CAJ | 학술논문

采用液相沉淀法制备了银(Ag~+)掺杂钒酸铁(FeVO_4)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FeVO_4晶型,但引起了晶格畸变和膨胀.适量Ag的掺杂可提高FeVO_4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FeVO_4对甲基橙溶液的脱色率较未掺杂前提高21%左右.
채용액상침정법제비료은(Ag~+)참잡범산철(FeVO_4)광최화제.채용XRD、SEM、EDS、BET화XPS등수단대양품적성능진행료표정분석,병이갑기등위목표강해물,고찰료최화제재절능등조사하적광최화활성.결과표명,Ag적참잡몰유개변FeVO_4정형,단인기료정격기변화팽창.괄량Ag적참잡가제고FeVO_4적광최화성능,재소진행실험적조건하,범산은최가참잡량위1%(질량분수)시,참잡후적FeVO_4대갑기등용액적탈색솔교미참잡전제고21%좌우.
Silver(Ag~+) doped iron(Ⅲ) vanadate( FeVO_4) 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~+/FeV_O4 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 FeVO_4.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 FeVO_4.