Toward tailored functional design of multi-walled carbon nanotubes (MWNTs)

Electrochemical and antimicrobial activity enhancement via oxidation and selective reduction

Leanne M. Gilbertson, David G. Goodwin, Andre Taylor, Lisa Pfefferle, Julie B. Zimmerman

Research output: Contribution to journalArticle

Abstract

Multiwalled carbon nanotubes (MWNTs) are utilized in a number of sectors as a result of their favorable electronic properties. In addition, MWNT antimicrobial properties can be exploited or considered a potential liability depending on their intended application and handling. The ability to tailor electrochemical and antimicrobial properties using economical and conventional treatment processes introduces the potential to significantly enhance product performance. Oxygen functional groups are known to influence several MWNT properties, including redox activity. Here, MWNTs were functionalized with oxygen groups using standard acid treatments followed by selective reduction via annealing. Chemical derivatization coupled to X-ray photoelectron spectroscopy was utilized to quantify specific surface oxygen group concentration after variable treatment conditions, which were then correlated to observed trends in electrochemical and antimicrobial activities. These activities were evaluated as the potential for MWNTs to participate in the oxygen reduction reaction and to have the ability to promote the oxidation of glutathione. The compiled results strongly suggest that the reduction of surface carboxyl groups and the redox activity of carbonyl groups promote enhanced MWNT reactivity and elucidate the opportunity to design functional MWNTs for enhanced performance in their intended electrochemical or antimicrobial application.

Original languageEnglish (US)
Pages (from-to)5938-5945
Number of pages8
JournalEnvironmental Science and Technology
Volume48
Issue number10
DOIs
StatePublished - May 20 2014

Fingerprint

Carbon Nanotubes
antimicrobial activity
Thermodynamic properties
oxidation
Oxidation
Oxygen
oxygen
Multiwalled carbon nanotubes (MWCN)
Electronic properties
Functional groups
annealing
Glutathione
liability
carbon nanotube
X-ray spectroscopy
functional group
X ray photoelectron spectroscopy
Annealing
Acids
acid

ASJC Scopus subject areas

  • Chemistry(all)
  • Environmental Chemistry

Cite this

Toward tailored functional design of multi-walled carbon nanotubes (MWNTs) : Electrochemical and antimicrobial activity enhancement via oxidation and selective reduction. / Gilbertson, Leanne M.; Goodwin, David G.; Taylor, Andre; Pfefferle, Lisa; Zimmerman, Julie B.

In: Environmental Science and Technology, Vol. 48, No. 10, 20.05.2014, p. 5938-5945.

Research output: Contribution to journalArticle

Gilbertson, Leanne M. ; Goodwin, David G. ; Taylor, Andre ; Pfefferle, Lisa ; Zimmerman, Julie B. / Toward tailored functional design of multi-walled carbon nanotubes (MWNTs) : Electrochemical and antimicrobial activity enhancement via oxidation and selective reduction. In: Environmental Science and Technology. 2014 ; Vol. 48, No. 10. pp. 5938-5945.
@article{4732f653032a4f009fc22f4b2394a7d5,
title = "Toward tailored functional design of multi-walled carbon nanotubes (MWNTs): Electrochemical and antimicrobial activity enhancement via oxidation and selective reduction",
abstract = "Multiwalled carbon nanotubes (MWNTs) are utilized in a number of sectors as a result of their favorable electronic properties. In addition, MWNT antimicrobial properties can be exploited or considered a potential liability depending on their intended application and handling. The ability to tailor electrochemical and antimicrobial properties using economical and conventional treatment processes introduces the potential to significantly enhance product performance. Oxygen functional groups are known to influence several MWNT properties, including redox activity. Here, MWNTs were functionalized with oxygen groups using standard acid treatments followed by selective reduction via annealing. Chemical derivatization coupled to X-ray photoelectron spectroscopy was utilized to quantify specific surface oxygen group concentration after variable treatment conditions, which were then correlated to observed trends in electrochemical and antimicrobial activities. These activities were evaluated as the potential for MWNTs to participate in the oxygen reduction reaction and to have the ability to promote the oxidation of glutathione. The compiled results strongly suggest that the reduction of surface carboxyl groups and the redox activity of carbonyl groups promote enhanced MWNT reactivity and elucidate the opportunity to design functional MWNTs for enhanced performance in their intended electrochemical or antimicrobial application.",
author = "Gilbertson, {Leanne M.} and Goodwin, {David G.} and Andre Taylor and Lisa Pfefferle and Zimmerman, {Julie B.}",
year = "2014",
month = "5",
day = "20",
doi = "10.1021/es500468y",
language = "English (US)",
volume = "48",
pages = "5938--5945",
journal = "Environmental Science & Technology",
issn = "0013-936X",
publisher = "American Chemical Society",
number = "10",

