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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Z-scheme and multipathway photoelectron migration properties of a bayberry-like structure of BiOBr/AgBr/LaPO4 nanocomposites: Improvement of photocatalytic performance using simulated sunlight
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Z-scheme and multipathway photoelectron migration properties of a bayberry-like structure of BiOBr/AgBr/LaPO4 nanocomposites: Improvement of photocatalytic performance using simulated sunlight

机译：BABR / AGBR / LAPO4纳米复合材料的Baybery样结构的Z-Scheme和MultiPathway光电子迁移性质：使用模拟阳光改善光催化性能

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摘要

In this paper, bayberry-like BiOBr/AgBr/LaPO4 nanocomposites were synthesized by microwave-assisted hydrothermal treatment. The composition, structure, and morphology of BiOBr/AgBr/LaPO4 nanocomposites were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), UV-visible diffuse reflectance (UV-vis/DRS), high-power transmission electron microscopy (HR-TEM), scanning electron microscopy (SEM), and N-2 adsorption-desorption measurements. The results show that the light absorption capacity of BiOBr/AgBr/LaPO4 is clearly enhanced and that a bayberry-like structure is more likely to produce diffraction and reflection of light on the surfaces of composites. AgBr in the composite is capable of reducing to Ag-0 after light irradiation. Ag-0, acting as a charge-transfer mediator, can be the medium, thus forming a Z-scheme structure. At the same time, the surface plasmon resonance (SPR) effect of Ag-0 exhibits higher activity in the simulated sunlight photocatalysis process in BiOBr/AgBr/LaPO4. The photoelectrochemical methods further indicate that BiOBr/AgBr/LaPO4 possesses the best electron-hole pair separation ability. Furthermore, two different interface electron transfer modes and multipathway photoelectron migration in the composite are determined. (C) 2019 Elsevier B.V. All rights reserved.
机译：本文通过微波辅助水热处理合成了Baybery的BioBR / Agbr / Lapo4纳米复合材料。通过X射线衍射（XRD），X射线光电子谱（XPS），UV可见光散射反射（UV-VIS / DR），高功率，对BioBR / Agbr / Lapo4纳米复合材料的组成，结构和形态表征。透射电子显微镜（HR-TEM），扫描电子显微镜（SEM）和N-2吸附 - 解吸测量。结果表明，BioBR / AGBR / LAPO4的光吸收能力明显增强，并且叫笛状结构更可能在复合材料表面上产生光的衍射和反射。在光照射后，复合材料中的AGBR能够将AG-0减少。 Ag-0作为电荷转移介体，可以是培养基，从而形成Z方案结构。同时，Ag-0的表面等离子体共振（SPR）效应在BioBR / Agbr / Lapo4中的模拟阳光光催化过程中表现出更高的活性。光电化学方法进一步表明BioBR / Agbr / Lapo4具有最佳的电子孔对分离能力。此外，确定了两种不同的界面电子传递模式和复合材料中的多汗波光电子迁移。 （c）2019 Elsevier B.v.保留所有权利。

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