Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 60, Issue 52, Pages 27258-27263Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202111594
Keywords
energy transfer; metal-organic frameworks; nanosheets; photocatalysis; spatial design
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Funding
- Robert A. Welch Foundation through a Welch Endowed Chair [A0030]
- National Natural Science Foundation of China [21922407]
- Natural Science Foundation of Jiangsu Province of China [BK20190086]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
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Efficient photocatalysis in metal-organic frameworks (MOF) and MOF nanosheets (NSs) is limited by short-lived charge separation and self-quenching. Energy-transfer process (EnT) is proposed to enhance charge separation and the catalytic performance of a series of MOF NSs. By utilizing NS, the photocatalyst can be well isolated to reduce self-quenching, leading to enhanced catalytic performances.
High-efficiency photocatalysis in metal-organic frameworks (MOF) and MOF nanosheets (NSs) are often limited by their short-lived charge separation as well as self-quenching. Here, we propose to use the energy-transfer process (EnT) to increase charge separation, thus enhancing the catalytic performance of a series of MOF NSs. With the use of NS, the photocatalyst can also be well isolated to reduce self-quenching. Tetrakis(4-carboxyphenyl) porphyrin (H4TCPP) and 1,3,6,8-tetrakis(p-benzoic acid)pyrene (H(4)TBAPy) linkers were chosen as the acceptor and donor moieties, respectively. Accounting for the precise spatial design afforded by the MOF NSs, the donor and acceptor moieties could be closely positioned on the NSs, allowing for an efficient EnT process as well as a high degree of site isolation. Two templates, donor-on-acceptor NS and acceptor-on-donor NS catalysts, were successfully synthesized, and the results show that the second one has much enhanced catalytic performances over the first one due to site-isolated active photocatalysts.
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