Bi2WxMo1-xO6固溶体制备及光催化降解有机废水  

Preparation of Bi2WxMo1-xO6 solid solution and its photocatalytic activity for degradation of organic wastewater

作　　者：王康康[1] 谢会东[1] 柴守宁[1] 杨薇[1] 江元汝[1] 刘楷楷 Wang Kangkang;Xie Huidong;Chai Shouning;Yang Wei;Jang Yuanru;Liu Kaikai(School of Chemistry and Chemical Engineering,Xi'an University of Architecture and Technology,Xi'an 710055,Shaanxi,China)

机构地区：[1]西安建筑科技大学化学与化工学院,陕西西安710055

出　　处：《工业催化》2020年第5期41-45,共5页Industrial Catalysis

基　　金：国家自然科学基金项目(21507103);陕西省自然科学基础研究计划资助项目(2016JQ5048)。

摘　　要：光催化剂可用于催化降解有机污染废水,在废水处理方面具有良好的发展前景。分别以乙二醇、去离子水为溶剂,采用水热法在较低温度下合成Bi2WxMo1-xO6固溶体,并用XRD、SEM等对产物的形貌和结构进行表征,通过对罗丹明B的降解测试固溶体光催化降解活性。结果表明,随着W与Mo原子比(R(W/Mo))的增加,Mo6+离子逐步被W6+替代,生成了无限互溶的固溶体,光催化性能也随之发生变化,其中,以去离子水为溶剂合成的固溶体在R(W/Mo)=1.0时降解率最高,达到98%。Photocatalyst has been widely used for refractory organic wastewater treatment with some advantages.In this work,Bi2WxMo1-xO6 solid solution was prepared at low temperature by hydrothermal method using ethylene glycol and deionized water as solvent,respectively.Morphology and structure of the catalyst were characterized by SEM and XRD.The Rhodamine B solution was selected as simulated wastewater to evaluate photocatalytic degradation activity of the catalyst.The results show that,with the increase of R(W/Mo),Mo6+ions are gradually replaced by W6+.The samples exhibit different performance with the change of R(W/Mo)atomic ratio.Highest degradation efficiency is achieved over solid solution prepared at R(W/Mo)=1.0.

关 键 词：水污染防治工程 Bi2WxMo1-xO6 水热法 罗丹明B 

分 类 号：X703[环境科学与工程—环境工程] O644[理学—物理化学]