Regeneration of porous Fe3O4 nanosheets from deep eutectic solvent for high-performance electrocatalytic nitrogen reduction.
J Colloid Interface Sci
; 602: 64-72, 2021 Nov 15.
Article
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| MEDLINE
| ID: mdl-34118606
ABSTRACT
The production of ammonia through electrocatalytic nitrogen reduction reaction (NRR) is environmentally friendly and energy-saving, but it still suffers from the low NH3 yield rate and poor selectivity. Herein, enlightened by the unique solubility of Fe3O4 in deep eutectic solvent (DES), we, for the first time, reported a DES-based regeneration strategy to fabricate porous Fe3O4 nanosheets utilizing commercial Fe3O4 powder as raw materials. The as-regenerated porous Fe3O4 nanosheets exhibited satisfactory electrocatalytic performance toward NRR, affording a NH3 yield rate of 12.09⯵gâ¯h-1 mg-1cat along with an outstanding Faradaic efficiency (FE) of 34.38% at -0.1â¯V versus reversible hydrogen electrode (RHE), in the 0.1â¯M Na2SO4 electrolyte. The superior electrocatalytic activity of the as-regenerated Fe3O4 nanosheets mainly resulted from their unique sheet-like morphology with large active surface area, high porosity, and abundant oxygen vacancies. Our proposed DES-based regeneration strategy opens a new avenue for the construction of high-performance electrocatalyst from commercial raw materials, holding great promise in NRR.
Palabras clave
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Amoníaco
/
Nitrógeno
Idioma:
En
Revista:
J Colloid Interface Sci
Año:
2021
Tipo del documento:
Article
País de afiliación:
China