.png){kind=icon}
.png){kind=icon}
Return
Structure and properties of silver phosphate glasses with tungsten trioxide
.png){kind=icon}
PRE
AI
L
T
P
L
B
M
L
DOI：10.1016/j.jnoncrysol.2026.124080.png)
.png){kind=icon}
Original request for help.png){kind=icon}
Share.png){kind=icon}
Save
Abstract
En 中文
Phosphate glasses from the ternary Ag2O-WO3-P2O5 system were prepared and investigated. A total of 22 compositions were synthesized across five series, and their basic physical parameters were determined. The glass-forming region of the system was established, and glasses containing as little as 10 mol% P2O5 were successfully obtained. The highest achievable Ag2O content in these ternary glasses was 60 mol%. The glass transition temperature (Tg) increased with WO3 content, reaching a maximum of 500 degrees C for the 10Ag2O-50WO3-40P2O5 composition. Structural characterization was performed using Raman spectroscopy and 31P MAS NMR spectroscopy. In the series with constant P2O5 content, 31P MAS NMR spectra revealed that a reduction in Ag+ concentration decreases the number of nonbridging oxygen atoms, while promoting the formation of W-O-P linkages. Both Raman and NMR data demonstrated that progressive incorporation of WO3 induces depolymerization of the phosphate network and its transformation into a tungstate-phosphate framework, where isolated PO4 units are incorporated into the disordered tungstate network via W-O-P bridges. Tungsten atoms are exclusively octahedrally coordinated, and with increasing WO3 content, isolated WO6 octahedra progressively connect into chains and clusters through W-O-W bridges.
Keywords:
Silver phosphate glasses
Glass properties
Glass structure
NMR spectra
Raman spectra
Journal
IF:
3.5
Papers:
1.9W
Citations:
3.3W
Organization
Cited Papers