BiFeO3光催化剂的制备及降解性能研究
Synthesis and degradation performance of BiFeO3 photocatalyst
张海明 1王宇威 1赵娟 1吕博宇 1刘京 1樊丽权1
作者信息
- 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
- 折叠
摘要
通过水热法和溶胶-凝胶法合成3种不同形貌的BiFeO3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BiFeO3,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BiFeO3(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BiFeO3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.
Abstract
In this study,three BiFeO3 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 BiFeO3 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 BiFeO3 promote rapid nucleation and favor the reduction of the cube size.In addition,the BiFeO3photocatalyst 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/BiFeO3/形貌/亚甲基蓝/盐酸四环素Key words
photocatalysis/degradation/BiFeO3/morphology/methylene blue/tetracycline hydrochloride引用本文复制引用
基金项目
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)
出版年
2024
NETL
NSTL
万方数据