}

TY - JOUR

T1 - Toward tailored functional design of multi-walled carbon nanotubes (MWNTs)

T2 - Electrochemical and antimicrobial activity enhancement via oxidation and selective reduction

AU - Gilbertson, Leanne M.

AU - Goodwin, David G.

AU - Taylor, Andre

AU - Pfefferle, Lisa

AU - Zimmerman, Julie B.

PY - 2014/5/20

Y1 - 2014/5/20

N2 - Multiwalled carbon nanotubes (MWNTs) are utilized in a number of sectors as a result of their favorable electronic properties. In addition, MWNT antimicrobial properties can be exploited or considered a potential liability depending on their intended application and handling. The ability to tailor electrochemical and antimicrobial properties using economical and conventional treatment processes introduces the potential to significantly enhance product performance. Oxygen functional groups are known to influence several MWNT properties, including redox activity. Here, MWNTs were functionalized with oxygen groups using standard acid treatments followed by selective reduction via annealing. Chemical derivatization coupled to X-ray photoelectron spectroscopy was utilized to quantify specific surface oxygen group concentration after variable treatment conditions, which were then correlated to observed trends in electrochemical and antimicrobial activities. These activities were evaluated as the potential for MWNTs to participate in the oxygen reduction reaction and to have the ability to promote the oxidation of glutathione. The compiled results strongly suggest that the reduction of surface carboxyl groups and the redox activity of carbonyl groups promote enhanced MWNT reactivity and elucidate the opportunity to design functional MWNTs for enhanced performance in their intended electrochemical or antimicrobial application.

AB - Multiwalled carbon nanotubes (MWNTs) are utilized in a number of sectors as a result of their favorable electronic properties. In addition, MWNT antimicrobial properties can be exploited or considered a potential liability depending on their intended application and handling. The ability to tailor electrochemical and antimicrobial properties using economical and conventional treatment processes introduces the potential to significantly enhance product performance. Oxygen functional groups are known to influence several MWNT properties, including redox activity. Here, MWNTs were functionalized with oxygen groups using standard acid treatments followed by selective reduction via annealing. Chemical derivatization coupled to X-ray photoelectron spectroscopy was utilized to quantify specific surface oxygen group concentration after variable treatment conditions, which were then correlated to observed trends in electrochemical and antimicrobial activities. These activities were evaluated as the potential for MWNTs to participate in the oxygen reduction reaction and to have the ability to promote the oxidation of glutathione. The compiled results strongly suggest that the reduction of surface carboxyl groups and the redox activity of carbonyl groups promote enhanced MWNT reactivity and elucidate the opportunity to design functional MWNTs for enhanced performance in their intended electrochemical or antimicrobial application.

UR - http://www.scopus.com/inward/record.url?scp=84901008901&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84901008901&partnerID=8YFLogxK

U2 - 10.1021/es500468y

DO - 10.1021/es500468y

M3 - Article

VL - 48

SP - 5938

EP - 5945

JO - Environmental Science & Technology

JF - Environmental Science & Technology

SN - 0013-936X

IS - 10

ER -