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Hydrogen evolution reaction catalyzed by Co-based metal-organic frameworks and their derivatives

Abstract

In this study, Co-bearing Metal-Organic Frameworks (MOFs) are grown via a facile solvothermal process on the surface of two kinds of conductive substrates – titanium dioxide nanotubes (TiO2NT) and fluorine-doped tin oxide (FTO) glass and tested as electrodes in the electrochemical hydrogen evolution reaction (HER). The materials derived from three organic linkers - terephthalic acid (Co-BDC), 2-aminoterephthalic acid (Co-BDCNH2), and trimesic acid (Co-BTC) are characterized by FTIR, Raman, XRD, SEM-EDS, BET, and XPS. Among the layers on FTO without post-synthesis treatment, Co-BTC shows the highest activity (overpotential of HER 1.72 V vs. Ag/AgCl/KCl). The effects of substrate change on TiO2NT and annealing of Co-BTC layers in air and argon on their electrocatalytic properties are also studied. Using TiO2 nanotubes as a substrate and annealing the material in air results in a reduction of the hydrogen evolution overpotential to 1.44 V vs. Ag/AgCl/KCl and a significant reduction in the exchange current density.

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Category:
Articles
Type:
artykuły w czasopismach
Published in:
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY no. 92, pages 90 - 101,
ISSN: 0360-3199
Language:
English
Publication year:
2024
Bibliographic description:
Łukasik N., Roda D., de Oliveira M. A., Silva Barros B., Kulesza J., Łapiński M., Świątek H., Ilnicka A., Klimczuk T., Szkoda M.: Hydrogen evolution reaction catalyzed by Co-based metal-organic frameworks and their derivatives// INTERNATIONAL JOURNAL OF HYDROGEN ENERGY -,iss. 92 (2024), s.90-101
DOI:
Digital Object Identifier (open in new tab) 10.1016/j.ijhydene.2024.10.262
Sources of funding:
  • Free publication
Verified by:
Gdańsk University of Technology

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