UiO-66/Palygorskite/TiO<sub>2</sub> Ternary Composites as Adsorbents and Photocatalysts for Methyl Orange Removal
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 mi...
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MDPI AG
2022-08-01
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| Online Access: | https://www.mdpi.com/2076-3417/12/16/8223 |
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| author | Thaleia Ioannidou Maria Anagnostopoulou Dimitrios Papoulis Konstantinos C. Christoforidis Ioanna A. Vasiliadou |
| author_facet | Thaleia Ioannidou Maria Anagnostopoulou Dimitrios Papoulis Konstantinos C. Christoforidis Ioanna A. Vasiliadou |
| author_sort | Thaleia Ioannidou |
| collection | DOAJ |
| 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<sub>2</sub>) 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<sub>2</sub> 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<sub>2</sub> material. This study presents the first example of clay mineral/MOF/TiO<sub>2</sub> 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. |
| first_indexed | 2024-03-09T10:02:59Z |
| format | Article |
| id | doaj.art-f39a96c5a45e46eaab945b071b77d92b |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-09T10:02:59Z |
| publishDate | 2022-08-01 |
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| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-f39a96c5a45e46eaab945b071b77d92b2023-12-01T23:21:51ZengMDPI AGApplied Sciences2076-34172022-08-011216822310.3390/app12168223UiO-66/Palygorskite/TiO<sub>2</sub> Ternary Composites as Adsorbents and Photocatalysts for Methyl Orange RemovalThaleia Ioannidou0Maria Anagnostopoulou1Dimitrios Papoulis2Konstantinos C. Christoforidis3Ioanna A. Vasiliadou4Department of Environmental Engineering, Democritus University of Thrace, 67100 Xanthi, GreeceInstitute of Chemistry and Processes for Energy, Environment and Health (ICPEES) UMR7515 CNRS, ECPM, University of Strasbourg, 25 rue Becquerel, CEDEX 2, 67087 Strasbourg, FranceDepartment of Geology, University of Patras, 26504 Patras, GreeceDepartment of Environmental Engineering, Democritus University of Thrace, 67100 Xanthi, GreeceDepartment of Environmental Engineering, Democritus University of Thrace, 67100 Xanthi, GreeceMetal–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<sub>2</sub>) 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<sub>2</sub> 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<sub>2</sub> material. This study presents the first example of clay mineral/MOF/TiO<sub>2</sub> 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.https://www.mdpi.com/2076-3417/12/16/8223metal–organic frameworksUiO-66palygorskiteanataseTiO<sub>2</sub>methyl orange |
| spellingShingle | Thaleia Ioannidou Maria Anagnostopoulou Dimitrios Papoulis Konstantinos C. Christoforidis Ioanna A. Vasiliadou UiO-66/Palygorskite/TiO<sub>2</sub> Ternary Composites as Adsorbents and Photocatalysts for Methyl Orange Removal Applied Sciences metal–organic frameworks UiO-66 palygorskite anatase TiO<sub>2</sub> methyl orange |
| title | UiO-66/Palygorskite/TiO<sub>2</sub> Ternary Composites as Adsorbents and Photocatalysts for Methyl Orange Removal |
| title_full | UiO-66/Palygorskite/TiO<sub>2</sub> Ternary Composites as Adsorbents and Photocatalysts for Methyl Orange Removal |
| title_fullStr | UiO-66/Palygorskite/TiO<sub>2</sub> Ternary Composites as Adsorbents and Photocatalysts for Methyl Orange Removal |
| title_full_unstemmed | UiO-66/Palygorskite/TiO<sub>2</sub> Ternary Composites as Adsorbents and Photocatalysts for Methyl Orange Removal |
| title_short | UiO-66/Palygorskite/TiO<sub>2</sub> Ternary Composites as Adsorbents and Photocatalysts for Methyl Orange Removal |
| title_sort | uio 66 palygorskite tio sub 2 sub ternary composites as adsorbents and photocatalysts for methyl orange removal |
| topic | metal–organic frameworks UiO-66 palygorskite anatase TiO<sub>2</sub> methyl orange |
| url | https://www.mdpi.com/2076-3417/12/16/8223 |
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