卤氧化铋在光催化降解有机废水中的应用及其改性研究  

Application and Modification of Bismuth Oxyhalide in Photocatalytic Degradation of Organic Wastewater

作　　者：朱春山[1] 王明锐 孙万鹏 张宾朋 ZHU Chunshan;WANG Mingrui;SUN Wanpeng;ZHANG Binpeng(Henan University of Technology,Zhengzhou 450001,China)

机构地区：[1]河南工业大学,河南郑州450001

出　　处：《河南科技》2024年第5期77-81,共5页Henan Science and Technology

基　　金：河南省重点研发与推广专项(232102320084);河南工业大学高层次人才启动项目(2021BS025)。

摘　　要：【目的】卤氧化铋BiOX(X=Cl、Br、I)因其独特的层状结构和禁带宽度在光催化反应中表现出优异的活性与稳定性,已成为光催化材料领域极具前景的材料。因此,对卤氧化铋进行改性,使其拥有更高的光催化性能成为近年来研究的热点。【方法】概述了有机废水的污染现状及主要处理方式,特别是光催化降解技术的研究现状。综述了BiOX(X=Cl、Br、I)光催化材料在有机污染物降解方面的应用及改性措施,改性措施主要包括金属掺杂、异质结构筑和碳材料复合改性。【结果】关于金属掺杂改性和异质结构筑改性的方法研究得最多,光催化降解污染物的效率高,但存在掺杂的金属离子难回收,会对环境造成二次污染,构建异质结中存在逆反应、光屏蔽、副反应等问题。相较于以上两种改性方法,采用碳材料复合改性的方法通过吸附与光催化耦合提高光催化降解效率,可以降低催化剂的成本。【结论】通过对三种改性方法的比较,为卤氧化铋BiOX(X=Cl、Br、I)材料进行改性提供了参考与借鉴。生物碳是一种低成本、环境友好且可持续的含碳材料,采用生物碳对催化剂进行改性,可为解决目前迫在眉睫的环境有机染料污染和抗生素污染问题提供新方案。[Purposes]Bismuth halide oxide BiOX(X=Cl,Br,I)has become a highly promising material in the field of photocatalytic materials due to its unique layered structure and band gap width,demonstrating excellent activity and stability in photocatalytic reactions.Therefore,the modification of bismuth oxghalide to make it have higher photocatalytic performance has become a research hotspot in recent years.[Methods]This article provides an overview of the pollution status and main treatment methods of organic wastewater,especially the research status of photocatalytic degradation technology.Subse quently,the application and modification measures of BiOX(X=Cl,Br,I)photocatalytic materials in the degradation of organic pollutants were reviewed.The modification measures mainly include metal doping,heterostructure construction,and carbon material composite modification.[Findings]The methods of metal doping modification and heterojunction construction modification have been studied the most,with high efficiency in photocatalytic degradation of pollutants.The disadvantage is that the doped metal ions are difficult to recover and cause secondary pollution to the environment.There are problems that need to be solved in the construction of heterojunctions,such as reverse reactions,light shielding,and side reactions.Compared to the above two modification methods,using carbon material composite modification can improve the photocatalytic degradation efficiency by coupling adsorption and photocatalysis,and also reduce the cost of the catalyst.[Conclusions]By comparing these three modification methods,reference is provided for the modification of bismuth oxghalide BiOX(X=Cl,Br,I)materials.Biochar is a low-cost,environmentally friendly,and sustainable carbon containing material.The use of biochar to modify catalysts provides a new solution to the urgent problems of organic dye pollution and antibiotic pollution in the environment.

关 键 词：卤氧化铋 光催化 改性 碳材料 负载 

分 类 号：O643.36[理学—物理化学] O644.1[理学—化学]