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首页> 外文期刊>RSC Advances >Novel Cu2S quantum dots coupled flower-like BiOBr for efficient photocatalytic hydrogen production under visible light
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Novel Cu2S quantum dots coupled flower-like BiOBr for efficient photocatalytic hydrogen production under visible light

机译：新型Cu2S量子点与花状BiOBr耦合，可在可见光下有效地光催化制氢

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摘要

Cu2S quantum dots (QDs) coupled three-dimensional (3D) flower-like hierarchical BiOBr (QDs-Cu2S/BiOBr) were prepared via a simple precipitation method. The Cu2S QDs, with an average diameters of 10 nm, were uniformly attached on the surface of BiOBr with an intimate contact interface as evidenced by characterization of the structure and composition of the composite. The QDs-Cu2S/BiOBr composite exhibited enhanced water splitting for hydrogen evolution, and 717 mu mol g(-1) of H-2 was produced with 3 wt% QDs-Cu2S/BiOBr containing 1 wt% Pt, which was 3.1 times higher than that of Cu2S nanoparticles. The enhancement of hydrogen evolution was attributed to the synergic effect between BiOBr and Cu2S QDs, where the hybridization could effectively accelerate the separation of the photogenerated charge carriers.
机译：通过简单的沉淀法制备了耦合三维（3D）花状分层BiOBr（QDs-Cu2S / BiOBr）的Cu2S量子点（QDs）。平均直径为10 nm的Cu2S量子点均匀地附着在BiOBr的表面上，并具有紧密的接触界面，这是由复合材料的结构和成分表征所证明的。 QDs-Cu2S / BiOBr复合材料表现出增强的水分解能力，可释放出氢气，并使用3 wt％的Pt含量为1 wt％的QDs-Cu2S / BiOBr生成717μmol g（-1）的H-2，该含量高3.1倍。比Cu2S纳米粒子氢释放的增强归因于BiOBr和Cu2S量子点之间的协同作用，其中杂交可以有效地加速光生载流子的分离。

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