Metal–Organic
Framework Hexagonal Nanoplates:
Bottom-up Synthesis, Topotactic Transformation, and Efficient Oxygen
Evolution Reaction
Posted on 2020-04-09 - 14:43
Rational
design and bottom-up synthesis based on the structural
topology is a promising way to obtain two-dimensional metal–organic
frameworks (2D MOFs) in well-defined geometric morphology. Herein,
a topology-guided bottom-up synthesis of a novel hexagonal 2D MOF
nanoplate is realized. The hexagonal channels constructed via the
distorted (3,4)-connected Ni2(BDC)2(DABCO) (BDC
= 1,4-benzenedicarboxylic acid, DABCO = 1,4-diazabicyclo[2.2.2]octane)
framework serve as the template for the specifically designed morphology.
Under the inhibition and modulation of pyridine through a substitution–suppression
process, the morphology can be modified from hexagonal nanorods to
nanodisks and to nanoplates with controllable thickness tuned by the
dosage of pyridine. Subsequent pyrolysis treatment converts the nanoplates
into a N-doped Ni@carbon electrocatalyst, which exhibits a small overpotential
as low as 307 mV at a current density of 10 mA cm–2 in the oxygen evolution reaction.
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Lin, Yifan; Wan, Hao; Wu, Dan; Chen, Gen; Zhang, Ning; Liu, Xiaohe; et al. (2020). Metal–Organic
Framework Hexagonal Nanoplates:
Bottom-up Synthesis, Topotactic Transformation, and Efficient Oxygen
Evolution Reaction. ACS Publications. Collection. https://doi.org/10.1021/jacs.0c01916
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AUTHORS (10)
YL
Yifan Lin
HW
Hao Wan
DW
Dan Wu
GC
Gen Chen
NZ
Ning Zhang
XL
Xiaohe Liu
JL
Junhui Li
YC
Yijun Cao
GQ
Guanzhou Qiu
RM
Renzhi Ma