Abstract
Porous metal-organic frameworks(MOFs)have been recently discovered to be efficient catalysts for energy applications and green technologies.Here,we report on a scalable catalytic platform using Cu-based MOFs for electrocatalytic alkaline hydrogen evolution reaction.First,the solvothermal synthesis of Cu-BTC MOFs(BTC=1,3,5-benzenetricarboxylate)at 85 ℃ and a 1∶60 ligand-to-solvent ratio allowed for minimizing the chemical consumption.Second,the obtained platform demonstrated enhanced electrochemical performance compared with commercially available Cu-based MOFs,with a poten-tial of-230 versus-232 eV,logarithm of the current density of-3.6 versus-4.2 cm2,and electrochemical surface area of 75 versus 25 cm2 per cm2 of geometric area,respectively.Morphological and Raman analyses also revealed that the high concentration of defects in the obtained submicron Cu-BTC MOFs can contribute to their improved catalytic performance.Thus,our findings pave the way to the low-cost synthesis of energy-efficient MOF-based catalysts for hydrogen production.
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