Controlling the quantity of γ-Fe inside multiwall carbon nano-onions: the key role of sulfur

Jiaxin Song; Xilong Guo; Lin Zhang; Omololu Odunmbaku; Hansong Wu; Shanling Wang; Jiqiu Wen; Aiqun Gu; Jian Guo; Hong Zhang; Filippo S. Boi

doi:10.1039/d2cc03651g

Controlling the quantity of γ-Fe inside multiwall carbon nano-onions: the key role of sulfur

Jiaxin Song, Xilong Guo, Lin Zhang, Omololu Odunmbaku, Hansong Wu, Shanling Wang, Jiqiu Wen, Aiqun Gu, Jian Guo, Hong Zhang^*, Filippo S. Boi^*

^*Corresponding author for this work

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

7 Citations (Scopus)

Abstract

One of the most interesting structural features of multiwall carbon onions (MWCNOs) and nanotubes (MWCNTs) is the excellent chemical stability, which allows in situ encapsulation of chosen magnetic materials of interest and multifunctional applications. In this letter, we present an innovative chemical vapour synthesis (CVS) approach, in which the inclusion of small quantities of sulfur during the pyrolysis of ferrocene/dichlorobenzene mixtures allows for an important control in the relative abundance of FCC γ-Fe, up to a maximum value of ∼86.5% (structural- and phase-control). The variation in the relative percentage of the encapsulated Fe-based phases was estimated by employing X-ray diffraction (XRD) and Rietveld refinement analyses. The magnetic characterization was achieved by employing superconducting quantum interference device (SQUID) magnetometry, with zero field cooled (ZFC) and field cooled (FC) curves acquired at applied fields of 300 Oe and ∼50 000 Oe.

Original language	English
Pages (from-to)	10040-10043
Number of pages	4
Journal	Chemical Communications
Volume	58
Issue number	72
DOIs	https://doi.org/10.1039/d2cc03651g
Publication status	Published - 10 Aug 2022
Externally published	Yes

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title = "Controlling the quantity of γ-Fe inside multiwall carbon nano-onions: the key role of sulfur",

abstract = "One of the most interesting structural features of multiwall carbon onions (MWCNOs) and nanotubes (MWCNTs) is the excellent chemical stability, which allows in situ encapsulation of chosen magnetic materials of interest and multifunctional applications. In this letter, we present an innovative chemical vapour synthesis (CVS) approach, in which the inclusion of small quantities of sulfur during the pyrolysis of ferrocene/dichlorobenzene mixtures allows for an important control in the relative abundance of FCC γ-Fe, up to a maximum value of ∼86.5% (structural- and phase-control). The variation in the relative percentage of the encapsulated Fe-based phases was estimated by employing X-ray diffraction (XRD) and Rietveld refinement analyses. The magnetic characterization was achieved by employing superconducting quantum interference device (SQUID) magnetometry, with zero field cooled (ZFC) and field cooled (FC) curves acquired at applied fields of 300 Oe and ∼50 000 Oe.",

author = "Jiaxin Song and Xilong Guo and Lin Zhang and Omololu Odunmbaku and Hansong Wu and Shanling Wang and Jiqiu Wen and Aiqun Gu and Jian Guo and Hong Zhang and Boi, {Filippo S.}",

note = "Publisher Copyright: {\textcopyright} 2022 The Royal Society of Chemistry.",

year = "2022",

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doi = "10.1039/d2cc03651g",

language = "English",

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TY - JOUR

T1 - Controlling the quantity of γ-Fe inside multiwall carbon nano-onions

T2 - the key role of sulfur

AU - Song, Jiaxin

AU - Guo, Xilong

AU - Zhang, Lin

AU - Odunmbaku, Omololu

AU - Wu, Hansong

AU - Wang, Shanling

AU - Wen, Jiqiu

AU - Gu, Aiqun

AU - Guo, Jian

AU - Zhang, Hong

AU - Boi, Filippo S.

PY - 2022/8/10

Y1 - 2022/8/10

N2 - One of the most interesting structural features of multiwall carbon onions (MWCNOs) and nanotubes (MWCNTs) is the excellent chemical stability, which allows in situ encapsulation of chosen magnetic materials of interest and multifunctional applications. In this letter, we present an innovative chemical vapour synthesis (CVS) approach, in which the inclusion of small quantities of sulfur during the pyrolysis of ferrocene/dichlorobenzene mixtures allows for an important control in the relative abundance of FCC γ-Fe, up to a maximum value of ∼86.5% (structural- and phase-control). The variation in the relative percentage of the encapsulated Fe-based phases was estimated by employing X-ray diffraction (XRD) and Rietveld refinement analyses. The magnetic characterization was achieved by employing superconducting quantum interference device (SQUID) magnetometry, with zero field cooled (ZFC) and field cooled (FC) curves acquired at applied fields of 300 Oe and ∼50 000 Oe.

AB - One of the most interesting structural features of multiwall carbon onions (MWCNOs) and nanotubes (MWCNTs) is the excellent chemical stability, which allows in situ encapsulation of chosen magnetic materials of interest and multifunctional applications. In this letter, we present an innovative chemical vapour synthesis (CVS) approach, in which the inclusion of small quantities of sulfur during the pyrolysis of ferrocene/dichlorobenzene mixtures allows for an important control in the relative abundance of FCC γ-Fe, up to a maximum value of ∼86.5% (structural- and phase-control). The variation in the relative percentage of the encapsulated Fe-based phases was estimated by employing X-ray diffraction (XRD) and Rietveld refinement analyses. The magnetic characterization was achieved by employing superconducting quantum interference device (SQUID) magnetometry, with zero field cooled (ZFC) and field cooled (FC) curves acquired at applied fields of 300 Oe and ∼50 000 Oe.

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DO - 10.1039/d2cc03651g

M3 - Article

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AN - SCOPUS:85136737833

SN - 1359-7345

VL - 58

SP - 10040

EP - 10043

JO - Chemical Communications

JF - Chemical Communications

IS - 72

ER -

Controlling the quantity of γ-Fe inside multiwall carbon nano-onions: the key role of sulfur

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