Metal–Organic Framework Hexagonal Nanoplates: Bottom-up Synthesis, Topotactic Transformation, and Efficient Oxygen Evolution Reaction
- 4 April 2020
- journal article
- research article
- Published by American Chemical Society (ACS) in Journal of the American Chemical Society
- Vol. 142 (16), 7317-7321
- https://doi.org/10.1021/jacs.0c01916
Abstract
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 mor-phology. Herein, a topology guided bottom-up synthesis of a novel hexagonal 2D MOF nanoplates is realized. The hexagonal channels constructed via the distorted (3,4)-connected Ni2(BDC)2(DABCO) (BDC = 1,4-benzenedicar-boxylic acid, DABCO = 1,4-diazabicyclo[2.2.2]octane) framework serve as the template for the specifically designed morphology. Under the inhibition and modu-lation of pyridine through a substitution-suppression process, the morphology can be modified from hexagonal nanorods to nano-disks, and to nanoplates with controllable thickness tuned by the dosage of pyridine. Subsequent pyrolysis treatment converts the nanoplates into N-doped [email protected] electrocatalyst, which exhibits a small overpotential as low as 307 mV at current density of 10 mA cm‒2 in oxygen evolution reaction (OER).Funding Information
- Central South University
- Natural Science Foundation of Hunan Province (2019JJ10006)
- Japan Society for the Promotion of Science (18H03869)
- National Natural Science Foundation of China (51872333, 51874357)
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