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A Surfactant‐Free and Scalable General Strategy for Synthesizing Ultrathin Two‐Dimensional Metal–Organic Framework Nanosheets for the Oxygen Evolution Reaction
Author(s) -
Zhuang Linzhou,
Ge Lei,
Liu Hongli,
Jiang Zongrui,
Jia Yi,
Li Zhiheng,
Yang Dongjiang,
Hocking Rosalie K.,
Li Mengran,
Zhang Longzhou,
Wang Xin,
Yao Xiangdong,
Zhu Zhonghua
Publication year - 2019
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.201907600
Subject(s) - materials science , catalysis , metal , oxide , nanotechnology , metal organic framework , cobalt , reactivity (psychology) , chemical engineering , oxygen evolution , chemistry , organic chemistry , adsorption , metallurgy , electrochemistry , medicine , alternative medicine , electrode , pathology , engineering
Abstract Metal–organic framework (MOFs) two‐dimensional (2D) nanosheets have many coordinatively unsaturated metal sites that act as active centres for catalysis. To date, limited numbers of 2D MOFs nanosheets can be obtained through top‐down or bottom‐up synthesis strategies. Herein, we report a 2D oxide sacrifice approach (2dOSA) to facilely synthesize ultrathin MOF‐74 and BTC MOF nanosheets with a flexible combination of metal sites, which cannot be obtained through the delamination of their bulk counterparts (top‐down) or the conventional solvothermal method (bottom‐up). The ultrathin iron–cobalt MOF‐74 nanosheets prepared are only 2.6 nm thick. The sample enriched with surface coordinatively unsaturated metal sites, exhibits a significantly higher oxygen evolution reaction reactivity than bulk FeCo MOF‐74 particles and the state‐of‐the‐art MOF catalyst. It is believed that this 2dOSA could provide a new and simple way to synthesize various ultrathin MOF nanosheets for wide applications.