Abstract
Glass-ceramics prepared by B2O3-TiO2-SrO system were characterized by XRD, DTA and photodecomposition method. The glass was crystallized at 610 to 700C for 60 min in the atmosphere. The glass heat-treated at 650C was only an anatase-type TiO2 crystal. The anatase-type TiO2 crystal in the glass-ceramics heat-treated at 650C had an effect on the degradation behavior of methylene blue. The crystals of anatase and rutile type were deposited in the glass heat-treated at 700C. The above result shows that SrO in the glass raises the transformation temperature from an anatase-type of TiO2 to a rutile-type. It is possible to prepare a bulk of glass-ceramics with a photocatalytic function.
