BiFeO_(3)光催化剂的制备及降解性能研究  

Synthesis and degradation performance of BiFeO_(3) photocatalyst

作　　者：张海明 王宇威 赵娟 吕博宇 刘京 樊丽权 ZHANG Hai-ming;WANG Yu-wei;ZHAO Juan;LV Bo-yu;LIU Jing;FAN Li-quan(School of Materials Science and Engineering,Heilongjiang Provincial Key Laboratory of Polymer Matrix Composites,Qiqihar University,Heilongjiang Qiqihar 161006,China)

机构地区：[1]齐齐哈尔大学材料科学与工程学院,黑龙江省聚合物基复合材料重点实验室,黑龙江齐齐哈尔161006

出　　处：《齐齐哈尔大学学报（自然科学版）》2024年第5期41-47,共7页Journal of Qiqihar University(Natural Science Edition)

基　　金：黑龙江省教育厅基本科研业务专项课题(145309603);黑龙江省重点研发计划指导类项目(GZ20210034);黑龙江省聚合物基复合材料重点实验室开放课题(CLKFKT2021B3)。

摘　　要：通过水热法和溶胶-凝胶法合成3种不同形貌的BiFeO_(3)光催化剂,并对光催化活性和降解性能进行了详细分析。使用PEG2000作为导向剂合成的立方体BiFeO_(3),对亚甲基蓝和四环素的降解效率最高,在可见光照射120min后,污染物的降解率分别达到了81.0%和70.5%。所获得的立方体BiFeO_(3)(100)晶面的高暴露度等因素加速了核化并有利于减小立方体的尺寸。此外,基于铁氧体磁性半导体的BiFeO_(3)光催化剂表现出较高的铁磁性,有效解决了催化剂与产物分离困难、资源浪费以及对水的二次污染等问题。In this study,three BiFeO_(3) photocatalysts with different morphologies were synthesized by hydrothermal method and sol-gel method,and their photocatalytic activity and degradation performance were analyzed in detail.In particular,the cubic BiFeO_(3) synthesized using PEG2000 as a directing agent demonstrated the highest degradation efficiency for MB and TC,with degradation rates of 81.0%and 70.5%,respectively,after 120 min of visible light irradiation.Factors such as the high exposure of the(100)crystal plane of the obtained cubic BiFeO_(3) promote rapid nucleation and favor the reduction of the cube size.In addition,the BiFeO_(3)photocatalyst based on ferrite magnetic semiconductor exhibits high ferromagnetism,which effectively solves the problems of difficult separation between catalyst and product,waste of resources,and secondary pollution of water.

关 键 词：光催化 降解 BiFeO_(3) 形貌 亚甲基蓝 盐酸四环素 

分 类 号：O644.1[理学—物理化学]