Affiliation:
1. Hunan Key Laboratory of Applied Environmental Photocatalysis, Changsha University, Changsha 410022, China
Abstract
Fe-BiOCl-Vo nanosheets with electron-capture centers of doped Fe and surface oxygen vacancies (Vo) for enhanced photocatalytic-Fenton performances were conducted. Compared with pristine BiOCl nanosheets, the band gap of the resulting Fe-BiOCl-Vo nanosheets was narrowed, and defective bands were introduced due to the Fe doping and Vo. Furthermore, the integrated electron trapping effect of Vo and doped Fe can efficiently drive charge transfer and separation. As a result, the photocatalytic-Fenton performances of phenol over Fe-BiOCl-Vo nanosheets were enhanced. The photocatalytic-Fenton performances of Fe-BiOCl-Vo nanosheets were enhanced two-fold and four-fold, respectively, as compared with the photocatalytic performances of Fe-BiOCl-Vo and pristine BiOCl nanosheets. During the photocatalytic-Fenton process, the multiple reactive species referring holes (h+), superoxide radicals (●O2−), and hydroxyl radicals (●OH) induced by the efficiently separated charge carriers and Fenton reaction played synergetic roles in phenol degradation and mineralization. This work provides a sophisticated structure design of catalysts for efficient charge transfer and separation, promoting photocatalytic-Fenton performance.
Funder
Scientific Research Fund of Hunan Provincial Education Department
Natural Science Foundation of Hunan Province
NSFC
Changsha University
Subject
Physical and Theoretical Chemistry,Catalysis,General Environmental Science
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