CAJ | 학술논문

研究以空心玻璃微球为载体，用溶胶-凝胶法制备附载型复合光催化剂的过程.对TiO2·Al2O3／beads光催化活性进行评价，并利用XRD、TEM、SEM对附载型复合光催化剂进行表征，同时对TiO2·Al2O3／beads的吸附性和比表面进行测试.结果表明，附载型复合光催化剂TiO2·Al2O3／beads光活性显著提高且组分摩尔比存在最佳值.当n(TiO2)/m(Al2O3)＝97／3时，其最高光解率为同样降解条件下，同样含量Degussa P-25 TiO2光解率的1.5倍左右.探讨了TiO2·Al2O3／beads光活性提高的主要因素，认为纳米尺寸TiO2和TiO2·Al2O3／beads吸附性是光活性提高的最主要因素，另外，活化条件和比表面也是影响光活性的主要因素.
연구이공심파리미구위재체，용용효-응효법제비부재형복합광최화제적과정.대TiO2·Al2O3／beads광최화활성진행평개，병이용XRD、TEM、SEM대부재형복합광최화제진행표정，동시대TiO2·Al2O3／beads적흡부성화비표면진행측시.결과표명，부재형복합광최화제TiO2·Al2O3／beads광활성현저제고차조분마이비존재최가치.당n(TiO2)/m(Al2O3)＝97／3시，기최고광해솔위동양강해조건하，동양함량Degussa P-25 TiO2광해솔적1.5배좌우.탐토료TiO2·Al2O3／beads광활성제고적주요인소，인위납미척촌TiO2화TiO2·Al2O3／beads흡부성시광활성제고적최주요인소，령외，활화조건화비표면야시영향광활성적주요인소.
The composite photocatalysts of TiO2·Al2O3 attached to the hollow glass microbeads were prepared by a Sol-gel technique. The photocatalyst was characterized by XRD, TEM, SEM and nitrogen adsorption, and the catalyst's photoactivity was evaluated by the photodegradation of a organophosphorous pesticide DDW. The results show that the photocatalytic activity is affected by the mole ratio of the composite photocatalysts. The best photocatalyst among those studied 13 the one which has a mole ratio of 97/3(TiO2∶Al2O3), and its photoactivity is 1.5 times as that of Degussa P25 TiO2. The results suggest that the nano-particles TiO2 and the adsorption of TiO2·Al2O3／beads are the primary factors that improve photoactivity, while the calcination conditions and surface area are the second factors.