A comparison of defects produced on oxidation of carbon nanotubes by acid and UV ozone treatment

Abu Bakar Sulong, Che Husna Azhari, Rozli Zulkifli, Mohd Roslee Othman, Joohyuk Park

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

Oxidation using ozone in the presence of ultraviolet light was used to reduce the number of defects on carbon nanotubes. Fourier transform infra red spectra showed that the treatment promotes milder oxidation in introducing carboxylic functional group than conventional acid treatment. Transmission electron microscope images suggest that ozone treated carbon nanotubes suffered reduced attrition of broken tips, bent tips and bent walls in comparison to that of acid treated carbon nanotubes. Raman spectra indicate that the acid treated carbon nanotubes exhibited a lower IG:ID ratio than these ozone treated carbon nanotubes, confirming that the former samples contain a higher number of defects. While the dispersion stability of the ozone treated carbon nanotubes was found at a level similar to that of acid treated carbon nanotubes, the former showed a slightly larger amount of organic functional groups than the latter as suggested from the thermal gravimetric analysis.

Original languageEnglish
Pages (from-to)295-304
Number of pages10
JournalEuropean Journal of Scientific Research
Volume33
Issue number2
Publication statusPublished - 2009

Fingerprint

carbon nanotubes
Carbon Nanotubes
ozonation
Ozone
Nanotubes
Oxidation
defect
Carbon nanotubes
Carbon
Defects
ozone
oxidation
Acids
acids
acid
Functional groups
functional group
thermogravimetry
Attrition
Raman spectroscopy

Keywords

  • Chemical processes
  • Materials processing
  • Nanostructure
  • Oxidation

ASJC Scopus subject areas

  • General

Cite this

A comparison of defects produced on oxidation of carbon nanotubes by acid and UV ozone treatment. / Sulong, Abu Bakar; Azhari, Che Husna; Zulkifli, Rozli; Othman, Mohd Roslee; Park, Joohyuk.

In: European Journal of Scientific Research, Vol. 33, No. 2, 2009, p. 295-304.

Research output: Contribution to journalArticle

@article{7d0a541ecacf411ca3c79f241b35e29e,
title = "A comparison of defects produced on oxidation of carbon nanotubes by acid and UV ozone treatment",
abstract = "Oxidation using ozone in the presence of ultraviolet light was used to reduce the number of defects on carbon nanotubes. Fourier transform infra red spectra showed that the treatment promotes milder oxidation in introducing carboxylic functional group than conventional acid treatment. Transmission electron microscope images suggest that ozone treated carbon nanotubes suffered reduced attrition of broken tips, bent tips and bent walls in comparison to that of acid treated carbon nanotubes. Raman spectra indicate that the acid treated carbon nanotubes exhibited a lower IG:ID ratio than these ozone treated carbon nanotubes, confirming that the former samples contain a higher number of defects. While the dispersion stability of the ozone treated carbon nanotubes was found at a level similar to that of acid treated carbon nanotubes, the former showed a slightly larger amount of organic functional groups than the latter as suggested from the thermal gravimetric analysis.",
keywords = "Chemical processes, Materials processing, Nanostructure, Oxidation",
author = "Sulong, {Abu Bakar} and Azhari, {Che Husna} and Rozli Zulkifli and Othman, {Mohd Roslee} and Joohyuk Park",
year = "2009",
language = "English",
volume = "33",
pages = "295--304",
journal = "European Journal of Scientific Research",
issn = "1450-202X",
publisher = "European Journals Inc.",
number = "2",

}

TY - JOUR

T1 - A comparison of defects produced on oxidation of carbon nanotubes by acid and UV ozone treatment

AU - Sulong, Abu Bakar

AU - Azhari, Che Husna

AU - Zulkifli, Rozli

AU - Othman, Mohd Roslee

AU - Park, Joohyuk

PY - 2009

Y1 - 2009

N2 - Oxidation using ozone in the presence of ultraviolet light was used to reduce the number of defects on carbon nanotubes. Fourier transform infra red spectra showed that the treatment promotes milder oxidation in introducing carboxylic functional group than conventional acid treatment. Transmission electron microscope images suggest that ozone treated carbon nanotubes suffered reduced attrition of broken tips, bent tips and bent walls in comparison to that of acid treated carbon nanotubes. Raman spectra indicate that the acid treated carbon nanotubes exhibited a lower IG:ID ratio than these ozone treated carbon nanotubes, confirming that the former samples contain a higher number of defects. While the dispersion stability of the ozone treated carbon nanotubes was found at a level similar to that of acid treated carbon nanotubes, the former showed a slightly larger amount of organic functional groups than the latter as suggested from the thermal gravimetric analysis.

AB - Oxidation using ozone in the presence of ultraviolet light was used to reduce the number of defects on carbon nanotubes. Fourier transform infra red spectra showed that the treatment promotes milder oxidation in introducing carboxylic functional group than conventional acid treatment. Transmission electron microscope images suggest that ozone treated carbon nanotubes suffered reduced attrition of broken tips, bent tips and bent walls in comparison to that of acid treated carbon nanotubes. Raman spectra indicate that the acid treated carbon nanotubes exhibited a lower IG:ID ratio than these ozone treated carbon nanotubes, confirming that the former samples contain a higher number of defects. While the dispersion stability of the ozone treated carbon nanotubes was found at a level similar to that of acid treated carbon nanotubes, the former showed a slightly larger amount of organic functional groups than the latter as suggested from the thermal gravimetric analysis.

KW - Chemical processes

KW - Materials processing

KW - Nanostructure

KW - Oxidation

UR - http://www.scopus.com/inward/record.url?scp=68349128238&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=68349128238&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:68349128238

VL - 33

SP - 295

EP - 304

JO - European Journal of Scientific Research

JF - European Journal of Scientific Research

SN - 1450-202X

IS - 2

ER -