Comparison of functionalized carbon nanofibers and multi-walled carbon nanotubes as supports for Fe-Co nanoparticles

Deborah Vidick; Marcus Herlitschke; Claude Poleunis; Arnaud Delcorte; Raphael P. Hermann; Michel Devillers; Sophie Hermans

doi:10.1039/c2ta00131d

Comparison of functionalized carbon nanofibers and multi-walled carbon nanotubes as supports for Fe-Co nanoparticles

Deborah Vidick, Marcus Herlitschke, Claude Poleunis, Arnaud Delcorte, Raphael P. Hermann, Michel Devillers, Sophie Hermans

Research output: Contribution to journal › Article › peer-review

24 Scopus citations

Abstract

Multi-walled carbon nanotubes (MWCNT) and nanofibers (CNF) have been functionalized at their surfaces with chelating phosphine (PPh₂) and ammonium (NMe₃⁺) groups, as anchoring sites for metal complexes. The surface functionalization has been monitored by XPS, elemental analyses, N₂ physisorption and/or SEM surface morphology analysis at each step. Bimetallic Fe-Co nanoparticles from two different starting cluster complexes, [HFeCo₃(CO)₁₂] (1) and (NEt₄) [FeCo₃(CO)₁₂] (2), have been deposited onto the surfaces of the functionalized MWCNT and CNF as well as their pristine forms for comparison. The samples have been fully characterized before and after thermal treatment. The obtained nanoparticles were shown by TEM to be better dispersed and of smaller size on functionalized than on pristine supports. Magnetic characterization revealed blocked superparamagnetic Fe-Co nanoparticles together with paramagnetic ions on CNF as well as MWCNT.

Original language	English
Pages (from-to)	2050-2063
Number of pages	14
Journal	Journal of Materials Chemistry A
Volume	1
Issue number	6
DOIs	https://doi.org/10.1039/c2ta00131d
State	Published - Feb 14 2013
Externally published	Yes

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title = "Comparison of functionalized carbon nanofibers and multi-walled carbon nanotubes as supports for Fe-Co nanoparticles",

abstract = "Multi-walled carbon nanotubes (MWCNT) and nanofibers (CNF) have been functionalized at their surfaces with chelating phosphine (PPh2) and ammonium (NMe3+) groups, as anchoring sites for metal complexes. The surface functionalization has been monitored by XPS, elemental analyses, N2 physisorption and/or SEM surface morphology analysis at each step. Bimetallic Fe-Co nanoparticles from two different starting cluster complexes, [HFeCo3(CO)12] (1) and (NEt4) [FeCo3(CO)12] (2), have been deposited onto the surfaces of the functionalized MWCNT and CNF as well as their pristine forms for comparison. The samples have been fully characterized before and after thermal treatment. The obtained nanoparticles were shown by TEM to be better dispersed and of smaller size on functionalized than on pristine supports. Magnetic characterization revealed blocked superparamagnetic Fe-Co nanoparticles together with paramagnetic ions on CNF as well as MWCNT.",

author = "Deborah Vidick and Marcus Herlitschke and Claude Poleunis and Arnaud Delcorte and Hermann, {Raphael P.} and Michel Devillers and Sophie Hermans",

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doi = "10.1039/c2ta00131d",

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T1 - Comparison of functionalized carbon nanofibers and multi-walled carbon nanotubes as supports for Fe-Co nanoparticles

AU - Vidick, Deborah

AU - Herlitschke, Marcus

AU - Poleunis, Claude

AU - Delcorte, Arnaud

AU - Hermann, Raphael P.

AU - Devillers, Michel

AU - Hermans, Sophie

PY - 2013/2/14

Y1 - 2013/2/14

N2 - Multi-walled carbon nanotubes (MWCNT) and nanofibers (CNF) have been functionalized at their surfaces with chelating phosphine (PPh2) and ammonium (NMe3+) groups, as anchoring sites for metal complexes. The surface functionalization has been monitored by XPS, elemental analyses, N2 physisorption and/or SEM surface morphology analysis at each step. Bimetallic Fe-Co nanoparticles from two different starting cluster complexes, [HFeCo3(CO)12] (1) and (NEt4) [FeCo3(CO)12] (2), have been deposited onto the surfaces of the functionalized MWCNT and CNF as well as their pristine forms for comparison. The samples have been fully characterized before and after thermal treatment. The obtained nanoparticles were shown by TEM to be better dispersed and of smaller size on functionalized than on pristine supports. Magnetic characterization revealed blocked superparamagnetic Fe-Co nanoparticles together with paramagnetic ions on CNF as well as MWCNT.

AB - Multi-walled carbon nanotubes (MWCNT) and nanofibers (CNF) have been functionalized at their surfaces with chelating phosphine (PPh2) and ammonium (NMe3+) groups, as anchoring sites for metal complexes. The surface functionalization has been monitored by XPS, elemental analyses, N2 physisorption and/or SEM surface morphology analysis at each step. Bimetallic Fe-Co nanoparticles from two different starting cluster complexes, [HFeCo3(CO)12] (1) and (NEt4) [FeCo3(CO)12] (2), have been deposited onto the surfaces of the functionalized MWCNT and CNF as well as their pristine forms for comparison. The samples have been fully characterized before and after thermal treatment. The obtained nanoparticles were shown by TEM to be better dispersed and of smaller size on functionalized than on pristine supports. Magnetic characterization revealed blocked superparamagnetic Fe-Co nanoparticles together with paramagnetic ions on CNF as well as MWCNT.

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DO - 10.1039/c2ta00131d

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SN - 2050-7488

VL - 1

SP - 2050

EP - 2063

JO - Journal of Materials Chemistry A

JF - Journal of Materials Chemistry A

IS - 6

ER -

Comparison of functionalized carbon nanofibers and multi-walled carbon nanotubes as supports for Fe-Co nanoparticles

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