid state NMR

Dalton Transactions Pub Date: 2012-01-03 DOI: 10.1039/C2DT11762B

Abstract

The fluorolytic sol–gel reaction of magnesium methoxide with HF in methanol was studied by 19F, 1H and 13C liquid and solid state NMR. In 19F NMR five different species were identified, three of which belong to magnesium fluoride nanoparticles, i.e.NMR gave access to local structures of solid particles in suspensions. The long-term evolution of 19F signals was followed and along with 19F MAS NMR experiments of sols rotating at 13 kHz mechanistic insights into the ageing processes were obtained.

Graphical abstract: Mechanistic insight into formation and changes of nanoparticles in MgF2 sols evidenced by liquid and solid state NMR
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