Keggin型多酸XW_(12)O_(40)^(n-)(X=P^(5+),Si^(4+),B^(3+),Zn^(2+))对甲基橙的光催化降解活性  

Photocatalytic Activity of Keggin Type Polyoxometalates XW_(12)O_(40)^(n-)(X=P^(5+),Si^(4+),B^(3+),Zn^(2+)) Toward Degradation of Methyl Orange

作　　者：王斌[1,2] 乌英嘎 刘哲林[3] 王晓红[1] 安智华[1,4] 曾俊 杨鹏 刘宗瑞 WANG Bin;WU Yingga;LIU Zhelin;WANG Xiaohong;AN Zhihua;ZENG Jun;YANG Peng;LIU Zongrui(College of Chemistry and Chemical Engineering, Inner Mongolia University for the Nationalities, Tongliao 028043, China;School of Chemistry ＆ Environment Engineering, Changchun University of Science and Technology, Changchua 130022, China;Departmennt of Chemistry, New York University, New York NY 10003, USA;Inner Mongolia Key Lab of Carbon Nanomaterials, Tongliao 028000, China)

机构地区：[1]内蒙古民族大学化学化工学院,通辽028043 [2]内蒙古自治区纳米碳材料重点实验室,通辽028000 [3]长春理工大学化学与环境工程学院,长春130022 [4]纽约大学化学系,纽约ny10003

出　　处：《高等学校化学学报》2018年第5期1003-1008,共6页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:21401012;21661026);内蒙古自治区自然科学基金(批准号:2015BS0207);内蒙古自治区纳米碳材料重点实验室开放课题(批准号:MDK2017025)资助~~

摘　　要：通过常规水溶液合成法制备了一系列含不同中心杂原子的Keggin型多金属氧酸盐XW_(12)O_(40)^(n-)(简写为XW_(12),X=P^(5+),Si^(4+),B^(3+),Zn^(2+)),并利用粉末X射线衍射(PXRD)、红外光谱(FTIR)和拉曼光谱(Raman)对其结构进行表征,利用紫外-可见光谱(UV-Vis)和循环伏安曲线(CVs)对其光、电活性进行了研究.以甲基橙为光催化降解底物,考察了中心杂原子、催化剂用量、底物分子浓度和体系的p H值等对多金属氧酸盐光催化降解甲基橙活性的影响.结果表明,含不同中心杂原子的Keggin型多金属氧酸盐对甲基橙的光催化降解活性顺序为Zn W_(12)>PW_(12)>Si W_(12)>BW_(12).A series of Keggin type polyoxometalates with different central heteroatoms was prepared by the conventional aqueous synthesis method and characterized by powder X-Ray diffraction（ PXRD）,infrared spectroscopy（ FTIR） and Raman spectroscopy（ Raman）. The optical and electrical activities of the polyoxometalates were studied by UV-Vis spectroscopy and cyclic voltammetry（ CV）. The influenece of central heteroatoms,catalyst dosage,substrate concentration and p H values on photocatalytic activity of the polyoxometalates toward methyl orange were investigated. The photodegradation activity of different Keggin type polyoxometalates toward methyl orange is in the order of Zn W（12）PW（12）Si W（12）BW（12）.

关 键 词：多金属氧酸盐 光催化活性 降解 有机染料 

分 类 号：O644[理学—物理化学] O611.3[理学—化学]