PdO负载BaV_2O_6光催化剂降解甲基橙研究  

Photocatalytic Degradation of Methyl Orange Using PdO-loaded BaV_2O_6

作　　者：周丽娜[1] 王敏[1] 韩德昌[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1100168

出　　处：《电镀与精饰》2010年第4期1-4,共4页Plating & Finishing

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

摘　　要：采用液相沉淀法制备了BaV2O6光催化剂,再用浸渍法对其进行PdO负载,并利用X-射线衍射仪、扫描电子显微镜和紫外-可见光光谱分析对催化剂进行了表征。在20W紫外灯照射下,选用甲基橙作为光催化活性的染料模型,研究了Pd的掺杂量对BaV2O6光催化活性的影响,并对其影响机制进行了探讨。实验表明,Pd的掺杂对光催化活性影响很大,当w(PdO)为1.8%时光催化效果达到最好,比纯BaV2O6光催化剂提高48%左右。The BaV2O6 phtotocatalysts were prepared by liquid phase precipitation method and then PdO- loaded BaV2O6 photocatalysts were prepared with impregnation method. The obtained samples were char- acterized by XRD, SEM and UV-Vis DRS and the effect of Pal-loaded contents on their photocatalytic activity was studied by photocatalytic oxidation of methyl orange under 20W UV light irradiation. The mechanism was also analysised. The results show that Pd can remarkably affect the photocatalytic activity. The photocatalyty activity of Pal-loaded BaV2O6 was significantly enhanced and the decolorization rate of MO can he 48% more than that of pure BaV2O6 sample when loading content is 1.8%.

关 键 词：光催化降解 甲基橙 BaV2O6 Pd负载 

分 类 号：O643.132[理学—物理化学]