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001     22330
005     20200702121622.0
024 7 _ |2 pmid
|a pmid:22494685
024 7 _ |2 DOI
|a 10.1016/j.jcis.2012.03.038
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|a WOS:000304432400046
037 _ _ |a PreJuSER-22330
041 _ _ |a eng
082 _ _ |a 540
084 _ _ |2 WoS
|a Chemistry, Physical
100 1 _ |0 P:(DE-Juel1)VDB63965
|a Li, C.
|b 0
|u FZJ
245 _ _ |a Surface-associated metal catalyst enhances the sorption of perfluorooctanoic acid to multi-walled carbon nanotubes
260 _ _ |a Amsterdam [u.a.]
|b Elsevier
|c 2012
300 _ _ |a 342 - 346
336 7 _ |a Journal Article
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440 _ 0 |0 3193
|a Journal of Colloid and Interface Science
|v 377
|x 0021-9797
500 _ _ |3 POF3_Assignment on 2016-02-29
500 _ _ |a Chengliang Li is grateful for a scholarship from the Deutscher Akademischer Austausch Dienst (DAAD). This study was financed by the National Natural Science Foundation of China (Project Nos.: 20977043 and 20777033).
520 _ _ |a The perfluorooctanoic acid (PFOA) sorption behavior of two commercial multi-walled carbon nanotubes (MWCNTs) (C 150 P from Bayer MaterialScience: BA and C-MWNTs from NanoTechLabs Inc.: CP) was investigated from aqueous solution. The BA nanotubes contained Co/Mn/Mg/Al catalysts both on their outer surface and in the inner bore while CP contained Fe-based catalyst typically within the tubes. The adsorption isotherms of (14)C-radiolabeled PFOA were measured by batch experiments and fitted to the Freundlich model (r(2)>0.92). The adsorption affinity and capacity on BA were significantly higher than on CP. Increasing the pH reduced the adsorption of PFOA due to the electrostatic interaction between the pH-sensitive surface and the adsorbate. Increasing the NaCl concentration led to the aggregation of the MWCNTs reducing the available surface and thus the adsorption capacity. Removal of the catalyst from the outer surface of BA changed the electrophoretic mobility from a positive to a negative value and also decreased the adsorbed amount of PFOA. The surface charge of the surface-associated metal catalyst favors the electrostatic sorption of PFOA. Such surface modifications may be a promising way to improve the sorption capacity of MWCNTs for pollutants such as PFOA and to broaden their potential application in water purification.
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650 _ 2 |2 MeSH
|a Adsorption
650 _ 2 |2 MeSH
|a Aluminum: chemistry
650 _ 2 |2 MeSH
|a Cobalt: chemistry
650 _ 2 |2 MeSH
|a Fluorocarbons: chemistry
650 _ 2 |2 MeSH
|a Hydrogen-Ion Concentration
650 _ 2 |2 MeSH
|a Magnesium: chemistry
650 _ 2 |2 MeSH
|a Manganese: chemistry
650 _ 2 |2 MeSH
|a Nanotubes, Carbon: chemistry
650 _ 2 |2 MeSH
|a Octanoic Acids: chemistry
650 _ 2 |2 MeSH
|a Osmolar Concentration
650 _ 2 |2 MeSH
|a Surface Properties
650 _ 7 |0 0
|2 NLM Chemicals
|a Fluorocarbons
650 _ 7 |0 0
|2 NLM Chemicals
|a Nanotubes, Carbon
650 _ 7 |0 0
|2 NLM Chemicals
|a Octanoic Acids
650 _ 7 |0 335-67-1
|2 NLM Chemicals
|a perfluorooctanoic acid
650 _ 7 |0 7429-90-5
|2 NLM Chemicals
|a Aluminum
650 _ 7 |0 7439-95-4
|2 NLM Chemicals
|a Magnesium
650 _ 7 |0 7439-96-5
|2 NLM Chemicals
|a Manganese
650 _ 7 |0 7440-48-4
|2 NLM Chemicals
|a Cobalt
650 _ 7 |2 WoSType
|a J
653 2 0 |2 Author
|a Perfluorooctanoic acid
653 2 0 |2 Author
|a Multi-walled carbon nanotubes
653 2 0 |2 Author
|a Metal catalyst
653 2 0 |2 Author
|a Sorption
700 1 _ |0 P:(DE-HGF)0
|a Schaeffer, A.
|b 1
700 1 _ |0 P:(DE-Juel1)VDB100855
|a Sequaris, J.M.
|b 2
|u FZJ
700 1 _ |0 P:(DE-HGF)0
|a Laszlo, K.
|b 3
700 1 _ |0 P:(DE-HGF)0
|a Toth, A.
|b 4
700 1 _ |0 P:(DE-HGF)0
|a Tombacz, E.
|b 5
700 1 _ |0 P:(DE-Juel1)129549
|a Vereecken, H.
|b 6
|u FZJ
700 1 _ |0 P:(DE-HGF)0
|a Ji, R.
|b 7
700 1 _ |0 P:(DE-Juel1)129484
|a Klumpp, E.
|b 8
|u FZJ
773 _ _ |0 PERI:(DE-600)1469021-4
|a 10.1016/j.jcis.2012.03.038
|g Vol. 377, p. 342 - 346
|p 342 - 346
|q 377<342 - 346
|t Journal of colloid and interface science
|v 377
|x 0021-9797
|y 2012
856 7 _ |u http://dx.doi.org/10.1016/j.jcis.2012.03.038
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