卤氧化铋基改性光催化剂的制备及环境修复领域的应用进展

Preparation of Bismuth Oxyhalide-Based Modified Photocatalysts and Application Progress in Environment Remediation

卤氧化铋(BiOX,X=Cl,Br,I)作为一种新型光催化剂,因其独特的层状结构和适宜的禁带宽度,受到环境领域研究者的广泛关注。然而,光生电荷易复合的不足限制了其进一步应用,对BiOX进行改性以提高其光催化活性是解决上述问题的关键手段。文中综述了近年来改性卤氧化铋光催化技术方面的研究进展,详细阐述了富铋型、掺杂、缺陷、异质结、形貌调控等多种改性BiOX的合成策略,并总结了改性BiOX在环境修复领域中的发展现状,最后对改性BiOX光催化技术未来的发展趋势及面临的挑战进行了总结和展望。

As a novel photocatalyst,bismuth oxyhalide(BiOX,X=Cl,Br,I),has attracted extensive attention from environmental researchers due to its unique layered structure and suitable band gap.However,the lack of rapid recombination of photoelectron-hole pairs limits its further applications.Modification of BiOX to improve its photocatalytic activity is a key strategy to solve the above issue.In this review,the research progress in photocatalytic technology of modified bismuth oxyhalide in recent years is summarized,and the synthesis strategies of bismuth-rich BiOX,doping,defect,heterojunction,morphology regulation and other modified BiOX are described in detail.Moreover,the development status of modified BiOX in the field of environmental remediation is reviewed.Finally,the development trend and challenges of modified BiOX photocatalytic technology in the future are summarized and prospected.