Surface defect site density on single walled carbon nanotubes by titration

Douglas B. Mawhinney; Viktor Naumenko; Anya Kuznetsova; John T. Yates; J. Liu; R. E. Smalley

doi:10.1016/S0009-2614(00)00526-1

Surface defect site density on single walled carbon nanotubes by titration

Douglas B. Mawhinney^*
, Viktor Naumenko
, Anya Kuznetsova
, John T. Yates
, J. Liu
, R. E. Smalley

^*Corresponding author for this work

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

376 Scopus citations

Abstract

Closed end single walled carbon nanotubes (c-SWNT) purified by acidic oxidation have been studied in order to determine the fraction of oxidized carbon sites present. This has been done by measuring the evolution of CO₂(g) and CO(g) on heating to 1273 K. Following a 1273 K treatment, the defect sites were titrated repeatedly with O₃. The results indicate that ~5% of the carbon atoms in the c-SWNT samples pretreated to 1273 K are located at defective sites, capable of facile oxidation by O₃. This high defect site density indicates that a significant number of these sites exist on the graphene walls of the nanotubes.

Original language	English
Pages (from-to)	213-216
Number of pages	4
Journal	Chemical Physics Letters
Volume	324
Issue number	1-3
DOIs	https://doi.org/10.1016/S0009-2614(00)00526-1
State	Published - 30 Jun 2000
Externally published	Yes

ASJC Scopus subject areas

General Physics and Astronomy
Physical and Theoretical Chemistry

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@article{dd57d21a94e842739bd143603e244669,

title = "Surface defect site density on single walled carbon nanotubes by titration",

abstract = "Closed end single walled carbon nanotubes (c-SWNT) purified by acidic oxidation have been studied in order to determine the fraction of oxidized carbon sites present. This has been done by measuring the evolution of CO2(g) and CO(g) on heating to 1273 K. Following a 1273 K treatment, the defect sites were titrated repeatedly with O3. The results indicate that \textasciitilde{}5\% of the carbon atoms in the c-SWNT samples pretreated to 1273 K are located at defective sites, capable of facile oxidation by O3. This high defect site density indicates that a significant number of these sites exist on the graphene walls of the nanotubes.",

author = "Mawhinney, \{Douglas B.\} and Viktor Naumenko and Anya Kuznetsova and Yates, \{John T.\} and J. Liu and Smalley, \{R. E.\}",

year = "2000",

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doi = "10.1016/S0009-2614(00)00526-1",

language = "English",

volume = "324",

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journal = "Chemical Physics Letters",

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TY - JOUR

T1 - Surface defect site density on single walled carbon nanotubes by titration

AU - Mawhinney, Douglas B.

AU - Naumenko, Viktor

AU - Kuznetsova, Anya

AU - Yates, John T.

AU - Liu, J.

AU - Smalley, R. E.

PY - 2000/6/30

Y1 - 2000/6/30

N2 - Closed end single walled carbon nanotubes (c-SWNT) purified by acidic oxidation have been studied in order to determine the fraction of oxidized carbon sites present. This has been done by measuring the evolution of CO2(g) and CO(g) on heating to 1273 K. Following a 1273 K treatment, the defect sites were titrated repeatedly with O3. The results indicate that ~5% of the carbon atoms in the c-SWNT samples pretreated to 1273 K are located at defective sites, capable of facile oxidation by O3. This high defect site density indicates that a significant number of these sites exist on the graphene walls of the nanotubes.

AB - Closed end single walled carbon nanotubes (c-SWNT) purified by acidic oxidation have been studied in order to determine the fraction of oxidized carbon sites present. This has been done by measuring the evolution of CO2(g) and CO(g) on heating to 1273 K. Following a 1273 K treatment, the defect sites were titrated repeatedly with O3. The results indicate that ~5% of the carbon atoms in the c-SWNT samples pretreated to 1273 K are located at defective sites, capable of facile oxidation by O3. This high defect site density indicates that a significant number of these sites exist on the graphene walls of the nanotubes.

UR - https://www.scopus.com/pages/publications/0000866346

U2 - 10.1016/S0009-2614(00)00526-1

DO - 10.1016/S0009-2614(00)00526-1

M3 - Article

AN - SCOPUS:0000866346

SN - 0009-2614

VL - 324

SP - 213

EP - 216

JO - Chemical Physics Letters

JF - Chemical Physics Letters

IS - 1-3

ER -

Surface defect site density on single walled carbon nanotubes by titration

Abstract

ASJC Scopus subject areas

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