Pt nanocluster-Fe single atom pairs dual-regulate charge extraction and interfacial reaction for enhanced photoelectric response

Yuanxing Chen, Ying Qin, Mingwang Liu, Wenhong Yang, Yiwei Qiu, Wen Li, Lirong Zheng, Wenling Gu (), Chengzhou Zhu () and Liuyong Hu ()
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Yuanxing Chen: Wuhan Institute of Technology
Ying Qin: Central China Normal University
Mingwang Liu: Central China Normal University
Wenhong Yang: Central China Normal University
Yiwei Qiu: Central China Normal University
Wen Li: Wuhan Institute of Technology
Lirong Zheng: Chinese Academy of Sciences
Wenling Gu: Central China Normal University
Chengzhou Zhu: Central China Normal University
Liuyong Hu: Wuhan Institute of Technology

Nature Communications, 2025, vol. 16, issue 1, 1-11

Abstract: Abstract Energy level mismatches between semiconductors and cocatalysts often induce carrier recombination, limiting photocatalytic and photoelectrochemical (PEC) efficiency. Here, we integrate Pt nanocluster-Fe single-atom pairs with CuO to regulate both solid-solid and solid-liquid interfaces in PEC systems. Experimental and theoretical analyses reveal that an Ohmic contact at the CuO/Pt interface accelerates electron extraction, while Pt-to-Fe charge transfer enhances oxygen reduction at Fe sites, collectively boosting reaction kinetics. Leveraging this, we construct a PEC biosensor exploiting chelating effect of glyphosate on CuO to impede electron transfer, achieving a detection limit of 0.41 ng/mL. This interface engineering strategy advances cocatalyst design for enhanced energy conversion and sensing applications by simultaneously addressing carrier dynamics and interfacial reaction barriers.

Date: 2025
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DOI: 10.1038/s41467-025-58174-x

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