TiO_2/SiO_2光催化剂制备及对偶氮染降解的研究  

PREPARTION OF TiO_2 /SiO_2 AND STUDY OF PHOTOCATALYTIC PROPERTIES

作　　者：徐瑞银[1] 宋存义[1] 

机构地区：[1]北京科技大学土木与环境工程学院,北京100083

出　　处：《能源环境保护》2004年第6期19-22,共4页Energy Environmental Protection

摘　　要：以多孔硅胶为基质 ,钛酸四丁酯和环已烷为源 ,通过浸渍的方法 ,合成了表面键联型TiO2/SiO2 光催化剂 ,通过Zeta电位、BET和粒度分析、XRD分析、FTIR分析 ,确定氧化钛是通过Ti-O -Si键的联结负载在多孔硅胶表面上。探讨了催化降解条件的变化对降解活性艳红X—3B ;活性亮橙K—R和阳离子红CIR—22的影响 ,最后确定了TiO2/SiO2催化降解偶氮染料的最佳工艺条件。In this paper,Surface bond-conjugated TiO 2 /SiO 2 was prepared by means of the soakag-ing method using cyclohexane solution of Ti(OC 4 H 9 ) 4 and silica substrate as fundus.Based on the results of Zeta voltage,BETand granularity analysis,XRD analysis,FTIR analysis,the growth of ti-tania(predominantly anatase)on the silica substrate seems to occur by anchoring of the TiO 2 phase through Ti-O-Si cross-linking bonds.photocatalytic properties for reactive brilliant red X—3B,reactive brilliant orange K—R and cation red CIR-22under different photodegadation conditions were discussed.The optimum conditions of photodegadation of azo-dye were given at last.

关 键 词：偶氮染料 TiO2/SiO2光催化剂 光催化降解 

分 类 号：TQ42616[化学工程] TQ42618