Thermodynamic and Kinetic Modulation of Artificial H  2  O  2  Photosynthesis via Spatial Control of Redox Catalytic Sites

Zhang, Xu; Zhou, Qixin; Li, Chen; Su, Hui; Chen, Taoran; CUI, Peixin; Ban, Chaogang; Tao, Ying; Wang, Jiaxing; Jiang, Yuheng; Liu, Lingyue; Teng, Zhenyuan; Fan, Zhanxi; Zhao, Yulin; Zheng, Kun; Ding, Jie; Su, Chenliang; Zhang, Tierui; Liu, Bin

doi:10.1021/jacs.5c22625

articleJournal of the American Chemical SocietyMar 6, 2026Closed access

Thermodynamic and Kinetic Modulation of Artificial H 2 O 2 Photosynthesis via Spatial Control of Redox Catalytic Sites

XZXu Zhang QZQixin Zhou CLChen Li HSHui Su TCTaoran Chen

City University of Hong Kong · Beijing University of Technology · +10 more institutions

PubMed

Indexed incrossrefpubmed

Abstract

The thermodynamic and kinetic mismatch between oxidative and reductive half-reactions represents a central barrier in photocatalysis, largely due to the absence of well-defined and functionally differentiated active sites. Herein, we construct Co and Pt redox dual-site catalysts (CoPt RDSCs), featuring nonbonded yet spatially close single atoms anchored on carbon nitride for H2O2 photosynthesis, thereby enabling site-specific utilization of photogenerated holes and electrons. The Co sites act as the hole centers that drive the four-electron water oxidation reaction, whereas the Pt sites serve as the electron centers that catalyze the two-electron oxygen reduction reaction, each lowering the thermodynamic…

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Topics & keywords

Topics

Keywords

Redox
Catalysis
Artificial photosynthesis
Kinetic energy
Oxidative phosphorylation
Active site
Electron transport chain
Oxygen

UN Sustainable Development Goals

Clean water and sanitation

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