CO₂-selective photoreduction to value-added products is ideal, but its practical application suffers from weak photogenerated carrier separation and insufficient multielectron transport. Herein, we constructed the tricomponent AuNPs@SnO₂–AuNCs hybrid by decorating Au nanoclusters (AuNCs) on the Au nanoparticle (AuNPs)@SnO₂ core–shell structure. AuNC–NP dual coupling endowed AuNPs@SnO₂–AuNCs with an excellent CO yield of 64.8 μmol g^–1 h^–1 during CO₂ photoreduction, which was higher than the role of separate application of AuNCs (25.3 μmol g^–1 h^–1) and AuNPs (16.0 μmol g^–1 h^–1). It was mainly attributed that the coaction of AuNPs and AuNCs not only enhanced the visible light absorption capacity but also improved the photogenerated carrier separation/migration. As a result, the electron-rich AuNCs induced from plasmonic AuNPs and photoexcited SnO₂ promoted the photocatalytic CO₂-to-CO performance. This work provides a new perspective to design multicomponent photocatalysts for highly efficient CO₂ conversion.

中文翻译：

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用于光催化 CO2 转化的 Au 簇-纳米粒子双偶联


CO₂ 选择性光还原成增值产品是理想的，但其实际应用受到光生载流子分离弱和多电子传输不足的影响。在此，我们通过在 Au 纳米颗粒 （AuNPs） @SnO₂ 核壳结构上装饰 Au 纳米簇 （AuNCs） 构建了 2-AuNCs 杂化AuNPs@SnO三组分。AuNC-NP 双重偶联赋予AuNPs@SnO 2-AuNCs 在 CO₂ 光还原过程中具有 64.8 μmol ^{g-1 h-1} 的优异 CO 产率，这高于单独施用 AuNCs （25.3 μmol ^{g-1 h-1}） 和 AuNPs （16.0 μmol ^{g-1 h-1}）。主要归因于 AuNPs 和 AuNCs 的协同作用不仅增强了可见光吸收能力，而且提高了光生载流子分离/迁移。结果，等离子体 AuNPs 和光激发 SnO₂ 诱导的富电子 AuNCs 促进了光催化 CO 2-to-CO 性能。这项工作为设计用于高效 CO₂ 转化的多组分光催化剂提供了新的视角。