Abstract
50CuOx-5OP2O5 and 40CuOx-60P2O5 (molar %) glasses with different copper valence states (0<(Cu+)/(Cu+ +Cu2+)<0.91 were synthesized by adding glucose during glass melting. The Cu+ and CuTotal contents were determined by chemical analysis. The [Cu+]/([Cu]+[Cu2+]) ratios of 40CuOx-60P2O5 glasses are higher than those 50CuOx- 50P2O5 glasses because the ultraphosphate being more acidic than metaphosphate, the formation of reduced specie is favoured. The glasses are homogeneous until 8 wt % of glucose, above of this value, the glasses crystallize.
