Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 55, Issue 6, Pages 2167-2170Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201508939
Keywords
Heck reaction; nanostructures; transition-metal hydroxides; two-dimensional materials; nanosheets
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Funding
- Ministry of Science and Technology of China [2014CB239402, 2013CB834505]
- National Natural Science Foundation of China [51322213, 51172245, 91127005, 21401206, 21401207]
- Beijing Natural Science Foundation [2152033, 2154058]
- U.S. Department of Energy [DE-SC0002247]
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We report an effective and universal approach for the preparation of ultrathin single- or multiple-component transition-metal hydroxide (TMH) nanosheets with thickness below 5nm. The unique synthesis benefits from the gradual decomposition of the preformed metal-boron (M-B, M=Fe, Co, Ni, NiCo) composite nanospheres which facilitates the formation of ultrathin nanosheets by the oxidation of the metal and the simultaneous release of boron species. The high specific surface area of the sheets associated with their ultrathin nature promises a wide range of applications. For example, we demonstrate the remarkable adsorption ability of Pb-II and As-V in waste water by the ultrathin FeOOH nanosheets. More interestingly, the process can be extended simply to the synthesis of composite structures of metal alloy hollow shells encapsulated by TMH nanosheets, which show excellent catalytic activity in the Heck reaction.
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