Journal
CHEMISTRYSELECT
Volume 7, Issue 5, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/slct.202104191
Keywords
adsorption; metal-organic frameworks; nanoclay; wastewater treatment
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Funding
- Iran National Elites Foundation (INEF) [15-89661]
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In this study, nanoclay was decorated with chromium-based MOF (MIL-101) nanostructures to enhance its dye adsorption capacity. The modified Clay/Cr-MOF composite showed a crystalline structure with high thermal stability, as well as a large specific surface area and porosity, which are beneficial for wastewater treatment. The adsorption experiments demonstrated that the MOF-modified nanoclay had excellent adsorption capacity and selective dye removal efficiency, with the ability to be regenerated for multiple cycles.
We demonstrate enhanced dye adsorption capacity of nanoclay by decoration with chromium-based MOF (MIL-101) nanostructure. The Clay/Cr-MOF composite exhibits a crystalline structure with high thermal stability. Moreover, it shows the superior specific surface area (4959 m(2)/g) and porosity which is beneficial for wastewater treatment. The developed Clay-MOF composite exhibits superb adsorption capacity toward various organic dyes as compared with existing materials. The adsorption experiments revealed high adsorption capacity and selective dye removal efficiency of MOF-modified nanoclay with reusability for multiple regeneration cycles. The adsorption kinetics was found to obey the pseudo-second-order kinetic model. These findings provide new insights into the application of such porous adsorbents for wastewater treatment applications.
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