Magnetic poly(vinylpyridine)-coated carbon nanotubes: An efficient supramolecular tool for wastewater purification

Laura Maggini, Jean Marie Raquez, Riccardo Marega, Jennifer Jensen Ahrens, Florent Pineux, Franck Meyer, Philippe Dubois, Davide Bonifazi

Résultats de recherche: Contribution à un journal/une revueArticle

Résumé

Herein, we report the first example of a supramolecular carbon nanotube (CNT)-based magnetic depolluting agent for divalent metal ion (M2+) removal from aqueous solutions. In particular, magnetic multi-walled carbon nanotubes (m-MWCNTs) coated with poly(vinylpyridine) (PVPy) self-aggregate in aqueous solutions that contain divalent metal ions (such as Zn2+, Cu2+ and Pb2+) to form tight insoluble bundles in which the M2+ ions remain trapped through pyridyl-M2+-pyridyl interactions. Magnetic filtration ultimately affords the efficient separation of the depolluted solution from the precipitated M2+-CNT agglomerates. Upon acid treatment, the supramolecular threads could be disassembled to afford the free CNT-polymer hybrid, thus allowing recycling of the depolluting agent. All materials and complexation/decomplexation steps were thoroughly characterised by using thermogravimetric analysis (TGA), X-ray photoelectron spectroscopy (XPS), transmission and scanning electron microscopy (TEM and SEM, respectively). The quantification of the M2+ residual concentrations in water was evaluated by using inductively coupled plasma optical emission spectroscopy (ICP-OES), which showed that, depending on the metal cation, this material can remove up to 99 % of the contaminant.

langue originaleAnglais
Pages (de - à)367-373
Nombre de pages7
journalChemSusChem
Volume6
Numéro de publication2
Les DOIs
étatPublié - 1 févr. 2013

Empreinte digitale

Carbon Nanotubes
Purification
purification
Carbon nanotubes
Wastewater
wastewater
Metal ions
ion
transmission electron microscopy
metal
aqueous solution
scanning electron microscopy
Trapped ions
Transmission electron microscopy
Optical emission spectroscopy
Scanning electron microscopy
Inductively coupled plasma
Complexation
complexation
X-ray spectroscopy

Citer ceci

Maggini, Laura ; Raquez, Jean Marie ; Marega, Riccardo ; Jensen Ahrens, Jennifer ; Pineux, Florent ; Meyer, Franck ; Dubois, Philippe ; Bonifazi, Davide. / Magnetic poly(vinylpyridine)-coated carbon nanotubes : An efficient supramolecular tool for wastewater purification. Dans: ChemSusChem. 2013 ; Vol 6, Numéro 2. p. 367-373.
@article{4e458cc017cc48daa6d3907793498eba,
title = "Magnetic poly(vinylpyridine)-coated carbon nanotubes: An efficient supramolecular tool for wastewater purification",
abstract = "Herein, we report the first example of a supramolecular carbon nanotube (CNT)-based magnetic depolluting agent for divalent metal ion (M2+) removal from aqueous solutions. In particular, magnetic multi-walled carbon nanotubes (m-MWCNTs) coated with poly(vinylpyridine) (PVPy) self-aggregate in aqueous solutions that contain divalent metal ions (such as Zn2+, Cu2+ and Pb2+) to form tight insoluble bundles in which the M2+ ions remain trapped through pyridyl-M2+-pyridyl interactions. Magnetic filtration ultimately affords the efficient separation of the depolluted solution from the precipitated M2+-CNT agglomerates. Upon acid treatment, the supramolecular threads could be disassembled to afford the free CNT-polymer hybrid, thus allowing recycling of the depolluting agent. All materials and complexation/decomplexation steps were thoroughly characterised by using thermogravimetric analysis (TGA), X-ray photoelectron spectroscopy (XPS), transmission and scanning electron microscopy (TEM and SEM, respectively). The quantification of the M2+ residual concentrations in water was evaluated by using inductively coupled plasma optical emission spectroscopy (ICP-OES), which showed that, depending on the metal cation, this material can remove up to 99 {\%} of the contaminant.",
keywords = "carbon, environmental chemistry, lead, nanotubes, zinc",
author = "Laura Maggini and Raquez, {Jean Marie} and Riccardo Marega and {Jensen Ahrens}, Jennifer and Florent Pineux and Franck Meyer and Philippe Dubois and Davide Bonifazi",
year = "2013",
month = "2",
day = "1",
doi = "10.1002/cssc.201200413",
language = "English",
volume = "6",
pages = "367--373",
journal = "ChemSusChem",
issn = "1864-5631",
publisher = "Wiley-VCH Verlag",
number = "2",

