A comparative study of electrochemical and biointerfacial properties of acid- and plasma-treated single-walled carbon-nanotube-film electrode systems for use in biosensors

Joon Hyub Kim, Min Jung Song, Cheol Jin Lee, Jae Hyeok Lee, Jae Ho Kim, Nam Ki Min

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

The electrocatalytic and biointerfacial properties of acid- and O 2-plasma-treated single-walled carbon nanotube (SWCNT) electrodes were investigated. The SWCNT-modified electrodes were characterized using scanning electron microscopy and X-ray photoelectron spectroscopy. The electrochemical performance of these electrodes was analyzed by cyclic voltammetry and chronoamperometry. Glucose oxidase was covalently immobilized on the surface of the treated SWCNTs, and the analytical characteristics of the integrated glucose sensor were investigated using glucose as a target analyte. The plasma-activated SWCNT electrode exhibited a much higher sensitivity to the glucose and a lower detection limit than the acid-treated electrode, indicating that a larger amount of enzyme was immobilized on the plasma-treated SWCNT electrode than on the acid-treated electrode. This is due to the fact that the oxygenated functional groups are mainly located at the ends of the tubes in the acid-treated SWCNTs, while the plasma-treated SWCNTs have an even larger surface area available for enzyme immobilization owing to the functional groups covering the entire surface of the SWCNTs.

Original languageEnglish
Pages (from-to)398-407
Number of pages10
JournalCarbon
Volume52
DOIs
Publication statusPublished - 2013 Feb 1

Fingerprint

Single-walled carbon nanotubes (SWCN)
Biosensors
Plasmas
Electrodes
Acids
Functional groups
Enzyme immobilization
Glucose sensors
Glucose
Glucose Oxidase
Chronoamperometry
Cyclic voltammetry
X ray photoelectron spectroscopy
Scanning electron microscopy
Enzymes

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

A comparative study of electrochemical and biointerfacial properties of acid- and plasma-treated single-walled carbon-nanotube-film electrode systems for use in biosensors. / Kim, Joon Hyub; Song, Min Jung; Lee, Cheol Jin; Lee, Jae Hyeok; Kim, Jae Ho; Min, Nam Ki.

In: Carbon, Vol. 52, 01.02.2013, p. 398-407.

Research output: Contribution to journalArticle

@article{e68fda1128434367be29961c035038d9,
title = "A comparative study of electrochemical and biointerfacial properties of acid- and plasma-treated single-walled carbon-nanotube-film electrode systems for use in biosensors",
abstract = "The electrocatalytic and biointerfacial properties of acid- and O 2-plasma-treated single-walled carbon nanotube (SWCNT) electrodes were investigated. The SWCNT-modified electrodes were characterized using scanning electron microscopy and X-ray photoelectron spectroscopy. The electrochemical performance of these electrodes was analyzed by cyclic voltammetry and chronoamperometry. Glucose oxidase was covalently immobilized on the surface of the treated SWCNTs, and the analytical characteristics of the integrated glucose sensor were investigated using glucose as a target analyte. The plasma-activated SWCNT electrode exhibited a much higher sensitivity to the glucose and a lower detection limit than the acid-treated electrode, indicating that a larger amount of enzyme was immobilized on the plasma-treated SWCNT electrode than on the acid-treated electrode. This is due to the fact that the oxygenated functional groups are mainly located at the ends of the tubes in the acid-treated SWCNTs, while the plasma-treated SWCNTs have an even larger surface area available for enzyme immobilization owing to the functional groups covering the entire surface of the SWCNTs.",
author = "Kim, {Joon Hyub} and Song, {Min Jung} and Lee, {Cheol Jin} and Lee, {Jae Hyeok} and Kim, {Jae Ho} and Min, {Nam Ki}",
year = "2013",
month = "2",
day = "1",
doi = "10.1016/j.carbon.2012.09.050",
language = "English",
volume = "52",
pages = "398--407",
journal = "Carbon",
issn = "0008-6223",
publisher = "Elsevier Limited",

}

TY - JOUR

T1 - A comparative study of electrochemical and biointerfacial properties of acid- and plasma-treated single-walled carbon-nanotube-film electrode systems for use in biosensors

AU - Kim, Joon Hyub

AU - Song, Min Jung

AU - Lee, Cheol Jin

AU - Lee, Jae Hyeok

AU - Kim, Jae Ho

AU - Min, Nam Ki

PY - 2013/2/1

Y1 - 2013/2/1

N2 - The electrocatalytic and biointerfacial properties of acid- and O 2-plasma-treated single-walled carbon nanotube (SWCNT) electrodes were investigated. The SWCNT-modified electrodes were characterized using scanning electron microscopy and X-ray photoelectron spectroscopy. The electrochemical performance of these electrodes was analyzed by cyclic voltammetry and chronoamperometry. Glucose oxidase was covalently immobilized on the surface of the treated SWCNTs, and the analytical characteristics of the integrated glucose sensor were investigated using glucose as a target analyte. The plasma-activated SWCNT electrode exhibited a much higher sensitivity to the glucose and a lower detection limit than the acid-treated electrode, indicating that a larger amount of enzyme was immobilized on the plasma-treated SWCNT electrode than on the acid-treated electrode. This is due to the fact that the oxygenated functional groups are mainly located at the ends of the tubes in the acid-treated SWCNTs, while the plasma-treated SWCNTs have an even larger surface area available for enzyme immobilization owing to the functional groups covering the entire surface of the SWCNTs.

AB - The electrocatalytic and biointerfacial properties of acid- and O 2-plasma-treated single-walled carbon nanotube (SWCNT) electrodes were investigated. The SWCNT-modified electrodes were characterized using scanning electron microscopy and X-ray photoelectron spectroscopy. The electrochemical performance of these electrodes was analyzed by cyclic voltammetry and chronoamperometry. Glucose oxidase was covalently immobilized on the surface of the treated SWCNTs, and the analytical characteristics of the integrated glucose sensor were investigated using glucose as a target analyte. The plasma-activated SWCNT electrode exhibited a much higher sensitivity to the glucose and a lower detection limit than the acid-treated electrode, indicating that a larger amount of enzyme was immobilized on the plasma-treated SWCNT electrode than on the acid-treated electrode. This is due to the fact that the oxygenated functional groups are mainly located at the ends of the tubes in the acid-treated SWCNTs, while the plasma-treated SWCNTs have an even larger surface area available for enzyme immobilization owing to the functional groups covering the entire surface of the SWCNTs.

UR - http://www.scopus.com/inward/record.url?scp=84869503169&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84869503169&partnerID=8YFLogxK

U2 - 10.1016/j.carbon.2012.09.050

DO - 10.1016/j.carbon.2012.09.050

M3 - Article

AN - SCOPUS:84869503169

VL - 52

SP - 398

EP - 407

JO - Carbon

JF - Carbon

SN - 0008-6223

ER -