Facile Synthesis of ZIF-67-Incorporated Electrospun PVA Nanofibers Composite for Efficient Pb (II) Adsorption from Water: Docking and Experimental Studies

Singh, S and Pavithra, N and Uppara, B and Varshney, R and Shehata, N and Khan, NA and Joji, J and Singh, J and Ramamurthy, PC (2024) Facile Synthesis of ZIF-67-Incorporated Electrospun PVA Nanofibers Composite for Efficient Pb (II) Adsorption from Water: Docking and Experimental Studies. In: ACS ES and T Water .

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Abstract

This study addresses the critical challenge of removing lead (Pb2+) from wastewater due to its high toxicity. ZIF-67/PVA nanofibers were developed by integrating zeolitic imidazolate framework (ZIF-67) nanoparticles into electrospun poly(vinyl alcohol) (PVA). The synthesized material was thoroughly characterized using SEM, Raman spectroscopy, XRD, FTIR, TGA, and XPS. Adsorption studies of Pb2+ were conducted by varying parameters such as initial concentration, ZIF-67/PVA dosage, pH, and contact time. The adsorption process was analyzed using both linear and nonlinear isotherms, with the data best fitting the PFO and Avrami kinetic models (R2 = 0.98) and the nonlinear Freundlich isotherm model (R2 = 0.91). The nanofibers demonstrated high efficacy, with a maximum Pb2+ adsorption capacity of 140.3 mg g-1 at pH 6, initial ion concentration of 10 and 20 mg L-1 ZIF-67/PVA. Molecular docking simulations indicated that the adsorption primarily involves electrostatic and hydrogen-bonding interactions. The results highlight the potential of ZIF-67/PVA nanofibers for water treatment, emphasizing their effectiveness, regeneration capability, and suitability for sustainable remediation applications. © 2024 American Chemical Society.

Item Type:	Journal Article
Publication:	ACS ES and T Water
Publisher:	American Chemical Society
Additional Information:	The copyright for this article belongs to Publishers.
Department/Centre:	Division of Interdisciplinary Sciences > Interdisciplinary Centre for Water Research Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	16 Oct 2024 10:10
Last Modified:	16 Oct 2024 10:10
URI:	http://eprints.iisc.ac.in/id/eprint/86515

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