化工环保2024，Vol.44Issue(2)：196-204,9.DOI:10.3969/j.issn.1006-1878.2024.02.006
BiOCl/g-C3N4-Br光催化降解罗丹明B
Photocatalytic degradation of RhB by BiOCl/g-C3N4-Br
摘要
Abstract
A binary heterojunction photocatalyst,BiOCl/g-C3N4-Br,was synthesized by in-situ growth method and characterized by XRD,SEM,FTIR,XPS,and UV-vis DRS.The photocatalytic degradation activity of BiOCl/g-C3N4-Br to RhB under simulated visible light irradiation was investigated.The experimental results show that:Compared to g-C3N4-Br and BiOCl alone,BiOCl/g-C3N4-Br exhibits significantly improved photocatalytic activity,and under the conditions of RhB mass concentration 20 mg/L,BiOCl/2%-g-C3N4-Br amount 5 g/L,fluorescent lamp power 40 W,and irradiation time 90 min,the RhB removal rate can reach 98%;After 4 cycles of reusing,the RhB removal rate gradually decreases from 98%to 90%,demonstrating good stability and reusability of the photocatalyst.The oxidation-reduction reactions in the photocatalytic degradation process occur on the surface of BiOCl and g-C3N4-Br,respectively.The Z-scheme heterojunction formed on the highly compact interface between BiOCl and g-C3N4-Br achieves rapid separation of electrons and holes and reduces their recombination rate inside the catalyst,thereby enhancing the catalytic performance.关键词
光催化/异质结/石墨相氮化碳/氯氧化铋/罗丹明BKey words
photocatalysis/heterojunction/graphitic phase carbon nitride(g-C3N4)/bismuth oxychloride(BiOCl)/Rhodamine B(RhB)分类
资源环境引用本文复制引用
孙天奇,陈勇号,巫衡,朱雨婷,董延茂,赵丹..BiOCl/g-C3N4-Br光催化降解罗丹明B[J].化工环保,2024,44(2):196-204,9.基金项目
苏州区域水质改善和水生态安全技术与综合示范项目(2017ZX07205) （2017ZX07205）
苏州市产业化前瞻项目(SYG201744). （SYG201744）
