Structural investigation of V$_2$O$_5$�?�P$_2$O$_5$�?�K$_2$O glass system with antibacterial potential

[摘要] The $x$V$_2$O($1 âˆ�? x$)[0.8 P$_2$O$_5$·0.2K$_2$O] glass system with $0 lt x lt 50$ 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 V$_2$O$_5$ oxide, as network modifier (for $xlt 10$ mol%) and the network former ($xgt 20$ mol%), as a consequence of phosphate network depolymerization and Pâ€�?�Oâ€�?�V and Vâ€�?�Oâ€�?�V linkages appearance was also highlighted. The antibacterial effect of the glasses with $x lt 20$ mol% V$_2$O$_5$ content was tested by optical density (OD) measurements. A linear correlation between the amount of vanadium and the antibacterial effect was evidenced.

[学科分类] 材料工程

[关键词] P$_2$O$_5$;K$_2$O;V$_2$O$_5$;IR;ESR;antibacterial effect.