Fe^(3+)掺杂对LaCoO_3光催化性能的影响  

Effect of Fe^(3+) Doping on LaCoO_3 Photocatalytic Activity

作　　者：张春桂[1] 吴广文[1] 吴浩[1] 丁敦敦[1] 梁吉连[1] 

机构地区：[1]武汉工程大学湖北省新型反应器与绿色化学工艺重点实验室,湖北武汉430074

出　　处：《化学与生物工程》2011年第3期44-46,56,共4页Chemistry & Bioengineering

摘　　要：采用柠檬酸络合法制备了LaCo1-xFexO3纳米光催化剂,用XRD、SEM、UV-Vis等技术对样品的形貌及光吸收特性进行了表征,以高压汞灯为实验光源、以甲基橙的脱色率为指标考察了样品的光催化活性。结果表明,Fe3+的掺杂增强了LaCoO3的光吸收特性,对LaCoO3的光催化活性有较大促进作用,且掺杂量x=0.03时效果最好,对甲基橙的降解率可达75.16%,而未掺杂时只有43.25%。A series of nano-photocatalyst LaCo1-xFexO3 were prepared by citrate complexing method and characterized by XRD,SEM and UV-Vis absorbance.Using high-pressure mercury lamp as the light source,photocatalytic activities of the catalysts were evaluated with decolorizing rate of methyl orange as index.The experimental results showed that Fe3＋ doping enhanced the light absorption ability of LaCoO3 and it notably improved the photocatalytic activity of LaCoO3.When the Fe3＋ doping amount was 3%,the degradation rate of methyl orange could be up to 75.16%,which was much higher than that of 43.25% for LaCoO3.

关 键 词：LACOO3 光催化 Fe3+掺杂 柠檬酸络合法 

分 类 号：O643.36[理学—物理化学] TQ034[理学—化学]