钒钛磁铁矿尾矿/高岭土复合整体材料的制备及光催化降解罗丹明B的研究  

Preparation of vanadium-titanium magnetite tailings/kaolin composite monolithic materials and photocatalytic degradation of rhodamine B

作　　者：刘亚雯 廖承绪 刘林 任冬雪 杨天凤 朱霞萍[1] 孙永华[1] LIU Ya-wen;LIAO Cheng-xu;LIU Lin;REN Dong-xue;YANG Tian-feng;ZHU Xia-ping;SUN Yong-hua(College of Materials and Chemistry&Chemical Engineering,Chengdu University of Technology,Chengdu 610059,China;Chengdu Hangli(Group)Industrial Co.,Ltd,Chengdu 611930,China;Panxi Vanadium and Titanium Inspection and Testing Institute,Panzhihua 617000,China)

机构地区：[1]成都理工大学材料与化学化工学院,四川成都610059 [2]成都航利(集团)实业有限公司,四川成都611930 [3]攀西钒钛检验检测院,四川攀枝花617000

出　　处：《化学研究与应用》2024年第3期522-531,共10页Chemical Research and Application

基　　金：国家自然科学基金(42267007)资助。

摘　　要：在钒钛磁铁矿的开发利用过程中形成了大量堆积的尾矿,既造成土壤污染,还危害周边居民的身体健康。因此,开发钒钛磁铁矿尾矿的有效利用方法具有重要意义。本实验使用钒钛磁铁矿尾矿和高岭土为基体、硅溶胶为粘接剂、氯化铵为改性剂,制备了钒钛磁铁矿尾矿/高岭土复合整体材料,考察了制备条件对材料光催化降解罗丹明B的影响,使用XRF、XRD、SEM、BET、XPS和UV-Vis DRS对制备的材料进行了表征。结果表明,制备的复合光催化材料在60 min内对罗丹明B的去除率达到了71.5%,4次重复使用后,对罗丹明B的光催化降解仍具有一定效果。研究对钒钛磁铁矿尾矿的整体利用及“以废治废”综合利用有一定意义。A large amount of accumulated tailings is formed during the development and utilization of vanadium-titanium magnetite,which causes soil pollution and also jeopardizes the health of the surrounding residents.Therefore,it is of great significance to develop effective utilization methods for vanadium-titanium magnetite tailings.In this experiment,vanadium-titanium magnetite tailings/kaolin composites were prepared by using mixed powder of vanadium-titanium magnetite tailings and kaolin as the matrix,silica sol as the bonding agent,and ammonium chloride as the modifying agent.The effect of preparation conditions on the photocatalytic degradation of rhodamine B was investigated,and the prepared material was characterized using XRF,XRD,SEM,BET,XPS and UVVis DRS.The results showed that the prepared composite photocatalytic material removed 71.5%of rhodamine B within 60 min,and the photocatalytic degradation of rhodamine B was still effective after four times of reuse.The study is of significance for the overall utilization of vanadium and titanium magnetite tailings and the comprehensive utilization of "using waste to treat waste".

关 键 词：钒钛磁铁矿尾矿 氯化铵 光催化降解 罗丹明B 

分 类 号：O614.8[理学—无机化学]