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000019343 0247_ $$2DOI$$a10.1016/j.jcis.2011.08.044
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000019343 084__ $$2WoS$$aChemistry, Physical
000019343 1001_ $$0P:(DE-HGF)0$$aTòth, A.$$b0
000019343 245__ $$aInteraction of phenol and dopamine with commercial MWCNTs
000019343 260__ $$aAmsterdam [u.a.]$$bElsevier$$c2011
000019343 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article
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000019343 440_0 $$03193$$aJournal of Colloid and Interface Science$$v364$$x0021-9797$$y469 - 475
000019343 500__ $$3POF3_Assignment on 2016-02-29
000019343 500__ $$aThe support of the FP7 Marie Curie IRSES program COMPOSITUM-Hybrid Nanocomposites (PIRSES-GA-2008-230790) is gratefully acknowledged. This work is related to the scientific program "Development of quality-oriented and harmonized R + D + I strategy and functional model at BME" supported by the New Szechenyi Plan (Project ID: TAMOP-4.2.1/B-09/1/KMR-2010-0002). We are grateful for access to the small angle X-ray camera at the French CRC beam line BM2 at the European Synchrotron Radiation Facility, Grenoble. We express our gratitude to G. Bosznai for his contribution to the gas adsorption measurements, to J. Fekete, P. Jenei, and L. Bezur for their help in UPLC and ICP analysis, respectively, and to M. Kallay for the molecular calculations.
000019343 520__ $$aWe report the adsorption of phenol and dopamine probe molecules, from aqueous solution with NaCl, on commercial multiwall carbon nanotubes (MWCNT) and on their carboxylated derivative. The nanotubes were fully characterized by high resolution transmission electron microscopy (HRTEM), small angle X-ray scattering (SAXS), potentiometric titration, electrophoretic mobility, and nitrogen adsorption (77K) measurements. The experimental pollutant isotherms, evaluated using the Langmuir model, showed that only 8-12% and 21-32% of the BET surface area was available for phenol and dopamine, respectively, which is far below the performance of activated carbons. Influence of the pH was more pronounced for the oxidized MWCNT, particularly with dopamine. The strongest interaction and the highest adsorption capacity occurred at pH 3 with both model pollutants on both types of nanotubes. Although the surface area available for adsorption is far lower in MWCNTs than in activated carbons, it is nonetheless substantial. In particular, delayed release of toxic molecules that are either adsorbed on the surface or trapped in the inner bore of such systems could constitute an environmental hazard. The need for further adsorption studies with regard to their environmental aspects is therefore pressing, particularly for MWCNTs in their functionalized state.
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000019343 65320 $$2Author$$aMultiwall carbon nanotube
000019343 65320 $$2Author$$aAdsorption
000019343 65320 $$2Author$$apH
000019343 65320 $$2Author$$aAqueous phase
000019343 65320 $$2Author$$aSAXS
000019343 650_2 $$2MeSH$$aAdsorption
000019343 650_2 $$2MeSH$$aDopamine: chemistry
000019343 650_2 $$2MeSH$$aElectrophoretic Mobility Shift Assay
000019343 650_2 $$2MeSH$$aHydrogen-Ion Concentration
000019343 650_2 $$2MeSH$$aMicroscopy, Electron, Transmission
000019343 650_2 $$2MeSH$$aNanotubes, Carbon
000019343 650_2 $$2MeSH$$aPhenol: chemistry
000019343 650_2 $$2MeSH$$aScattering, Radiation
000019343 650_2 $$2MeSH$$aThermodynamics
000019343 650_7 $$00$$2NLM Chemicals$$aNanotubes, Carbon
000019343 650_7 $$0108-95-2$$2NLM Chemicals$$aPhenol
000019343 650_7 $$2WoSType$$aJ
000019343 7001_ $$0P:(DE-HGF)0$$aTörcsik, A.$$b1
000019343 7001_ $$0P:(DE-HGF)0$$aTombàcz, E.$$b2
000019343 7001_ $$0P:(DE-HGF)0$$aOlàh, E.$$b3
000019343 7001_ $$0P:(DE-Juel1)VDB5029$$aHeggen, M.$$b4$$uFZJ
000019343 7001_ $$0P:(DE-HGF)0$$aLi, C.L.$$b5
000019343 7001_ $$0P:(DE-HGF)0$$aKlummpp, E.$$b6
000019343 7001_ $$0P:(DE-HGF)0$$aGeissler, E.$$b7
000019343 7001_ $$0P:(DE-HGF)0$$aLàszlò, K.$$b8
000019343 773__ $$0PERI:(DE-600)1469021-4$$a10.1016/j.jcis.2011.08.044$$gVol. 364$$n2$$p469–475$$q364$$tJournal of colloid and interface science$$v364$$x0021-9797$$y2011
000019343 8567_ $$uhttp://dx.doi.org/10.1016/j.jcis.2011.08.044
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