羊毛负载BiOBr的制备与光催化性能研究  

Study on preparation and photocatalytic proformance of wool-loaded BiOBr

作　　者：佟永纯 王清云 李守博 魏玉娟 常国选 TONG Yong-chun;WANG Qing-yun;LI Shou-bo;WEI Yu-juan;CHANG Guo-xuan(College of Chemistry and Chemical Engineering of Hexi University,Key Laboratory of Hexi Corridor Resources Utilization of Gansu,Zhangye 734000,Ganshu,China)

机构地区：[1]河西学院化学化工学院,甘肃省河西走廊特色资源利用重点实验室,甘肃张掖734000

出　　处：《云南大学学报（自然科学版）》2021年第4期760-765,共6页Journal of Yunnan University(Natural Sciences Edition)

基　　金：国家自然科学基金(21865007).

摘　　要：以经过物理和化学方法处理的羊毛为载体制备了羊毛负载BiOBr光催化剂,研究了BiOBr负载量对罗丹明B降解性能的影响,同时测定了该光催化剂的稳定性.研究表明,经过预处理的羊毛能与BiOBr通过配位作用相结合,固载稳定,同时配位作用限制了BiOBr粒径的增长,负载的BiOBr平均粒径在30~50 nm左右,为高效催化提供了有利条件.负载量为30%时的光催化剂降解性能最好,90 min时降解率达到98.5%.该催化剂稳定性较高,重复使用5次对罗丹明B的降解率仍达71.5%.羊毛负载BiOBr光催化剂制备简单,载体天然、廉价、无毒,符合绿色化学理念,具有很高的应用价值.The wool-loaded BiOBr photocatalyst was prepared using physicochemically treated wool as a carrier.The effect of BiOBr loading on the degradation performance of Rhodamine B was studied,and the stability of the photocatalyst was measured.The result has shown that the pretreated wool could be combined with BiOBr through coordination,and the solid load was stable.At the same time,the coordination restricts the growth of BiOBr particle size.The average particle size of the loaded BiOBr is about 30−50 nm,which provides favorable conditions for efficient catalysis.The degradation performance of the photocatalyst is best when the loading is 30%,and the degradation rate reaches 98.5% at 90 min.The catalyst has high stability,and the degradation rate of Rhodamine B is still 71.5% after repeated use for 5 times.The wool-loaded BiOBr photocatalyst is simple to prepare,the carrier is natural,cheap,non-toxic,which conforms to the concept of green chemistry and has high application value.

关 键 词：光催化 羊毛 BiOBr 罗丹明B 催化剂稳定性 

分 类 号：O643.36[理学—物理化学]