Preparation and Upscaling of Zeolite@TiO2 Core‐shell for the Removal of Pb(II) and Methylene Blue Dye from Wastewater

The present work reports the preparation and adsorption kinetics of a Zeolite@TiO2 multifunctional adsorbent for the removal of heavy metal (Pb(II)) and organic pollutants (methylene blue) from wastewater. The design of the material is a core‐shell having a porous core of zeolite and the surface is...

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Bibliographic Details
Published in:ChemistrySelect (Weinheim) 2023-12, Vol.8 (48), p.n/a
Main Authors: Mittal, Tanu, Kant, Rishi, Goel, Mohit
Format: Article
Language:English
Subjects:
adsorbent
Core-shell
photodecomposition
water purification
zeolite
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Summary:The present work reports the preparation and adsorption kinetics of a Zeolite@TiO2 multifunctional adsorbent for the removal of heavy metal (Pb(II)) and organic pollutants (methylene blue) from wastewater. The design of the material is a core‐shell having a porous core of zeolite and the surface is supported with the growth of nano TiO2 for a tunable surface and interface designing for efficient wastewater treatment. The formation of Zeolite@TiO2 core‐shell has been characterized by XRD, XPS, SEM, TEM, and DRS spectroscopic techniques. BET surface analysis indicated increased surface area for efficient adsorption. The design of multifunctional adsorbent acts as a charged crossing point for quick adsorption and breakdown of pollutants in water. The adsorption of Pb(II) and methylene blue (MB) dye follows the Freundlich adsorption isotherm confirming presence of multilayer of TiO2 in the adsorption process. Complete adsorption for Pb(II) is achieved in 25 minutes whereas MB dye is completely adsorbed within 15 minutes with high adsorption capacities. Photocatalytic degradation activity for MB dye were also analyzed and indicated 30 mg/l was degraded in 10 min. The DRS and photoluminescence life time study support good photocatalytic activity. The regeneration and recyclability of the core‐shell material have also been studied and reported. Zeolite@TiO2 core‐shell particles have been synthesized, characterized and utilized for simultaneous and facile removal of Pb(II) and MB dye from contaminated water. XRD, XPS, SEM, TEM and BET surface analysis results confirmed uniform coating on zeolite surface. Adsorption kinetics of Pb(II) and MB dye indicated core‐shell particles possess good adsorption and photocatalytic activity.
ISSN:2365-6549
2365-6549
DOI:10.1002/slct.202303958