Change of magnetic behaviour of nitrogenated carbon nanotubes on chlorination/oxidation

Sekhar C. Ray; Sanyasi Sitha; P. Papakonstantinou

doi:10.1504/IJNT.2017.082456

Change of magnetic behaviour of nitrogenated carbon nanotubes on chlorination/oxidation

Sekhar C. Ray, Sanyasi Sitha, P. Papakonstantinou

Chemical Sciences

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

2 Citations (Scopus)

Abstract

The magnetic effects of chlorine and oxygen functionalised NCNTs have been studied. The diamagnetic behaviour of non-functionalised NCNTs changes to paramagnetic behaviour on Cl-functionalisation; on O-functionalisation NCNTs become ferromagnetic. A prominent cusp-like behaviour is observed at around ≈45 K in M_FC and M_ZFC measurements, further confirming the ferromagnetic behaviour of O-functionalised NCNTs; but Cl-functionalised NCNTs do not shows any cusp-like behaviour indicating formation of paramagnetic behaviour. The change of magnetic behaviour occurs owing to formation of different bonding with carbon/nitrogen and/or Fe-catalyst atoms that is verified with theoretical calculation. The initial computational results show that the differential bonding patterns of the Cl-functionalised and the O-functionalised NCNTs are the main cause for the different magnetic behaviour in these systems.

Original language	English
Pages (from-to)	356-366
Number of pages	11
Journal	International Journal of Nanotechnology
Volume	14
Issue number	1-6
DOIs	https://doi.org/10.1504/IJNT.2017.082456
Publication status	Published - 2017

Keywords

DFT
Density functional theory
Functionalised with chlorine (NCNTs:Cl)
Functionalised with oxygen (NCNTs:O)
Magnetisation
NCNTs
Nitrogenised carbon nanotubes

ASJC Scopus subject areas

Bioengineering
Condensed Matter Physics
Electrical and Electronic Engineering
Materials Chemistry

Access to Document

10.1504/IJNT.2017.082456

Cite this

@article{e4bad59703c745aeb7501c38c380457f,

title = "Change of magnetic behaviour of nitrogenated carbon nanotubes on chlorination/oxidation",

abstract = "The magnetic effects of chlorine and oxygen functionalised NCNTs have been studied. The diamagnetic behaviour of non-functionalised NCNTs changes to paramagnetic behaviour on Cl-functionalisation; on O-functionalisation NCNTs become ferromagnetic. A prominent cusp-like behaviour is observed at around ≈45 K in MFC and MZFC measurements, further confirming the ferromagnetic behaviour of O-functionalised NCNTs; but Cl-functionalised NCNTs do not shows any cusp-like behaviour indicating formation of paramagnetic behaviour. The change of magnetic behaviour occurs owing to formation of different bonding with carbon/nitrogen and/or Fe-catalyst atoms that is verified with theoretical calculation. The initial computational results show that the differential bonding patterns of the Cl-functionalised and the O-functionalised NCNTs are the main cause for the different magnetic behaviour in these systems.",

keywords = "DFT, Density functional theory, Functionalised with chlorine (NCNTs:Cl), Functionalised with oxygen (NCNTs:O), Magnetisation, NCNTs, Nitrogenised carbon nanotubes",

author = "Ray, {Sekhar C.} and Sanyasi Sitha and P. Papakonstantinou",

note = "Publisher Copyright: Copyright {\textcopyright} 2017 Inderscience Enterprises Ltd.",

year = "2017",

doi = "10.1504/IJNT.2017.082456",

language = "English",

volume = "14",

pages = "356--366",

journal = "International Journal of Nanotechnology",

issn = "1475-7435",

publisher = "Inderscience Enterprises Ltd",

number = "1-6",

}

TY - JOUR

T1 - Change of magnetic behaviour of nitrogenated carbon nanotubes on chlorination/oxidation

AU - Ray, Sekhar C.

AU - Sitha, Sanyasi

AU - Papakonstantinou, P.

PY - 2017

Y1 - 2017

N2 - The magnetic effects of chlorine and oxygen functionalised NCNTs have been studied. The diamagnetic behaviour of non-functionalised NCNTs changes to paramagnetic behaviour on Cl-functionalisation; on O-functionalisation NCNTs become ferromagnetic. A prominent cusp-like behaviour is observed at around ≈45 K in MFC and MZFC measurements, further confirming the ferromagnetic behaviour of O-functionalised NCNTs; but Cl-functionalised NCNTs do not shows any cusp-like behaviour indicating formation of paramagnetic behaviour. The change of magnetic behaviour occurs owing to formation of different bonding with carbon/nitrogen and/or Fe-catalyst atoms that is verified with theoretical calculation. The initial computational results show that the differential bonding patterns of the Cl-functionalised and the O-functionalised NCNTs are the main cause for the different magnetic behaviour in these systems.

AB - The magnetic effects of chlorine and oxygen functionalised NCNTs have been studied. The diamagnetic behaviour of non-functionalised NCNTs changes to paramagnetic behaviour on Cl-functionalisation; on O-functionalisation NCNTs become ferromagnetic. A prominent cusp-like behaviour is observed at around ≈45 K in MFC and MZFC measurements, further confirming the ferromagnetic behaviour of O-functionalised NCNTs; but Cl-functionalised NCNTs do not shows any cusp-like behaviour indicating formation of paramagnetic behaviour. The change of magnetic behaviour occurs owing to formation of different bonding with carbon/nitrogen and/or Fe-catalyst atoms that is verified with theoretical calculation. The initial computational results show that the differential bonding patterns of the Cl-functionalised and the O-functionalised NCNTs are the main cause for the different magnetic behaviour in these systems.

KW - DFT

KW - Density functional theory

KW - Functionalised with chlorine (NCNTs:Cl)

KW - Functionalised with oxygen (NCNTs:O)

KW - Magnetisation

KW - NCNTs

KW - Nitrogenised carbon nanotubes

UR - http://www.scopus.com/inward/record.url?scp=85014076144&partnerID=8YFLogxK

U2 - 10.1504/IJNT.2017.082456

DO - 10.1504/IJNT.2017.082456

M3 - Article

AN - SCOPUS:85014076144

SN - 1475-7435

VL - 14

SP - 356

EP - 366

JO - International Journal of Nanotechnology

JF - International Journal of Nanotechnology

IS - 1-6

ER -

Change of magnetic behaviour of nitrogenated carbon nanotubes on chlorination/oxidation

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this