%0 Journal Article %T Hybrid organic-inorganic nanotubes effectively adsorb some organic pollutants in aqueous phase %+ Laboratoire Interdisciplinaire sur l'Organisation Nanométrique et Supramoléculaire (LIONS) %+ Department of Agricultural Sciences, Division of Grape and Wine Sciences %+ Department of Neuroscience and Reproductive and Odontostomatologic Sciences %+ Department of Materials Science and Chemical Engineering (DMSCE) %A Nasi, Roberto %A Sannino, Filomena %A Picot, Pierre %A Thill, Antoine %A Oliviero, Olimpia %A Esposito, Serena %A Armandi, Marco %A Bonelli, Barbara %< avec comité de lecture %@ 0169-1317 %J Applied Clay Science %I Elsevier %V 186 %P 105449 %8 2020-01-28 %D 2020 %R 10.1016/j.clay.2020.105449 %Z Chemical Sciences/Material chemistryJournal articles %X Methylimogolite nanotubes (Me-IMO NTs, chemical composition (OH)3Al2O3SiCH3) are characterized by having an inner hydrophobic (fully-methylated) surface. Conversely, the outer surface is hydrophilic and positively charged below the point of zero charge (at pH = 8.6), due to the Al(OH)Al + H+ = Al(OH)2+Al equilibrium occurring at the outer surface of the NTs when they are dispersed in water.In this work, adsorption of MCPA (2-methyl-4-chlorophenoxyacetic acid) and of dichloromethane (DCM) on Me-IMO NTs was studied by means of both adsorption/desorption measurements in batch conditions (at room temperature and at different pH value) and Small Angle X-rays Scattering (SAXS).MCPA, which partially dissociates in water (pKa = 2.90), is mainly adsorbed at the outer surface of the NTs, although measurements in batch conditions show that other types of interaction occur (i.e. H-bond) at higher MCPA concentration. SAXS measurements confirm that MCPA has not entered the NTs inner pores.Interaction of the NTs with DCM, instead, is more complex: SAXS measurements show that DCM molecules interact with the NTs inner surface, whereas batch experiments indicate that additional interactions take place with the outer surface of the NTs. %G English %2 https://cea.hal.science/cea-02458782/document %2 https://cea.hal.science/cea-02458782/file/S0169131720300144.pdf %L cea-02458782 %U https://cea.hal.science/cea-02458782 %~ CEA %~ CNRS %~ PUBNIMBE %~ DSV %~ INC-CNRS %~ IRAMIS-NIMBE %~ CEA-UPSAY %~ UNIV-PARIS-SACLAY %~ CEA-DRF %~ TEST-HALCNRS %~ UNIVERSITE-PARIS-SACLAY %~ GS-ENGINEERING %~ IRAMIS %~ GS-CHIMIE %~ GS-PHYSIQUE %~ INSTITUT-SCIENCES-LUMIERE %~ ELSEVIER %~ TEST2-HALCNRS