The effect of P2O5/Na2O substitution on Na2O–P2O5–V2O5 glass structure

Glasses in the xP2O5–(50 − x) Na2O–50V2O5 system were prepared via the melt quench technique. The structural of the glasses under investigation were studied using nuclear magnetic resonance (NMR), Fourier transform infrared (FTIR), and X-ray diffraction (XRD) investigations. The glass free of P2O5 has the highest crystalline structure. The crystallization is decreased when P2O5 is continuously added. High P2O5 concentration causes the mixed vanadium phosphate network to form an amorphous structure. More preserved vanadium phosphate units form when the P2O5/Na2O molar ratio rises. Mixed P2O5 and V2O5 glass formers have a larger bridging oxygen (BO) concentration than that of separate glasses. A weak structure is formed when (BO) concentration and more shielded phosphate units are improved by an increase in BO concentration. The extremely high concentration of (BO) formed in phosphate units can recommend some of the studied material to be used in the field of bio-dental applications.