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Cooperative Brønsted Acid-Single Atom Photocatalysis in Metal-Organic Framework

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Authors

Jung, Yoon; Lee, Chan Woo; Lee, Byoung-Hoon; Yu, Yunjae; Moon, Jaeho; Lee, Hyeon Seok; Ko, Wonjae; Bok, Jinsol; Lee, Kangjae; Lee, Jaewoo; Bootharaju, Megalamane S.; Ryu, Jaeyune; Kim, Minho; Hyeon, Taeghwan

Issue Date
2024-12
Publisher
AMER CHEMICAL SOC
Citation
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, Vol.147 No.2, pp.1740-1748
Abstract
Enzymes, composed of earth-abundant elements, outperform conventional heterogeneous photocatalysts in hydrogen production due to the dual-site cooperation between adjacent active metal sites and proton-transferring ligands. However, the realization of such dual-site cooperation in heterogeneous catalytic systems is hindered by the challenges in the precise construction of cooperative active sites. In this study, we present the design of a structurally tuned metal-organic framework (MOF) photocatalyst that incorporates cooperative Br & oslash;nsted acid-single atom catalytic sites. By grafting Co single-atom sites onto the Ti-oxo clusters and introducing Br & oslash;nsted acidic P-OH moieties in tandem within the MOF-based catalyst structure, we achieved a visible-light-activated photocatalytic H2 production rate of 6.6 mmol g-1 h-1, which is 6.6 times higher than that of a Pt nanoparticle-based cocatalyst, emphasizing the significance of incorporating cooperative Br & oslash;nsted acid-single atom catalytic sites.
ISSN
0002-7863
URI
https://hdl.handle.net/10371/216828
DOI
https://doi.org/10.1021/jacs.4c13057
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  • College of Engineering
  • School of Chemical and Biological Engineering
Research Area Catalysis, Nano Materials, Physical E-Chem, 무기화학, 물리전기화학

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