Surface‐Engineered 2D Bimetallic FeNi‐MOFs Derived from Layered Double Hydroxides for Photocatalytic Membranes with Enhanced Dye Fixation in Wastewater Treatment DOI Open Access

G. Karthikeyan,

M. Sakar,

Muthu Austeria P

et al.

Small, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 29, 2024

FeNi-based layered double hydroxides (LDHs) are used as precursors to derive bimetallic FeNi-metal organic frameworks (D-FeNi MOFs) with terephthalic acid ligands, offering enhanced properties compared conventionally prepared FeNi-MOFs (C-FeNi MOFs). D-FeNi MOFs exhibited superior structural, surface, and electrochemical features, confirmed by density functional theory (DFT) studies, which also predicted their catalytic mechanism. Band edge potential calculations through Mott-Schottky analysis revealed favorable redox potential, charge transfer, reduced recombination resistance, explaining photocatalytic efficiency. degraded 91% of rhodamine B (RhB) 89% Congo red (CR), outperforming C-FeNi MOFs, 84% 77%, respectively. These incorporated (3, 5, 7 wt%) into polysulfone (PSU) membranes develop membranes. The wt% (FNM7) high water flux (54.4 L m-2h-1) dye (≈51.1 41.6 rejection rates ≈88% 90% for RhB CR, significantly surpassing bare FNM7 demonstrated anti-fouling regeneration (12.9% RhB, 9.6% CR degradation under sunlight) across three cycles. DFT studies showed FeNi centers weaken molecule bonds, aiding degradation, while carboxyl groups in formed robust hydrogen bonds PSU, ensuring no particle leaching. This highlights MOF-membranes an efficient system wastewater treatment.

Language: Английский

Surface‐Engineered 2D Bimetallic FeNi‐MOFs Derived from Layered Double Hydroxides for Photocatalytic Membranes with Enhanced Dye Fixation in Wastewater Treatment DOI Open Access

G. Karthikeyan,

M. Sakar,

Muthu Austeria P

et al.

Small, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 29, 2024

FeNi-based layered double hydroxides (LDHs) are used as precursors to derive bimetallic FeNi-metal organic frameworks (D-FeNi MOFs) with terephthalic acid ligands, offering enhanced properties compared conventionally prepared FeNi-MOFs (C-FeNi MOFs). D-FeNi MOFs exhibited superior structural, surface, and electrochemical features, confirmed by density functional theory (DFT) studies, which also predicted their catalytic mechanism. Band edge potential calculations through Mott-Schottky analysis revealed favorable redox potential, charge transfer, reduced recombination resistance, explaining photocatalytic efficiency. degraded 91% of rhodamine B (RhB) 89% Congo red (CR), outperforming C-FeNi MOFs, 84% 77%, respectively. These incorporated (3, 5, 7 wt%) into polysulfone (PSU) membranes develop membranes. The wt% (FNM7) high water flux (54.4 L m-2h-1) dye (≈51.1 41.6 rejection rates ≈88% 90% for RhB CR, significantly surpassing bare FNM7 demonstrated anti-fouling regeneration (12.9% RhB, 9.6% CR degradation under sunlight) across three cycles. DFT studies showed FeNi centers weaken molecule bonds, aiding degradation, while carboxyl groups in formed robust hydrogen bonds PSU, ensuring no particle leaching. This highlights MOF-membranes an efficient system wastewater treatment.

Language: Английский

Citations

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