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.
Authors
- dr inż. Natalia Łukasik link open in new tab ,
- Daria Roda link open in new tab ,
- Maria Alaide de Oliveira,
- Bráulio Silva Barros,
- dr inż. Joanna Kulesza,
- dr hab. inż. Marcin Łapiński link open in new tab ,
- Hanna Świątek link open in new tab ,
- Anna Ilnicka,
- prof. dr hab. inż. Tomasz Klimczuk link open in new tab ,
- dr inż. Mariusz Szkoda link open in new tab
Additional information
- DOI
- Digital Object Identifier link open in new tab 10.1016/j.ijhydene.2024.10.262
- Category
- Publikacja w czasopiśmie
- Type
- artykuły w czasopismach
- Language
- angielski
- Publication year
- 2024
