Szczegóły publikacji
Opis bibliograficzny
Molybdenum modified phosphate glasses studied by $^{31}P$ MAS NMR and Raman spectroscopy / Magdalena SZUMERA // Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy ; ISSN 1386-1425. — 2015 — vol. 137, s. 111–115. — Bibliogr. s. 115, Abstr.
Autor
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 84342 |
|---|---|
| Data dodania do BaDAP | 2014-09-24 |
| Tekst źródłowy | URL |
| DOI | 10.1016/j.saa.2014.08.038 |
| Rok publikacji | 2015 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Spectrochimica Acta, Part A, Molecular and Biomolecular Spectroscopy |
Abstract
Glasses have been synthesized in the system P2O5SiO2K2OMgOCaO modified by addition of MoO3. Glasses were prepared by conventional fusion method from 40 g batches. The influence of Mo-cations on the analysed glass structure was investigated by means of Raman and 31P MAS-NMR techniques. It has been found that molybdate units can form Mo[MoO4/MoO6]OP and/or Mo[MoO4/MoO6]OSi bonds with non-bridging oxygens atoms of Q2methaphosphate units, resulting in the transformation of chain methaphosphate structure into pyrophosphate and finally into orthophosphate structure. It has been also found that increasing amount of MoO3in the structure of investigated glasses causes their gradual depolymerization and molybdenum ions in the analysed glass matrix act as modifying cations. © 2014 Elsevier B.V. All rights reserved.
