Sustainable photocatalytic hydrogen peroxide production over octonary high-entropy oxide

The direct utilization of solar energy for the artificial photosynthesis of hydrogen peroxide (H 2 O 2 ) provides a reliable approach for producing this high-value green oxidant. Here we report on the utility of high-entropy oxide (HEO) semiconductor as an all-in-one photocatalyst for visible light-...

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Published in:Nature communications 2024-11, Vol.15 (1), p.9505-15, Article 9505
Main Authors: Ling, Hao, Sun, Huacong, Lu, Lisha, Zhang, Jingkun, Liao, Lei, Wang, Jianlin, Zhang, Xiaowei, Lan, Yingying, Li, Renjie, Lu, Wengang, Cai, Lejuan, Bai, Xuedong, Wang, Wenlong
Format: Article
Language:English
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Broadband
Chromium
Entropy
Humanities and Social Sciences
Hydrogen peroxide
Irradiation
multidisciplinary
Oxidants
Oxidizing agents
Photocatalysis
Photocatalysts
Photosynthesis
Science
Science (multidisciplinary)
Solar energy
Water resources
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Summary:The direct utilization of solar energy for the artificial photosynthesis of hydrogen peroxide (H 2 O 2 ) provides a reliable approach for producing this high-value green oxidant. Here we report on the utility of high-entropy oxide (HEO) semiconductor as an all-in-one photocatalyst for visible light-driven H 2 O 2 production directly from H 2 O and atmospheric O 2 without the need of any additional cocatalysts or sacrificial agents. This high-entropy photocatalyst contains eight earth-abundant metal elements (Ti/V/Cr/Nb/Mo/W/Al/Cu) homogeneously arranged within a single rutile phase, and the intrinsic chemical complexity along with the presence of a high density of oxygen vacancies endow high-entropy photocatalyst with distinct broadband light harvesting capability. An efficient H 2 O 2 production rate with an apparent quantum yield of 38.8% at 550 nm can be achieved. The high-entropy photocatalyst can be readily assembled into floating artificial leaves for sustained on-site production of H 2 O 2 from open water resources under natural sunlight irradiation. An “all-in-one” high-entropy semiconductor photocatalyst enables the photocatalytic production of H 2 O 2 from H 2 O and O 2 under visible light without any external cocatalysts or sacrificial agents
ISSN:2041-1723
2041-1723
DOI:10.1038/s41467-024-53896-w