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Biomass-derived oxygen-doped hollow carbon microtubes for electrocatalytic N 2 -to-NH 3 fixation under ambient conditions.
- Source :
-
Chemical communications (Cambridge, England) [Chem Commun (Camb)] 2019 Feb 26; Vol. 55 (18), pp. 2684-2687. - Publication Year :
- 2019
-
Abstract
- Electrocatalytic N2 reduction as an alternative approach to the energy-intensive and large CO2-producing Haber-Bosch process for NH3 synthesis under mild conditions has attracted extensive attention. Current research efforts on N2 reduction have mainly focused on metal-based catalysts, but metal-free alternatives can avoid the issue of metal ion release. In this work, oxygen-doped hollow carbon microtubes (O-KFCNTs) derived from natural kapok fibers are reported as a metal-free NRR electrocatalyst for N2-to-NH3 conversion with excellent selectivity. In 0.1 M HCl, the O-KFCNTs achieve a high faradaic efficiency of 9.1% at -0.80 V vs. a reversible hydrogen electrode (RHE) and a NH3 yield rate of 25.12 μg h-1 mgcat.-1 at -0.85 V vs. RHE under ambient conditions. Notably, this catalyst also demonstrates high stability.
Details
- Language :
- English
- ISSN :
- 1364-548X
- Volume :
- 55
- Issue :
- 18
- Database :
- MEDLINE
- Journal :
- Chemical communications (Cambridge, England)
- Publication Type :
- Academic Journal
- Accession number :
- 30747174
- Full Text :
- https://doi.org/10.1039/c8cc09867k