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Electrochemical Exfoliation of Pillared‐Layer Metal–Organic Framework to Boost the Oxygen Evolution Reaction
Author(s) -
Huang Jin,
Li Yun,
Huang RuiKang,
He ChunTing,
Gong Li,
Hu Qiong,
Wang Lishi,
Xu YanTong,
Tian XiaoYun,
Liu SiYang,
Ye ZiMing,
Wang Fuxin,
Zhou DongDong,
Zhang WeiXiong,
Zhang JiePeng
Publication year - 2018
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.201801029
Subject(s) - overpotential , electrocatalyst , catalysis , electrochemistry , oxygen evolution , exfoliation joint , redox , materials science , inorganic chemistry , covalent bond , chemical engineering , metal organic framework , metal , chemistry , nanotechnology , electrode , organic chemistry , graphene , metallurgy , adsorption , engineering
Two‐dimensional (2D) materials and ultrathin nanosheets are advantageous for elevating the catalysis performance and elucidating the catalysis mechanism of heterogeneous catalysts, but they are mostly restricted to inorganic or organic materials based on covalent bonds. We report an electrochemical/chemical exfoliation strategy for synthesizing metal–organic 2D materials based on coordination bonds. A catechol functionalized ligand is used as the redox active pillar to construct a pillared‐layer framework. When the 3D pillared‐layer MOF serves as an electrocatalyst for water oxidation (pH 13), the pillar ligands can be oxidized in situ and removed. The remaining ultrathin (2 nm) nanosheets of the metal–organic layers are an efficient catalyst with overpotentials as low as 211 mV at 10 mA cm −2 and a turnover frequency as high as 30 s −1 at an overpotential of 300 mV.