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