Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 55, Issue 16, Pages 5019-5023Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201511009
Keywords
encapsulation; heterogeneous catalysis; metal clusters; metal-organic frameworks; platinum
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Funding
- National NSF of China [21322606, 21436005, 21406075, 21576095]
- FRFCU [2014ZB0004, 2015ZP002, 2015PT004]
- Guangdong NSF [2013B090500027]
- China Postdoctoral Science Foundation [2014M550437, 2015T80908]
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Surfactant-free tiny Pt clusters were successfully encapsulated within MOFs with controllable size and spatial distribution by a novel kinetically modulated one-step strategy. Our synthesis relies on the rational manipulation of the reduction rate of Pt ions and/or the growth rate of MOFs by using H-2 as assistant reducing agent and/or acetic acid as MOF-formation modulator. The as-prepared Pt@MOF core-shell composites exhibited exceedingly high activity and excellent selectivity in the oxidation of alcohols as a result of the ultrafine clean Pt clusters, as well as interesting molecular-sieving effects derived from the outer platinum-free MOF shell.
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