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首页> 外文期刊>RSC Advances >Novel recyclable BiOBr/Fe3O4/RGO composites with remarkable visible-light photocatalytic activity
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Novel recyclable BiOBr/Fe3O4/RGO composites with remarkable visible-light photocatalytic activity

机译：新型可再循环BioBr / Fe3O4 / Rgo复合材料，具有显着的可见光光催化活动

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Magnetic BiOBr/Fe _(3) O _(4) /RGO composites with remarkable photocatalytic capability were prepared by a simple hydrothermal method to load 3D flower-like microspherical BiOBr onto the surface of Fe _(3) O _(4) /RGO. Under visible-light irradiation ( λ > 420 nm), the BiOBr/Fe _(3) O _(4) /RGO composite with 56% mass percentage of Fe _(3) O _(4) /RGO shows the optimal removal ability for Rhodamine B, and the total removal efficiency is 96%. The coupling of Fe _(3) O _(4) /RGO and BiOBr elevates the conduction band of BiOBr, which enhances the reduction level of BiOBr/Fe _(3) O _(4) /RGO composites. Ultimately, based on experiments and theoretical calculations, an n-type Schottky contact formed at the heterojunction interface between RGO doped with Fe _(3) O _(4) and BiOBr is proposed for photoexcited charge transfer. The RGO with great adsorptivity plays a major role in the photocatalysts composed of BiOBr, RGO and Fe _(3) O _(4) . Further, BiOBr/Fe _(3) O _(4) /RGO composites with permanent-magnetism can be recovered and reused easily by external magnetic field and maintain a total removal efficiency of 90% after four cycles.
机译：磁性BioBr / Fe _（3）o _（4）/ rgo复合材料通过简单的水热方法制备了卓越的光催化能力，以将3D花状微球体Biobr称为Fe _（3）O _（4）/ rgo。在可见光照射（λ> 420nm）下，BioBr / Fe _（3）o _（4）/ rgo复合材料，具有56％的Fe _（3）O _（4）/ rgo显示出最佳的去除罗丹明B的能力，总去除效率为96％。 Fe _（3）O _（4）/ RGO和BioBR的偶联升高了BioBR的导通带，其增强了BioBR / Fe _（3）O _（4）/ Rgo复合材料的减少水平。基于实验和理论计算，基于实验和理论计算，提出了在掺杂有Fe _（3）O _（4）和BioBR的RGO之间的异质结界面处形成的n型肖特基触点，用于光透射电荷转移。具有良好吸附性的RGO在BioBR，RGO和Fe _（3）O _（4）组成的光催化剂中起着重要作用。此外，可以通过外部磁场恢复和重复使用具有永磁体的BioBr / Fe _（3）O _（4）/ Rgo复合材料，并在四个循环后保持总去除效率为90％。

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