Cobalt-Enhanced Mass Transfer and Catalytic Production of Sulfate Radicals in MOF-Derived CeO2 ⢠Co3 O4 Nanoflowers for Efficient Degradation of Antibiotics.
Small
; 17(43): e2101393, 2021 10.
Article
en En
| MEDLINE
| ID: mdl-34160908
ABSTRACT
Antibiotics discharge has been a critical issue as the abuse in clinical disease treatment and aquaculture industry. Advanced oxidation process (AOPs) is regarded as a promising approach to degrade organic pollutants from wastewater, however, the catalysts for AOPs always present low activities, and uncontrollable porosities, thus hindering their further wider applications. In this work, an aliovalent-substitution strategy is employed in metal-organic framework (MOF) precursors assembly, aiming to introduce Co(II/III) into Ce-O clusters which could modify the structure of the clusters, then change the crystallization, enlarge the surface area, and regulate the morphology. The introduction of Co(II/III) also enlarges the pore size for mass transfer and enriches the active sites for the production of sulfate radicals (SO4⢠- ) in MOF-derived catalysts, leading to excellent performance in antibiotics removal. Significantly, the CeO2 â¢Co3 O4 nanoflowers could efficiently enhance the generation of sulfate radical SO4⢠- and promote the norfloxacin removal efficiency to 99% within 20 min. The CeO2 â¢Co3 O4 nanoflowers also present remarkable universality toward various antibiotics and organic pollutants. The aliovalent-substitution strategy is anticipated to find wide use in the exploration of high-performance MOF-derived catalysts for various applications.
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Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Estructuras Metalorgánicas
Idioma:
En
Revista:
Small
Asunto de la revista:
ENGENHARIA BIOMEDICA
Año:
2021
Tipo del documento:
Article
País de afiliación:
China