In composite photosynthetic systems, one most primary promise is to pursue the effect coupling among light harvesting, charge transfer, and catalytic kinetics. Herein, this study designs the reduced carbon dots (r‐CDs) as both photon harvesters and photoelectron donors in combination with the platinum (Pt) clusters and fabricated the function‐integrated r‐CD/Pt photocatalyst through a photochemical route to control the anchoring of Pt clusters on r‐CDs' surface for solar‐driven hydrogen (H₂) generation. In the obtained r‐CD/Pt composite, the r‐CDs absorb solar photons and transform them into energetic electrons, which transfer to the Pt clusters with favorable charge separation for H₂ evolution reaction (HER). As a result, the efficient coupling of respective natures from r‐CDs in photon harvesting and Pt in proton reduction is achieved through well‐steered photoelectron transfer in the r‐CD/Pt system to cultivate a remarkable and stable photocatalytic H₂ evolution activity with an average rate of 681 µmol g⁻¹ h⁻¹. This work integrates two functional components into an effective HER photocatalyst and gains deep insights into the regulation of the function coupling in composite photosynthetic systems.

中文翻译：

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将碳点中激发的光电子引导至铂簇催化剂中用于太阳能制氢

在复合光合作用系统中，最重要的希望是追求光捕获、电荷转移和催化动力学之间的效应耦合。在此，本研究将还原碳点（r-CD）与铂（Pt）簇结合设计为光子收集器和光电子供体，并通过光化学途径制备功能集成的r-CD/Pt光催化剂来控制锚定r-CD 表面上的 Pt 簇用于太阳能驱动的氢气 (H ₂ ) 产生。在所获得的r-CD/Pt复合材料中，r-CD吸收太阳光子并将其转化为高能电子，这些电子转移到Pt团簇上，并有利于H ₂析出反应（HER）的电荷分离。因此，通过r-CD/Pt系统中良好引导的光电子转移，实现了光子捕获中的r-CD和质子还原中的Pt各自性质的有效耦合，从而培养了显着且稳定的光催化H 2 析氢_活性。平均速率为681 µmol g ^-1 h ^-1。这项工作将两个功能组件集成到有效的 HER 光催化剂中，并深入了解复合光合系统中功能耦合的调节。