}

Magnetic poly(vinylpyridine)-coated carbon nanotubes : An efficient supramolecular tool for wastewater purification. / Maggini, Laura; Raquez, Jean Marie; Marega, Riccardo; Jensen Ahrens, Jennifer; Pineux, Florent; Meyer, Franck; Dubois, Philippe; Bonifazi, Davide.

Dans: ChemSusChem, Vol 6, Numéro 2, 01.02.2013, p. 367-373.

Résultats de recherche: Contribution à un journal/une revueArticle

TY - JOUR

T1 - Magnetic poly(vinylpyridine)-coated carbon nanotubes

T2 - An efficient supramolecular tool for wastewater purification

AU - Maggini, Laura

AU - Raquez, Jean Marie

AU - Marega, Riccardo

AU - Jensen Ahrens, Jennifer

AU - Pineux, Florent

AU - Meyer, Franck

AU - Dubois, Philippe

AU - Bonifazi, Davide

PY - 2013/2/1

Y1 - 2013/2/1

N2 - Herein, we report the first example of a supramolecular carbon nanotube (CNT)-based magnetic depolluting agent for divalent metal ion (M2+) removal from aqueous solutions. In particular, magnetic multi-walled carbon nanotubes (m-MWCNTs) coated with poly(vinylpyridine) (PVPy) self-aggregate in aqueous solutions that contain divalent metal ions (such as Zn2+, Cu2+ and Pb2+) to form tight insoluble bundles in which the M2+ ions remain trapped through pyridyl-M2+-pyridyl interactions. Magnetic filtration ultimately affords the efficient separation of the depolluted solution from the precipitated M2+-CNT agglomerates. Upon acid treatment, the supramolecular threads could be disassembled to afford the free CNT-polymer hybrid, thus allowing recycling of the depolluting agent. All materials and complexation/decomplexation steps were thoroughly characterised by using thermogravimetric analysis (TGA), X-ray photoelectron spectroscopy (XPS), transmission and scanning electron microscopy (TEM and SEM, respectively). The quantification of the M2+ residual concentrations in water was evaluated by using inductively coupled plasma optical emission spectroscopy (ICP-OES), which showed that, depending on the metal cation, this material can remove up to 99 % of the contaminant.

AB - Herein, we report the first example of a supramolecular carbon nanotube (CNT)-based magnetic depolluting agent for divalent metal ion (M2+) removal from aqueous solutions. In particular, magnetic multi-walled carbon nanotubes (m-MWCNTs) coated with poly(vinylpyridine) (PVPy) self-aggregate in aqueous solutions that contain divalent metal ions (such as Zn2+, Cu2+ and Pb2+) to form tight insoluble bundles in which the M2+ ions remain trapped through pyridyl-M2+-pyridyl interactions. Magnetic filtration ultimately affords the efficient separation of the depolluted solution from the precipitated M2+-CNT agglomerates. Upon acid treatment, the supramolecular threads could be disassembled to afford the free CNT-polymer hybrid, thus allowing recycling of the depolluting agent. All materials and complexation/decomplexation steps were thoroughly characterised by using thermogravimetric analysis (TGA), X-ray photoelectron spectroscopy (XPS), transmission and scanning electron microscopy (TEM and SEM, respectively). The quantification of the M2+ residual concentrations in water was evaluated by using inductively coupled plasma optical emission spectroscopy (ICP-OES), which showed that, depending on the metal cation, this material can remove up to 99 % of the contaminant.

KW - carbon

KW - environmental chemistry

KW - lead

KW - nanotubes

KW - zinc

UR - http://www.scopus.com/inward/record.url?scp=84874914073&partnerID=8YFLogxK

U2 - 10.1002/cssc.201200413

DO - 10.1002/cssc.201200413

M3 - Article

C2 - 23239590

AN - SCOPUS:84874914073

VL - 6

SP - 367

EP - 373

JO - ChemSusChem

JF - ChemSusChem

SN - 1864-5631

IS - 2

ER -