High Speed 1H MAS NMR Investigations of the Corrosion Surface in Phosphate Glass
Solid-state high-speed 1H MAS NMR spectroscopy was used to investigate the weathered surface of a potassium aluminum phosphate (KAP) glass exposed to a humid environment (30K2Oradical dot10Al2O3radical dot60P2O5, mol%). Through the combination of spin-spin relaxation and double quantum (DQ) filtering it was possible to resolve seven or eight different proton environments within the weathered surface of the KAP glass. Two-dimensional (2D) DQ and 2D NOESY NMR correlation experiments were performed to probe the spatial proximity of these different proton species. These 1H-1H correlation experiments helped confirm the spectral assignments. The analysis of these different 1H environments provides additional information about the chemical processes that occur at the weathered glass surface.
R. K. Brow et al., "High Speed 1H MAS NMR Investigations of the Corrosion Surface in Phosphate Glass," Journal of Non-Crystalline Solids, Elsevier Inc., Jan 2005.
The definitive version is available at http://dx.doi.org/10.1016/j.ssnmr.2004.08.006
Materials Science and Engineering
Keywords and Phrases
1H MAS NMR; High Speed Investigations; Corrosion Surface; Phosphate Glass
Article - Journal
© 2005 Elsevier Inc., All rights reserved.