Fabrication of oxygen vacancy-rich 3D/2D BiO1-XBr/BiOCl heterostructures towards efficient charge separation for enhanced photodegradation activity
Source abstract
Abstract
Abstract In this work, oxygen vacancy (OV)-rich 3D/2D BiO1-XBr/BiOCl heterostructures were prepared successfully via a simple hydrothermal treatment method. The photocatalytic degradation activities for a series of BiO1-XBr/BiOCl composites were evaluated through visible-light-driven tetracycline (TC) degradation. The result demonstrated that suitable ratio of BiO1-X Br/BiOCl (BB-60) showed significantly improved photodegradation activity. The improved photocatalytic performance was mainly attributed to the synergistic effect of 3D/2D heterojunction and OVs. The relatively small 2D BiOCl nanosheets deposit on 3D BiO 1-XBr to form 3D/2D heterostructure with more contact areas and active sites, which improve the separation of photogenerated charges. In addition, rich OVs can not only promote the separation of electron-hole pair but also improve the capability of visible light absorption for photocatalysts. The possible photocatalytic reaction mechanism of BB-60 was also revealed by active species trapping experiments. Finally, this study brought a new opportunity to rationally design OV-rich 3D/2D heterojunction for the enhanced photocatalytic ability.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced Photocatalysis Techniques · Ga2O3 and related materials · Gas Sensing Nanomaterials and Sensors
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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