摘要
利用自组装方式制备了多酸-有机胺-二氧化钛复合催化剂K5Ni(H2O)PW11O39-APS-TiO2(APS为(C2H5O)3SiCH2CH2CH2NH2的简称),简称为TiO2-APS-PW11Ni,通过红外(IR),紫外漫反射(UV/DRS)对其组成和结构进行了表征。并利用该催化剂光降解染料污染物罗丹明B(RB)水溶液,与纳米TiO2催化剂光降解进行对比,结果表明,染料罗丹明B在复合催化剂作用下的催化效果明显优于TiO2光催化效果,计算得降解半衰期分别为:T1/2(复合催化剂)=6.5 min,T1/2(TiO2)=21.2 min。
A new and efficient composite catalyst TiO2-APS-PW11 Ni, TiO2 modified by transition metal-monosubstituted polyoxometalates K5 [Ni（H2O）PW, O39] （PW11Ni）, was prepared. The structure and compositions of the material were characterized by UV diffuse reflectance spectroscopy （DR/UV） and infrared （IR） spectroscopy, indicating that the PW11 Ni clusters were chemically attached to TiO2 supports. And the heterogeneous catalyst was used to photodegrade organic dye Rhodamine B（RB）. The results showed that photocatalytic activity of TiO2-APS-PW11Ni was higher than that of TiO2. And the half time of degradation were T1/2 （TiO2-APS-PW, Ni） = 6.5 min, T1/2 （TiO2） = 21.2 min.
出处
《分析试验室》
CAS
CSCD
北大核心
2007年第6期51-54,共4页
Chinese Journal of Analysis Laboratory
关键词
光催化
光降解
罗丹明B
Photocatalysis
Photodegradation
Rhodamine B
