English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

Red carbon mediated formation of Cu2O clusters dispersed on the oxocarbon framework by Fehling's route and their use for the nitrate electroreduction in acidic conditions

MPS-Authors
/persons/resource/persons271815

Odziomek,  Mateusz       
Mateusz Odziomek, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society;

/persons/resource/persons1057

Antonietti,  Markus       
Markus Antonietti, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society;

External Resource
No external resources are shared
Fulltext (restricted access)
There are currently no full texts shared for your IP range.
Fulltext (public)
There are no public fulltexts stored in PuRe
Supplementary Material (public)
There is no public supplementary material available
Citation

Ba, J., Dong, H., Odziomek, M., Lai, F., Wang, R., Han, Y., et al. (2024). Red carbon mediated formation of Cu2O clusters dispersed on the oxocarbon framework by Fehling's route and their use for the nitrate electroreduction in acidic conditions. Advanced Materials, 2400396. doi:10.1002/adma.202400396.


Cite as: https://hdl.handle.net/21.11116/0000-000F-1BB5-7
Abstract
The oligomers of carbon suboxide, known as red carbon, exhibit a highly conjugated structure and semiconducting properties. Upon mild heat treatment, it transforms into a carbonaceous framework rich in oxygen surface terminations, called oxocarbon. In this study, we harness the abundant oxygen functionalities as anchors to create oxocarbon-supported nanohybrid electrocatalysts. Starting with single atomic Cu (II) strongly coordinated to oxygen atoms on red carbon, the Fehling reaction leads to the formation of Cu2O clusters. Simultaneously, a covalent oxocarbon framework emerges via cross-linking, providing a robust support for Cu2O clusters. Notably, the oxocarbon support effectively stabilizes Cu2O clusters of very small size, ensuring their high durability in acidic conditions and the presence of ammonia. The synthesized material exhibits a superior electrocatalytic activity for nitrate reduction under acidic electrolyte conditions, with a high yield rate of NH4+ at 3.31 mmol h−1 mgcat−1 and a Faradaic efficiency of 92.5% achieved at a potential of -0.4 V (vs. RHE).