Photothermal-enabled single-atom catalysts for high-efficiency hydrogen peroxide photosynthesis from natural seawater

Wei Wang, Qun Song, Qiang Luo (), Linqian Li, Xiaobing Huo, Shipeng Chen, Jinyang Li, Yunhong Li, Se Shi, Yihui Yuan, Xiwen Du, Kai Zhang and Ning Wang ()
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Wei Wang: Hainan University
Qun Song: University of Göttingen
Qiang Luo: Hainan University
Linqian Li: Hainan University
Xiaobing Huo: Hainan University
Shipeng Chen: Hainan University
Jinyang Li: Hainan University
Yunhong Li: Hainan University
Se Shi: Hainan University
Yihui Yuan: Hainan University
Xiwen Du: Tianjin University
Kai Zhang: University of Göttingen
Ning Wang: Hainan University

Nature Communications, 2023, vol. 14, issue 1, 1-10

Abstract: Abstract Hydrogen peroxide (H2O2) is a powerful industrial oxidant and potential carbon-neutral liquid energy carrier. Sunlight-driven synthesis of H2O2 from the most earth-abundant O2 and seawater is highly desirable. However, the solar-to-chemical efficiency of H2O2 synthesis in particulate photocatalysis systems is low. Here, we present a cooperative sunlight-driven photothermal-photocatalytic system based on cobalt single-atom supported on sulfur doped graphitic carbon nitride/reduced graphene oxide heterostructure (Co–CN@G) to boost H2O2 photosynthesis from natural seawater. By virtue of the photothermal effect and synergy between Co single atoms and the heterostructure, Co–CN@G enables a solar-to-chemical efficiency of more than 0.7% under simulated sunlight irradiation. Theoretical calculations verify that the single atoms combined with heterostructure significantly promote the charge separation, facilitate O2 absorption and reduce the energy barriers for O2 reduction and water oxidation, eventually boosting H2O2 photoproduction. The single-atom photothermal-photocatalytic materials may provide possibility of large-scale H2O2 production from inexhaustible seawater in a sustainable way.

Date: 2023
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Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-38211-3

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DOI: 10.1038/s41467-023-38211-3

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