钨酸铋多级孔材料的制备及光催化性能研究  

Preparation and photocatalytic properties of hierarchical porous bismuth tungstate materials

作　　者：宁波[1,2] 李冰 于飞 王磊[1] 尚庆坤[2] NING Bo;LI Bing;YU Fei;WANG Lei;SHANG Qing-kun(School of Food Production and Biotechnology,Changchun Vocational Institute of Technology,Changchun 130033,China;Faculty of Chemistry,Northeast Normal University,Changchun 130024,China)

机构地区：[1]长春职业技术学院食品与生物技术分院,吉林长春130033 [2]东北师范大学化学学院,吉林长春130024

出　　处：《东北师大学报（自然科学版）》2019年第4期98-102,共5页Journal of Northeast Normal University(Natural Science Edition)

基　　金：吉林省科技厅国际科技合作项目（20140414021GH)

摘　　要：采用高分子辅助的溶胶-凝胶-冷冻干燥技术结合高温煅烧过程成功制备了钨酸铋(Bi 2WO 6)多级孔材料.利用扫描电镜(SEM)、热重分析(TG)、X射线粉末衍射(XRD)、紫外-可见光谱(UV-Vis)和吸附-脱附(BET)等多种分析测试手段对材料的组成、结构等特性进行了表征,并通过降解染料罗丹明B(RhB)研究了材料的光催化性能.结果表明:所制备的Bi 2WO 6多级孔材料具良好的光催化性能,在150 min内Bi 2WO 6多级孔材料对RhB的降解率达85%以上.Hierarchically porous bismuth tungstate material was successfully prepared synthesized by a novelpolymer-assistedsol-gelfreeze-drying method combined with a high-temperature calcination process.The composition and structure properties were characterized by SEM,TG,XRD,UV-Vis and BET.The photocatalytic properties of the samples were analyzed by degrading the dye Rhodamine B(RhB).The results show that the degradation rate of RhB by porous Bi 2WO 6 material is over 85%in 150 min,indicating that the prepared hierarchically porous Bi 2WO 6 material has good photocatalytic performance due to hierarchically porous as micro-nano reactor.

关 键 词：冷冻干燥 溶胶-凝胶 多级孔材料 钨酸铋 光催化 

分 类 号：O643.3[理学—物理化学]