光催化
罗丹明B
异质结
材料科学
四方晶系
降级(电信)
单斜晶系
光化学
化学工程
相(物质)
光电子学
化学
晶体结构
结晶学
催化作用
有机化学
工程类
电信
计算机科学
作者
Alana O.C. Andrade,Luís Henrique da Silveira Lacerda,M.M. Lage Júnior,S. K. Sharma,M.E.H. Maia da Costa,Odivaldo C. Alves,Evelyn C. S. Santos,Clenilton Costa dos Santos,A.S. de Menezes,Miguel A. San-Miguel,Francisco Moura Filho,E. Longo,M. A. P. Almeida
标识
DOI:10.1016/j.optmat.2023.113701
摘要
We report a successful fabrication of BiOBr/ZnWO4 heterojunction with enhanced photocatalytic performance for degrading Rhodamine B dye validated by joint experimental and theoretical approaches. The structural and microstructural analysis indicate that the heterostructures consist of a mixed tetragonal/monoclinic phase with enhanced surface area, which is crucial for photocatalysis. The results indicate increased photocatalytic activity for heterojunctions since BiOBr/ZnWO4 heterostructure showed a better degradation rate for Rhodamine B dye as compared to BiOBr due to higher surface area, pore size, and better photogenerated electron-hole pair separation efficiency. Additional analyses using isopropanol, benzoquinone, and sodium azide scavengers analysis were performed, showing that superoxide radicals (O2′) as the main responsible for the photocatalytic degradation of investigated materials. The theoretical analysis offers a complete overview of the composition and electronic structure of the interface.
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