An S-scheme heterojunction BiOBr QDs/Bi7O9I3 nanoflowers enabling enhanced photocatalytic oxygen evolution

IF 3.4 3区化学 Q2 CHEMISTRY, PHYSICAL Catalysis Communications Pub Date : 2024-01-11 DOI:10.1016/j.catcom.2024.106843

Qian Li , Xin Pan , Xingguo Wang , Chengbing Ma , Jitang Chen , Yan Han , Biao Wang , Lianzhen Bo , Huiquan Li , Xinying Liu , Yupeng Yuan

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Abstract

Constructing a heterojunction is an effective strategy to achieve high-efficiency separation of charges, which enhances the photocatalytic performance. Here, we present a 0D/3D S-scheme heterojunction, BiOBr/Bi₇O₉I₃, which was constructed by incorporating highly dispersed BiOBr quantum dots (QDs) onto the surface of Bi₇O₉I₃ nanoflowers. This heterostructure effectively absorbs visible light and enhances the separation of charge carriers significantly via an S-scheme pathway. As a result, the BiOBr/Bi₇O₉I₃ photocatalysts demonstrated an excellent photocatalytic O₂ evolution rate, achieving a rate of nearly 1500 μmol h⁻¹ g⁻¹. This work highlights the effectiveness of constructing S-scheme heterojunctions to enhance photocatalytic O₂ evolution.

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可增强光催化氧进化的 S 型异质结 BiOBr QDs/Bi7O9I3 纳米花束

构建异质结是实现高效电荷分离、提高光催化性能的有效策略。在这里，我们介绍了一种 0D/3D S 型异质结 BiOBr/Bi7O9I3，它是通过在 Bi7O9I3 纳米花表面加入高度分散的 BiOBr 量子点（QDs）而构建的。这种异质结构能有效吸收可见光，并通过 S 型途径显著增强电荷载流子的分离。因此，BiOBr/Bi7O9I3 光催化剂表现出卓越的光催化 O2 演化率，达到近 1500 μmol h-1 g-1。这项工作凸显了构建 S 型异质结以提高光催化 O2 演化的有效性。

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来源期刊

Catalysis Communications 化学-物理化学

CiteScore

6.20

自引率

2.70%

发文量

183

审稿时长

46 days

期刊介绍： Catalysis Communications aims to provide rapid publication of significant, novel, and timely research results homogeneous, heterogeneous, and enzymatic catalysis.