Effect of solution pH and ionic strength on the stability of poly(acrylic acid)-encapsulated multiwalled carbon nanotubes aqueous dispersion and its application for NADH sensor

Aihua Liu; Takashi Watanabe; Itaru Honma; Jin Wang; Haoshen Zhou

doi:10.1016/j.bios.2006.02.006

Effect of solution pH and ionic strength on the stability of poly(acrylic acid)-encapsulated multiwalled carbon nanotubes aqueous dispersion and its application for NADH sensor

Aihua Liu, Takashi Watanabe, Itaru Honma, Jin Wang, Haoshen Zhou

IMRAM - Center for Mineral Processing and Metallurgy (CMPM)

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

66 Citations (Scopus)

Abstract

The optimal conditions to prepare water-soluble, stable poly(acrylic acid)-wrapped multiwalled carbon nanotubes (PAA-MWNTs) complex is presented. PAA-MWNTs shows high stability within weak acid to weak basic pH condition. The complex also shows good endurance to moderate ionic strengths in the buffer solution. The PAA-MWNTs complex film-covered electrode demonstrates stable, excellent electrocatalytic activity to oxidize NADH, which makes it possible to prepare NADH sensor at a low potential of ∼0.13 V (versus Ag/AgCl) with the linear range of 4-100 μM by differential pulse voltammetry.

Original language	English
Pages (from-to)	694-699
Number of pages	6
Journal	Biosensors and Bioelectronics
Volume	22
Issue number	5
DOIs	https://doi.org/10.1016/j.bios.2006.02.006
Publication status	Published - 2006 Dec 15

Keywords

Differential pulse voltammetry
Ionic strength
NADH sensor
Poly(acrylic acid)-multiwalled carbon nanotube complex
Solubilization of multiwalled carbon nanotubes
Solution pH

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10.1016/j.bios.2006.02.006

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title = "Effect of solution pH and ionic strength on the stability of poly(acrylic acid)-encapsulated multiwalled carbon nanotubes aqueous dispersion and its application for NADH sensor",

abstract = "The optimal conditions to prepare water-soluble, stable poly(acrylic acid)-wrapped multiwalled carbon nanotubes (PAA-MWNTs) complex is presented. PAA-MWNTs shows high stability within weak acid to weak basic pH condition. The complex also shows good endurance to moderate ionic strengths in the buffer solution. The PAA-MWNTs complex film-covered electrode demonstrates stable, excellent electrocatalytic activity to oxidize NADH, which makes it possible to prepare NADH sensor at a low potential of ∼0.13 V (versus Ag/AgCl) with the linear range of 4-100 μM by differential pulse voltammetry.",

keywords = "Differential pulse voltammetry, Ionic strength, NADH sensor, Poly(acrylic acid)-multiwalled carbon nanotube complex, Solubilization of multiwalled carbon nanotubes, Solution pH",

author = "Aihua Liu and Takashi Watanabe and Itaru Honma and Jin Wang and Haoshen Zhou",

note = "Funding Information: A. Liu would like to thank the Japan Society for the Promotion of Science (JSPS) for the financial support of this work.",

year = "2006",

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doi = "10.1016/j.bios.2006.02.006",

language = "English",

volume = "22",

pages = "694--699",

journal = "Biosensors and Bioelectronics",

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Effect of solution pH and ionic strength on the stability of poly(acrylic acid)-encapsulated multiwalled carbon nanotubes aqueous dispersion and its application for NADH sensor. / Liu, Aihua; Watanabe, Takashi; Honma, Itaru et al.
In: Biosensors and Bioelectronics, Vol. 22, No. 5, 15.12.2006, p. 694-699.

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

TY - JOUR

T1 - Effect of solution pH and ionic strength on the stability of poly(acrylic acid)-encapsulated multiwalled carbon nanotubes aqueous dispersion and its application for NADH sensor

AU - Liu, Aihua

AU - Watanabe, Takashi

AU - Honma, Itaru

AU - Wang, Jin

AU - Zhou, Haoshen

N1 - Funding Information: A. Liu would like to thank the Japan Society for the Promotion of Science (JSPS) for the financial support of this work.

PY - 2006/12/15

Y1 - 2006/12/15

N2 - The optimal conditions to prepare water-soluble, stable poly(acrylic acid)-wrapped multiwalled carbon nanotubes (PAA-MWNTs) complex is presented. PAA-MWNTs shows high stability within weak acid to weak basic pH condition. The complex also shows good endurance to moderate ionic strengths in the buffer solution. The PAA-MWNTs complex film-covered electrode demonstrates stable, excellent electrocatalytic activity to oxidize NADH, which makes it possible to prepare NADH sensor at a low potential of ∼0.13 V (versus Ag/AgCl) with the linear range of 4-100 μM by differential pulse voltammetry.

AB - The optimal conditions to prepare water-soluble, stable poly(acrylic acid)-wrapped multiwalled carbon nanotubes (PAA-MWNTs) complex is presented. PAA-MWNTs shows high stability within weak acid to weak basic pH condition. The complex also shows good endurance to moderate ionic strengths in the buffer solution. The PAA-MWNTs complex film-covered electrode demonstrates stable, excellent electrocatalytic activity to oxidize NADH, which makes it possible to prepare NADH sensor at a low potential of ∼0.13 V (versus Ag/AgCl) with the linear range of 4-100 μM by differential pulse voltammetry.

KW - Differential pulse voltammetry

KW - Ionic strength

KW - NADH sensor

KW - Poly(acrylic acid)-multiwalled carbon nanotube complex

KW - Solubilization of multiwalled carbon nanotubes

KW - Solution pH

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Effect of solution pH and ionic strength on the stability of poly(acrylic acid)-encapsulated multiwalled carbon nanotubes aqueous dispersion and its application for NADH sensor

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Keywords

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