Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 58, Issue 30, Pages 10198-10203Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201904058
Keywords
hydrogen evolution; metal-organic frameworks; photocatalysis; single-atom catalysts; two-dimensional materials
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Funding
- National Natural Science Foundation of China [21890733, 51773115, 51573091, 21774076]
- Program for Basic Research of Shanghai Science and Technology Commission [17JC1403200, 17JC1403400]
- Program of Shanghai Academic Research Leader [19XD1421700]
- Program of Shanghai Eastern Scholar
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A surfactant-stabilized coordination strategy is used to make two-dimensional (2D) single-atom catalysts (SACs) with an ultrahigh Pt loading of 12.0 wt %, by assembly of pre-formed single Pt atom coordinated porphyrin precursors into free-standing metal-organic framework (MOF) nanosheets with an ultrathin thickness of 2.4 +/- 0.9 nm. This is the first example of 2D MOF-based SACs. Remarkably, the 2D SACs exhibit a record-high photocatalytic H-2 evolution rate of 11 320 mu mol g(-1) h(-1) via water splitting under visible light irradiation (lambda>420 nm) compared with those of reported MOF-based photocatalysts. Moreover, the MOF nanosheets can be readily drop-casted onto solid substrates, forming thin films while still retaining their photocatalytic activity, which is highly desirable for practical solar H-2 production.
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