Adsorption of Methyl Orange on a Novel Palygorskite/UiO-66 Nanocomposite

Herein, a novel composite material containing UiO-66 and palygorskite (Pal) clay mineral was prepared using a facile one-pot synthesis process. The material was studied using a variety of techniques and applied as did not affect the structure of the metal-organic framework (MOF) part, but induced a...

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Bibliographic Details
Published in:Applied sciences 2022-08, Vol.12 (15), p.7468
Main Authors: Vasiliadou, Ioanna A., Ioannidou, Thaleia, Anagnostopoulou, Maria, Polyzotou, Antonios, Papoulis, Dimitrios, Christoforidis, Konstantinos C.
Format: Article
Language:English
Subjects:
Acids
Adsorbents
Adsorption
Clay
Clay minerals
Composite materials
dye adsorption
Dyes
Efficiency
Equilibrium
Experiments
Membrane separation
Metal-organic frameworks
methyl orange
Minerals
Morphology
Nanocomposites
palygorskite
Pollutants
Porous materials
Synergistic effect
Thermogravimetric analysis
UiO-66
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Summary:Herein, a novel composite material containing UiO-66 and palygorskite (Pal) clay mineral was prepared using a facile one-pot synthesis process. The material was studied using a variety of techniques and applied as did not affect the structure of the metal-organic framework (MOF) part, but induced a small increase in specific surface area. The developed Pal/UiO-66 composite presented excellent adsorption efficiency against MO removal, as evidenced by detailed kinetic and isotherm experiments. An impressive maximum adsorption capacity at equilibrium was evidenced; 340 mg g−1 at pH = 5 and T = 25 °C. This corresponds to a 34.5 % increase compared with pure UiO-66, considering only the MOF content. Furthermore, the Pal/UiO-66 composite was proven stable and highly recyclable, losing less than 9% of the removal capacity after five consecutive cycles. The study highlights the synergistic effect of the coupling of MOF structures with low-cost and abundant clay minerals for the development of advanced absorbents.
ISSN:2076-3417
2076-3417
DOI:10.3390/app12157468