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Controllable Synthesis of Ultrathin Transition‐Metal Hydroxide Nanosheets and their Extended Composite Nanostructures for Enhanced Catalytic Activity in the Heck Reaction
Author(s) -
Fan Hua,
Huang Xing,
Shang Lu,
Cao Yitao,
Zhao Yufei,
Wu LiZhu,
Tung ChenHo,
Yin Yadong,
Zhang Tierui
Publication year - 2016
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201508939
Subject(s) - materials science , hydroxide , catalysis , transition metal , composite number , chemical engineering , metal , nanotechnology , adsorption , boron , nanostructure , alloy , composite material , chemistry , organic chemistry , metallurgy , engineering
We report an effective and universal approach for the preparation of ultrathin single‐ or multiple‐component transition‐metal hydroxide (TMH) nanosheets with thickness below 5 nm. 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.