Green synthesis of lignin-directed palladium nanoparticles/UiO-66-NH2 paper-based composite catalyst for synergistic adsorption-catalysis removal of hexavalent chromium.
Int J Biol Macromol
; 255: 128187, 2024 Jan.
Article
in En
| MEDLINE
| ID: mdl-37977467
ABSTRACT
A combination of multiple methods can greatly intensify the removal efficiency of hazardous substances. Herein, the synergistic utilization of adsorption and catalysis achieved for the highly efficient removal of hexavalent chromium (Cr6+). A paper-based palladium nanoparticles/UiO-66-NH2 (PdNPs/UiO-66-NH2/LP) composite catalyst was prepared using lignocellulose paper-based material (LP) for the loading of UiO-66-NH2 MOFs materials, with the lignin in LP as the reducer for the in-situ synthesis of PdNPs (12.3 nm) on UiO-66-NH2 MOF materials. Lignocellulose paper-based materials with high strength (82 N·m/g) realized low-cost and environmentally friendly preparation and guaranteed the practicability of PdNPs/UiO-66-NH2/LP composite catalyst. The prepared PdNPs/UiO-66-NH2/LP achieved high-efficiency catalytic activity for hazardous Cr6+ removal through a constructed adsorption-catalytic synergistic system, in which the removal efficiency of Cr6+ in 10 min was increased by 2 times compared with a composite catalyst without MOFs loading. Finally, the PdNPs/UiO-66-NH2/LP composite catalyst demonstrated the great efficiency and practicality of water pollution treatment through synergistic adsorption enrichment and catalytic reduction.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Organometallic Compounds
/
Metal Nanoparticles
Language:
En
Journal:
Int J Biol Macromol
Year:
2024
Document type:
Article