CdS-K2La2Ti(3-x)AgxO(10)复合物及其光催化制氢的性能  

Synthesis of CdS-K_2La_2Ti_(3-x)Ag_xO_(10) catalyst and its photocatalytic property

作　　者：梁英华[1] 崔文权[1] 刘利[1] 齐跃丽[1] 

机构地区：[1]河北联合大学化学工程学院唐山063009

出　　处：《功能材料》2013年第7期974-978,共5页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(51202056,51172063,50972037);河北省青年科学基金资助项目(E2012401070)

摘　　要：采用硬脂酸法合成Ag掺杂的K2La2Ti3-xAgxO10复合催化剂,并通过微波辅助法进行酸交换、胺柱撑、离子交换以及硫化等步骤制备了CdS插层的K2La2Ti3-xAgxO10。利用X射线粉末衍射(XRD)、场发射扫描电子显微镜(SEM)、X射线能谱仪(EDX)、紫外-可见漫反射吸收光谱(UV-Vis)和光致发光光谱(PL)等技术对催化剂进行表征,考察了催化剂的光催化制氢活性。结果表明,Ag离子掺杂和CdS插层的协同作用拓展了催化剂的可见光吸收范围,提高了光催化活性,催化剂在可见光照射3h的产氢量为3.27mmol/(g.cat)。K2La2Ti3-xAgxO10 powder was obtained by a stearic acid method.CdS-intercalated K2La2Ti3-x-AgxO10 photocatalysts were synthesized via ion-exchange reaction,butylamine pillaring and sulfuration processes under the assistance of the microwave irradiation.The photocatalysts was determined by means of powder X-ray diffraction（XRD）,scanning electron microscope（SEM）,X-ray energy dispersive spectroscopy（EDS）,ultraviolet-visible diffuse reflection spectra（UV-Vis）,X-ray photoelectron spectroscopy（XPS）,photoluminescence measurement（PL） and so on.The photocatalytic activities of these composite compounds for hydrogen production were also investigated under UV and visible light irradiation.The results revealed that the Ag irons doping and CdS-intercalated K2La2Ti3-xAgxO10 photocatalysts can widen the range of absorb visible light.The photocatalytic activities for hydrogen production of the CdS-intercalated K2La2Ti3-xAgxO10 photocatalyst was 3.27mmol/（g·cat） under visible light irradiation,respectively,after 3h irradiation.

关 键 词：插层复合 K2LA2TI3O10 CDS AG掺杂 

分 类 号：TB332[一般工业技术—材料科学与工程]