Covalent triazine framework/carbon nanotube hybrids enabling selective reduction of CO2 to CO at low overpotential

Electrochemical reduction of CO2 provides a way to generate base chemicals from an abundant C1-source under mild conditions, whilst at the same time mitigating CO2 emissions. In this work, a novel class of tailorable, porous electrocatalysts for this process is proposed. Covalent triazine frameworks...

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Bibliographic Details
Published in:Green chemistry : an international journal and green chemistry resource : GC 2020-05, Vol.22 (10), p.3095-3103
Main Authors: Laemont, Andreas, Abednatanzi, Sara, Derakshandeh, Parviz Gohari, Verbruggen, Florian, Fiset, Erika, Qin, Qing, Kevin Van Daele, Meledina, Maria, Schmidt, Johannes, Oschatz, Martin, Van Der Voort, Pascal, Rabaey, Korneel, Antonietti, Markus, Breugelmans, Tom, Leus, Karen
Format: Article
Language:English
Subjects:
Carbon
Carbon dioxide
Carbon dioxide emissions
Carbon monoxide
Chemical reduction
Electrocatalysts
Electrochemistry
Electron transfer
Green chemistry
Hybrids
Hydroxyl groups
Multi wall carbon nanotubes
Nanotechnology
Nanotubes
NMR
Nuclear magnetic resonance
Selectivity
Triazine
X ray photoelectron spectroscopy
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Summary:Electrochemical reduction of CO2 provides a way to generate base chemicals from an abundant C1-source under mild conditions, whilst at the same time mitigating CO2 emissions. In this work, a novel class of tailorable, porous electrocatalysts for this process is proposed. Covalent triazine frameworks (CTFs) are grown in situ onto functionalized multiwalled carbon nanotubes. Hydroxyl groups decorating the surface of the multiwalled carbon nanotubes facilitate intimate contact between the carbon nanotubes and CTF, thus promoting efficient electron transfer. The novel hybrid materials generate CO with a faradaic efficiency up to 81% at an overpotential of 380 mV. The selectivity of the electrocatalysts could be linked to the amount of nitrogen present within the framework.
ISSN:1463-9262
1463-9270
DOI:10.1039/d0gc00090f