Structural investigation of V2O5-P2O5-K2O glass system with antibacterial potential

Abstract

The xV2O(1 - x)[0.8 P2O5 0.2 K2O] glass system with 0 = x = 50 mol% was prepared and the structural changes induced in these glasses by increasing the vanadium oxide content were investigated by IR and ESR spectroscopies. The dual behaviour role of V2O5 oxide, as network modifier (for x = 10 mol%) and the network former (x =20 mol%), as a consequence of phosphate network depolymerization and P-O-V and V-O-V linkages appearance was also highlighted. The antibacterial effect of the glasses with x =20 mol% V2O5 content was tested by optical density (OD) measurements. A linear correlation between the amount of vanadium and the antibacterial effect was evidenced.