NDLI: $UiO-66/Palygorskite/TiO_{2}$ Ternary Composites as Adsorbents and Photocatalysts for Methyl Orange Removal

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$UiO-66/Palygorskite/TiO_{2}$ Ternary Composites as Adsorbents and Photocatalysts for Methyl Orange Removal

Content Provider	MDPI
Author	Ioannidou, Thaleia Anagnostopoulou, Maria Papoulis, Dimitrios Christoforidis, Konstantinos C. Vasiliadou, Ioanna A.
Copyright Year	2022
Description	Metal–organic frameworks are recognized as a new generation of emerging porous materials in a variety of applications including adsorption and photocatalysis. The present study presents the development of ternary composite materials made through the coupling of UiO-66 with palygorskite (Pal) clay mineral and titanium dioxide $(TiO_{2}$) applied as adsorbent and photocatalyst for the removal of methyl orange (MO) from aqueous solutions as a typical anionic dye. The prepared materials were characterized using XRD, ATR, DR UV/Vis, and TGA analysis. Detailed kinetic experiments revealed that the presence of the clay at low amounts in the composite outperformed the adsorption efficiency of pure UiO-66, increasing MO adsorption by ca. 8%. In addition, coupling Pal/UiO-66 with $TiO_{2}$ for the production of ternary composites provided photocatalytic properties that resulted in complete removal of MO. This was not observed in the pure UiO-66, the Pal/UiO-66 composite, or the pure $TiO_{2}$ material. This study presents the first example of clay $mineral/MOF/TiO_{2}$ composites with improved performance in removing dyes from aqueous solutions and highlights the importance of coupling MOFs with low-cost clay minerals and photocatalysts for the development of multifunctional advanced composites.
Starting Page	8223
e-ISSN	20763417
DOI	10.3390/app12168223
Journal	Applied Sciences
Issue Number	16
Volume Number	12
Language	English
Publisher	MDPI
Publisher Date	2022-08-17
Access Restriction	Open
Subject Keyword	Applied Sciences Environmental Engineering Metal–organic Frameworks Uio-66 Palygorskite Anatase Tio2 Methyl Orange Dye Adsorption Dye Degradation Photocatalysis
Content Type	Text
Resource Type	Article

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