硫化镉插层制备K_2La_2Ti_(3-x)Ce_xO_(10)复合催化剂及其活性研究  

Synthesis of CdS-intercalated K_2La_2Ti_(3-x)Ce_xO_(10) composite photocatalyst and photocatalystic activity thereof

作　　者：刘利[1] 林双龙 胡金山[1] 齐跃丽[1,2] 崔文权[1,3] 梁英华[1] 宋延东[1] 

机构地区：[1]河北联合大学化学工程学院,河北唐山063009 [2]河北汇正工程技术有限公司 [3]河北省无机非金属材料重点实验室

出　　处：《无机盐工业》2014年第1期73-77,共5页Inorganic Chemicals Industry

基　　金：国家自然科学基金项目(51172063;51202056);河北省自然科学基金项目(E2012401070)

摘　　要：采用硬脂酸法制备K2La2Ti3-x Cex O10本体。分别采用微波辅助法和水浴法对K2La2Ti3-x Cex O10进行质子交换、胺柱撑和硫化镉插层,制备了硫化镉插层K2La2Ti3-x Cex O10催化剂。用X射线衍射(XRD)、扫描电镜(SEM)和紫外-可见漫反射(UV-vis)等手段对复合催化剂的晶型、粒径、表面形貌等进行表征,考察催化剂的可见光催化分解有机物活性。结果表明:在K2La2Ti3-x Cex O10层间插入硫化镉可以将催化剂的光谱响应范围拓展到可见光区,提高了光催化降解有机物活性。水浴法制备的CdS-K2La2Ti3-x Cex O10降解罗丹明B的降解率可以达到17.68%,而采用微波法制备的CdS-K2La2Ti3-x Cex O10降解罗丹明B的降解率可以达到33.66%。The Ce-doped-K2La2Ti3-xCexO10 （K2La2Ti3-xCexO10） was prepared via a stearic acid method,and CdS-intercalated K2La2Ti3-xCexO10 photocatalysts were prepared by microwave irradiation and water bath method,respectively.The crystal shape, particle size, and morphology of the samples were characterized by X-ray diffractometer （XRD）, electronic scanning electron microscopy（SEM）, and UV-visible spectroscopy instrument （UV-vis）.The photocatalytic properties of these cata- lysts for degradation of organics were also investigated.Results showed that, the intercalation of CdS expanded the absorption range to visible light, and the photocatalytic activity was enhanced.The photocatalytic activity of microwave-assisted CdS-K2La2Ti3-xCexO10 for the degradation of Rhodamine B was 33.66% ,whereas the degradation of water bath prepared ones was 17.68%.

关 键 词：光催化 K2La2Ti3-xCexO10 CdS插层 降解 

分 类 号：O644.1[理学—物理化学]