A sensitive nonenzymatic hydrogen peroxide sensor using cadmium oxide nanoparticles/multiwall carbon nanotube modified glassy carbon electrode

Nutthaya Butwong; Lin Zhou; Wittaya Ng-Eontae; Rodjana Burakham; Eric Moore; Supalax Srijaranai; John H.T. Luong; Jeremy D. Glennon

doi:10.1016/j.jelechem.2013.12.028

A sensitive nonenzymatic hydrogen peroxide sensor using cadmium oxide nanoparticles/multiwall carbon nanotube modified glassy carbon electrode

Nutthaya Butwong
, Lin Zhou
, Wittaya Ng-Eontae
, Rodjana Burakham
, Eric Moore
, Supalax Srijaranai
, John H.T. Luong
, Jeremy D. Glennon

School of Chemistry

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

Abstract

A simple sensing scheme for hydrogen peroxide has been described by electrochemical deposition of cadmium oxide (CdO) nanoparticles with ∼50 nm in diameter on a glassy carbon (GC) electrode modified with multiwall carbon nanotubes (MWCNT). The CdO/MWCNT modified sensor, with a surface coverage of 1.13 × 10^-8 mol/cm², displayed high synergistic electrocatalytic activity for H₂O₂. The sensor was capable of reducing H₂O₂ at -1.2 V vs. Ag/AgCl (H ₂O₂ + 2H⁺ + 2e^- → 2H ₂O) in a broad pH range. At the optimal pH 7, the sensor exhibited a detection limit of 0.1 μM, broad linearity from 0.5 to 200 μM, good reproducibility (RSD of 5.9%), and long-term stability. Uric acid, ascorbic acid and dopamine up to 100 μM provoked no signal response, attesting selectivity of the CdO/MWCNT modified electrode for hydrogen peroxide.

Original language	English
Pages (from-to)	41-46
Number of pages	6
Journal	Journal of Electroanalytical Chemistry
Volume	717-718
DOIs	https://doi.org/10.1016/j.jelechem.2013.12.028
Publication status	Published - 15 Mar 2014

Keywords

Cadmium oxide
Glassy carbon electrode
Hydrogen peroxide
Multiwall carbon nanotube

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10.1016/j.jelechem.2013.12.028

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title = "A sensitive nonenzymatic hydrogen peroxide sensor using cadmium oxide nanoparticles/multiwall carbon nanotube modified glassy carbon electrode",

abstract = "A simple sensing scheme for hydrogen peroxide has been described by electrochemical deposition of cadmium oxide (CdO) nanoparticles with ∼50 nm in diameter on a glassy carbon (GC) electrode modified with multiwall carbon nanotubes (MWCNT). The CdO/MWCNT modified sensor, with a surface coverage of 1.13 × 10-8 mol/cm2, displayed high synergistic electrocatalytic activity for H2O2. The sensor was capable of reducing H2O2 at -1.2 V vs. Ag/AgCl (H 2O2 + 2H+ + 2e- → 2H 2O) in a broad pH range. At the optimal pH 7, the sensor exhibited a detection limit of 0.1 μM, broad linearity from 0.5 to 200 μM, good reproducibility (RSD of 5.9\%), and long-term stability. Uric acid, ascorbic acid and dopamine up to 100 μM provoked no signal response, attesting selectivity of the CdO/MWCNT modified electrode for hydrogen peroxide.",

keywords = "Cadmium oxide, Glassy carbon electrode, Hydrogen peroxide, Multiwall carbon nanotube",

author = "Nutthaya Butwong and Lin Zhou and Wittaya Ng-Eontae and Rodjana Burakham and Eric Moore and Supalax Srijaranai and Luong, \{John H.T.\} and Glennon, \{Jeremy D.\}",

year = "2014",

month = mar,

day = "15",

doi = "10.1016/j.jelechem.2013.12.028",

language = "English",

volume = "717-718",

pages = "41--46",

journal = "Journal of Electroanalytical Chemistry",

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T1 - A sensitive nonenzymatic hydrogen peroxide sensor using cadmium oxide nanoparticles/multiwall carbon nanotube modified glassy carbon electrode

AU - Butwong, Nutthaya

AU - Zhou, Lin

AU - Ng-Eontae, Wittaya

AU - Burakham, Rodjana

AU - Moore, Eric

AU - Srijaranai, Supalax

AU - Luong, John H.T.

AU - Glennon, Jeremy D.

PY - 2014/3/15

Y1 - 2014/3/15

N2 - A simple sensing scheme for hydrogen peroxide has been described by electrochemical deposition of cadmium oxide (CdO) nanoparticles with ∼50 nm in diameter on a glassy carbon (GC) electrode modified with multiwall carbon nanotubes (MWCNT). The CdO/MWCNT modified sensor, with a surface coverage of 1.13 × 10-8 mol/cm2, displayed high synergistic electrocatalytic activity for H2O2. The sensor was capable of reducing H2O2 at -1.2 V vs. Ag/AgCl (H 2O2 + 2H+ + 2e- → 2H 2O) in a broad pH range. At the optimal pH 7, the sensor exhibited a detection limit of 0.1 μM, broad linearity from 0.5 to 200 μM, good reproducibility (RSD of 5.9%), and long-term stability. Uric acid, ascorbic acid and dopamine up to 100 μM provoked no signal response, attesting selectivity of the CdO/MWCNT modified electrode for hydrogen peroxide.

AB - A simple sensing scheme for hydrogen peroxide has been described by electrochemical deposition of cadmium oxide (CdO) nanoparticles with ∼50 nm in diameter on a glassy carbon (GC) electrode modified with multiwall carbon nanotubes (MWCNT). The CdO/MWCNT modified sensor, with a surface coverage of 1.13 × 10-8 mol/cm2, displayed high synergistic electrocatalytic activity for H2O2. The sensor was capable of reducing H2O2 at -1.2 V vs. Ag/AgCl (H 2O2 + 2H+ + 2e- → 2H 2O) in a broad pH range. At the optimal pH 7, the sensor exhibited a detection limit of 0.1 μM, broad linearity from 0.5 to 200 μM, good reproducibility (RSD of 5.9%), and long-term stability. Uric acid, ascorbic acid and dopamine up to 100 μM provoked no signal response, attesting selectivity of the CdO/MWCNT modified electrode for hydrogen peroxide.

KW - Cadmium oxide

KW - Glassy carbon electrode

KW - Hydrogen peroxide

KW - Multiwall carbon nanotube

UR - https://www.scopus.com/pages/publications/84893350410

U2 - 10.1016/j.jelechem.2013.12.028

DO - 10.1016/j.jelechem.2013.12.028

M3 - Article

AN - SCOPUS:84893350410

SN - 1572-6657

VL - 717-718

SP - 41

EP - 46

JO - Journal of Electroanalytical Chemistry

JF - Journal of Electroanalytical Chemistry

ER -

A sensitive nonenzymatic hydrogen peroxide sensor using cadmium oxide nanoparticles/multiwall carbon nanotube modified glassy carbon electrode

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Keywords

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