铋基半导体纳米材料的改性及光催化研究进展
Research progress on modification and photocatalytic degra-dation performance of Bismuth-based semiconductor nanoma-terials
韩梦阳 1陈飘 1张晓燕 1张胜余 1杨水金1
作者信息
- 1. 湖北师范大学化学化工学院,湖北 黄石 435002
- 折叠
摘要
光催化技术在解决能源危机和环境污染方面受到了广泛的关注,其研究也取得了很多进展.光催化剂在不同领域的作用机制不同,大多数光催化剂都需要克服带隙宽、光生电荷易复合、电荷利用率低等缺陷.由于铋基光催化剂的价带中存在Bi 6s和O 2p杂化轨道,使得大多数Bi基光催化剂具有较窄的可见光利用带隙,因此成为研究热点.本文以铋基半导体为研究对象,针对铋基半导体材料的优缺点,在简单介绍 3种Fe3+掺杂BiOCOOH、氧空位BiOCl/Bi4O5Br2 和CoWO4/Bi2WO6 Z型异质结铋基半导体纳米材料改性研究的基础上,系统综述铋基半导体纳米材料的光催化降解性能及其改性研究进展,以期为相关研究提供参考.
Abstract
Photocatalysis technology has been widely concerned in solving energy crisis and environmental pollution,and has made a lot of achievements.As the action mechanism of photocatalysts in different fields is different,most photocatalysts need to overcome the defects of wide band gap,easy recombination of photogen-erated charge and low charge utilization rate.Due to the existence of Bi 6s and O 2p hybrid orbitals in valence bands of Bi-based photocatalysts,most Bi-based photocatalysts have relatively narrow visible light utilizable band gaps,so more and more attention has to be paid.Bi-based semiconductors was taken as research object,focusing on the advantages and disadvantages of bismuth-based semiconductor materials.It briefly introduced the modification research of three Bi-based semiconductor nanomaterials designed and synthesized by our re-search group,namely trivalent iron doped BiOCOOH,oxygen vacancy BiOCl/Bi4 O5 Br2,and CoWO4/Bi2 WO6 Z-type heterojunction.The research progress in the modification and photocatalytic degradation performance of Bi-based semiconductor nanomaterials was systematically introduced.
关键词
铋基半导体/光催化/异质结/催化剂/光降解Key words
Bi-based semiconductor/photocatalysis/heterojunction/catalyst/photodegradation引用本文复制引用
基金项目
湖北省大学生创新训练项目(S202310513044)
出版年
2024
NETL
NSTL
维普
万方数据