| Glass exhibits a wide range of application in daily life due to its inherent excellent features.High transparent glasses can provide a comfortable indoor enviro nment by creating eye-catching views.However,organic pollutants and bacteria on the glass may do damage to human health.Ag/AgCl has triggered special interest due to its visible-light driven photocatalytic activity.Usually,Ag/AgCl nanocomposites were synthesized by a two-step route.Besides,the researches about combining Ag/AgCl with glasses have hardly been reported.For further applications of glasses and Ag/AgCl,we synthesize three types of Ag/AgCl-glass composites with visible-light driven photocatalytic activity via hydrothermal method and ion-exchanged process.The specific research results are as follows:（1）A hydrothermal method for one-step prepareing Ag/AgCl supported on the glasses with porous TiO2 films is described for the first time.Spherical and irregular polyhedral Ag/AgCl particles with diameter in range of 70 to 160 nm were synthesized on the surface of porous TiO2 films on the glass matrix.The glass-based Ag/AgCl composites display inferior visible-light driven photocatalytic activity under irradiation of xenon lamp（300 W）.After illu mination 120 min,the photocatalytic efficiency towards methyl orange（MO）only reach 8.5%.（2）The high borosilicate porous glasses were used as matrix to one-step support Ag/AgCl for the first time via a hydrothermal method.Compared with the Ag/AgCl supported on the glasses with porous TiO2 films,the visible-light driven photocatalytic activity of these composites is significantly enhanced.After illu mination 120 min by xenon lamp,the photocatalytic efficiency of the composites towards MO can reach to 63.5%.（3）For the first time,we one-step synthesized Ag/AgCl on the nearsurface of the silicate glass by means of ion-exchange route.Also,it is further studied that various NaCl additions influence the structure and performance of those composites.Spherical-like and cube-like Ag/AgCl particles with size in range of 40 to 130 nm were synthesized with different doping content of NaCl.Compared with two types of composites above,the visible-light driven photocatalytic activity of these composites further improve.After illu mination 90 min,the photocatalytic efficiency of the composites with NaCl content of 5.0 wt%can be raised to 84.7%.Meantime,antibacterial tests have been carried out.The composites synthesized by doping various content of NaCl exhibit different antibacterial performance.After 36 h,the composite with NaCl content of 1.4 wt%present the highest antibacterial rate of47%for Escherichia coli.Under the same condition,the composite with NaCl content of 0.8 wt%show the highest antibacterial rate of 87%for Staphylococcus aureus.（4）To have a good knowledge of the formation of Ag/AgCl on the nearsurface of silicate glass,a synthesis schematic diagram have been decribed.Importantly,the formation of both AgCl and Ag occurs in the network structure formed by the silicon-oxygen bonds during ion-exchange process.Moreover,the smaller depth,the larger content of Ag/AgCl particles.The biggest depth of these Ag/AgCl particles is200μm. |
