Fabrication of superhydrophobic sorbent material via in-situ coating of melamine sponge with halloysite nanotube and fluoroalkylsilane using supercritical CO2 coating system for efficient oily water treatment

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dc.contributor.authorDuman, Osman
dc.contributor.authorCengiz, Ugur
dc.contributor.authorDiker, Ceren Ozcan
dc.contributor.authorGuresir, Sueleyman Mert
dc.contributor.authorTunc, Sibel
dc.contributor.authorCengiz, Candan
dc.date.accessioned2025-01-27T20:52:16Z
dc.date.available2025-01-27T20:52:16Z
dc.date.issued2025
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractThis study presents the preparation of a novel sorbent material with high performance and special wettability for oily water treatment, utilizing halloysite nanotube (HNT) and perfluorooctyl triethoxysilane (PFOTES). Fluoroalkyl silanes, such as PFOTES, offer significant advantages over other monomers and alkoxysilanes due to their superior water-repellent properties and high solubility in CO2 atmosphere, enabling homogeneous polymerization and coating. The modification of PFOTES with HNT was successfully achieved in the supercritical CO2 (scCO2) environment at 35 degrees C and 125 bar using a sol-gel technique. Subsequently, HNT-modified PFOTES nanoparticles were coated onto melamine sponge (MS) via a drainage technique, marking the first application of this method to create a superhydrophobic (WCA: 165.2 degrees) and superoleophilic (OCA: 0 degrees) sorbent material (MSPFOTES). The MS-PFOTES sorbent material, produced via a one-step, two-pot coating method, demonstrated exceptional sorption capacities ranging from 39.1 to 117.5 g/g for oily pollutants / organic solvents. Additionally, MS-PFOTES achieved an outstanding separation efficiency of 99.99 % for diesel-water mixtures in continuous separation processes. The fabricated material also exhibited remarkable thermal stability, chemical resistance, and robustness. Experimental findings obtained in this study highlight the significant potential of this innovative coating technique for the direct preparation of sorbent material with special wettability for oily water treatment.
dc.description.sponsorshipScientific and Technological Research Council of Turkey (TUBITAK) [221M385, BIDEB 2211-A]; TUBITAK
dc.description.sponsorshipThis study was supported by the Scientific and Technological Research Council of Turkey (TUBITAK) under the Grant Number 221M385 (TUBITAK Project Number: 221M385) . The authors thank to TUBITAK for their supports. C. Ozcan Diker thanks the Scientific and Technological Research Council of Turkey (TUBITAK) BIDEB 2211-A National Ph.D. Scholarship Program for the financial support.
dc.identifier.doi10.1016/j.seppur.2024.131069
dc.identifier.issn1383-5866
dc.identifier.issn1873-3794
dc.identifier.scopus2-s2.0-85212405050
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1016/j.seppur.2024.131069
dc.identifier.urihttps://hdl.handle.net/20.500.12428/25717
dc.identifier.volume360
dc.identifier.wosWOS:001392624900001
dc.identifier.wosqualityN/A
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier
dc.relation.ispartofSeparation and Purification Technology
dc.relation.publicationcategoryinfo:eu-repo/semantics/openAccess
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20250125
dc.subjectActivated halloysite nanotube
dc.subjectFluoroalkylsilane
dc.subjectSuperhydrophobic sponge-based sorbent
dc.subjectSelective oil removal
dc.subjectscCO2 coating system
dc.titleFabrication of superhydrophobic sorbent material via in-situ coating of melamine sponge with halloysite nanotube and fluoroalkylsilane using supercritical CO2 coating system for efficient oily water treatment
dc.typeArticle

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