Ag担载介孔Bi_2WO_6的制备及其太阳光催化性能  

Preparation and the sunlight photocatalytic properties of Ag-loaded mesoporous Bi_2WO_6 composite

作　　者：杨博[1] 党雪明 张秀芳[1] 

机构地区：[1]大连工业大学轻工与化学工程学院,辽宁大连116034

出　　处：《大连工业大学学报》2014年第4期258-261,共4页Journal of Dalian Polytechnic University

基　　金：国家自然科学基金资助项目(21107007)

摘　　要：采用硬模板法及液相沉淀法制备了介孔Bi2WO6(m-Bi2WO6)光催化剂,通过光还原沉积贵金属的方法制备了银担载的m-Bi2WO6复合纳米粒子(Ag/m-Bi2WO6),并利用氮气吸附脱附、XRD、XPS、DRS等测试技术对样品进行了表征。以RhB染料为目标降解物,考察了样品的光催化活性。结果表明,介孔结构能够提高Bi2WO6光催化剂的光催化性能;担载金属银,使得m-Bi2WO6催化剂的光催化性能得到了提高。Mesoporous Bi2WO6 （denoted by m- Bi2WO6 ） photocatalysts were prepared by hard template and liquid phase precipitation and then Ag loaded mesoporous Bi2WO6 composites were obtained by photoreduction method. The samples were characterized by N2 adsorption-desorption, XRD, XPS and DRS techniques. The photocatalytic activity of the photocatalysts was evaluated with Rhodamine B as the model substance, which could be enhanced by constructing mesoporous structure and loading Ag on the surface.

关 键 词：介孔钨酸铋 银 担载 光催化降解 

分 类 号：O643.361[理学—物理化学]