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Multiple pollutants removal by functionalized heterostructures based on Na-2-Mica

AuthorsPazos, M. Carolina CSIC; Ruiz Bravo, L.; Ramos, Sebastián E.; Osuna, Francisco J. CSIC ORCID; Pavón, Esperanza CSIC ORCID CVN ; Alba, María D. CSIC ORCID CVN
Thiol groups
Heavy metal
Issue Date2020
PublisherElsevier BV
CitationApplied Clay Science 196: 105749 (2020)
AbstractOrganomica, C8¿2-Mica, was obtained from a high charged synthetic mica, Na-2-Mica, by cation exchange reaction with octylammonium cations and these were used to host other bulky guest species such as polyhydroxy aluminium cations, Al1320. The hydrolization of 3-mercaptopropyltrimethoxysilane (MPTMS) allowed the covalent attachment with hydroxyl groups of the oligomeric cation, providing thiol groups that create specific adsorption sites, Al1320/SH. The structure of the adsorbents was analysed by XRD and Infrared spectroscopy and these were tested as an adsorbent for the removal of zinc and herbicide MCPA from aqueous solutions. C8¿2- Mica was the best adsorbent for MCPA and thiol groups favoured the adsorption of Zn2+. Moreover, Al1320/SH showed excellent adsorptive properties for the simultaneous adsorption of MCPA and Zn2+.
Identifiersissn: 0169-1317
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