Ag^+掺杂FeVO_4光催化剂的制备及光催化性能  

Synthesis and photocatalytic property of Ag^+/FeVO_4 photocatalyst

作　　者：王敏[1,2] 王里奥[2] 储刚[3] 孙玉凤[1] 张文杰[1] 

机构地区：[1]沈阳理工大学环境与化学工程学院,辽宁沈阳110168 [2]重庆大学资源及环境科学学院,重庆400044 [3]辽宁石油化工大学化学及材料学院,辽宁抚顺113001

出　　处：《功能材料》2010年第2期228-231,共4页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(50774074);国家重点基础研究发展计划(973计划)资助项目(2005CB121104)

摘　　要：采用液相沉淀法制备了银(Ag+)掺杂钒酸铁(FeVO4)光催化剂。采用XRD、SEM、EDS、BET和XPS等手段对样品的性能进行了表征分析,并以甲基橙为目标降解物,考察了催化剂在节能灯照射下的光催化活性。结果表明,Ag的掺杂没有改变FeVO4晶型,但引起了晶格畸变和膨胀。适量Ag的掺杂可提高FeVO4的光催化性能,在所进行实验的条件下,钒酸银最佳掺杂量为1%(质量分数)时,掺杂后的Fe-VO4对甲基橙溶液的脱色率较未掺杂前提高21%左右。Silver（Ag^＋） doped iron（Ⅲ） vanadate（FeVO4） sanples were prepared by the liquid phase precipitation method.The obtained samples were characterized by XRD,SEM,BET and XPS and their photocatalytic activity was studied by photocatalytic oxidation of methyl orange under energy-saving lamp irradiation.The XRD patterns indicated that Ag^＋/FeVO4 photocatalysts consist of triclinic phase and the lattice was distorted beacause of doping Ag.Doping with the appropriate Ag content can improve the photocatalytic activity of FeVO4.In the experimental conditions used,the optimal photocatalytic activity for all the prepared samples is reached when the Ag doping was 1wt%.The decoloration rate of MO was more 20% or so than that of pure FeVO4.

关 键 词：钒酸铁 光催化 银掺杂 甲基橙溶液 

分 类 号：O643[理学—物理化学]