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A glassy carbon electrode modified with MoS2 nanosheets and poly(3,4-ethylenedioxythiophene) for simultaneous electrochemical detection of ascorbic acid, dopamine and uric acid

We describe a chemical exfoliation method for the preparation of MoS 2 nanosheets. The nanosheets were incorporated into poly(3,4-ethylenedioxythiophene) (PEDOT) by electrodeposition on a glassy carbon electrode (GCE) to form a nanocomposite. The modified GCE is shown to enable simultaneous determin... Full description

Journal Title: Mikrochimica acta (1966) 2016-07-02, Vol.183 (9), p.2517-2523
Main Author: Li, Ying
Other Authors: Lin, Hechun , Peng, Hui , Qi, Ruijuan , Luo, Chunhua
Format: Electronic Article Electronic Article
Language: English
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Publisher: Vienna: Springer Vienna
ID: ISSN: 0026-3672
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title: A glassy carbon electrode modified with MoS2 nanosheets and poly(3,4-ethylenedioxythiophene) for simultaneous electrochemical detection of ascorbic acid, dopamine and uric acid
format: Article
creator:
  • Li, Ying
  • Lin, Hechun
  • Peng, Hui
  • Qi, Ruijuan
  • Luo, Chunhua
subjects:
  • Analytical Chemistry
  • Ascorbic acid
  • Characterization and Evaluation of Materials
  • Chemistry
  • Chemistry and Materials Science
  • Dopamine
  • Electrochemical analysis
  • Electrodes
  • Glassy carbon
  • Microengineering
  • Molybdenum disulfide
  • Nanochemistry
  • Nanocomposites
  • Nanostructure
  • Nanotechnology
  • Original Paper
  • Oxidation
  • Synergistic effect
  • Uric acid
  • Urine
  • Vitamin C
  • Voltammetry
ispartof: Mikrochimica acta (1966), 2016-07-02, Vol.183 (9), p.2517-2523
description: We describe a chemical exfoliation method for the preparation of MoS 2 nanosheets. The nanosheets were incorporated into poly(3,4-ethylenedioxythiophene) (PEDOT) by electrodeposition on a glassy carbon electrode (GCE) to form a nanocomposite. The modified GCE is shown to enable simultaneous determination of ascorbic acid (AA), dopamine (DA) and uric acid (UA). Due to the synergistic effect of MoS 2 and PEDOT, this electrode displays better properties in terms of electrocatalytic oxidation of AA, DA and UA than pure PEDOT, which is illustrated by cyclic voltammetry and differential pulse voltammetry (DPV). Under optimum conditions and at pH 7.4, the respective sensitivities and best working potentials are as follows: AA: 1.20 A∙mM −1 ∙m −2 , 30 mV; DA: 36.40 A∙mM −1 ∙m −2 , 210 mV; UA: 105.17 A∙mM −1 ∙m −2 , 350 mV. The calculated detection limits for AA, DA and UA are 5.83 μM, 0.52 μM and 0.95 μM, respectively. The modified electrode was applied to the detection of the three species in human urine samples and gave satisfactory results. Graphical abstract MoS 2 nanosheets were prepared by a facile chemical exfoliation method. MoS 2 and poly(3,4-ethylenedioxythiophene) nanocomposite modified glassy carbon electrodes were fabricated, which are shown to enable simultaneous determination of ascorbic acid, dopamine and uric acid with high sensitivity and selectivity.
language: eng
source:
identifier: ISSN: 0026-3672
fulltext: no_fulltext
issn:
  • 0026-3672
  • 1436-5073
url: Link


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titleA glassy carbon electrode modified with MoS2 nanosheets and poly(3,4-ethylenedioxythiophene) for simultaneous electrochemical detection of ascorbic acid, dopamine and uric acid
creatorLi, Ying ; Lin, Hechun ; Peng, Hui ; Qi, Ruijuan ; Luo, Chunhua
creatorcontribLi, Ying ; Lin, Hechun ; Peng, Hui ; Qi, Ruijuan ; Luo, Chunhua
descriptionWe describe a chemical exfoliation method for the preparation of MoS 2 nanosheets. The nanosheets were incorporated into poly(3,4-ethylenedioxythiophene) (PEDOT) by electrodeposition on a glassy carbon electrode (GCE) to form a nanocomposite. The modified GCE is shown to enable simultaneous determination of ascorbic acid (AA), dopamine (DA) and uric acid (UA). Due to the synergistic effect of MoS 2 and PEDOT, this electrode displays better properties in terms of electrocatalytic oxidation of AA, DA and UA than pure PEDOT, which is illustrated by cyclic voltammetry and differential pulse voltammetry (DPV). Under optimum conditions and at pH 7.4, the respective sensitivities and best working potentials are as follows: AA: 1.20 A∙mM −1 ∙m −2 , 30 mV; DA: 36.40 A∙mM −1 ∙m −2 , 210 mV; UA: 105.17 A∙mM −1 ∙m −2 , 350 mV. The calculated detection limits for AA, DA and UA are 5.83 μM, 0.52 μM and 0.95 μM, respectively. The modified electrode was applied to the detection of the three species in human urine samples and gave satisfactory results. Graphical abstract MoS 2 nanosheets were prepared by a facile chemical exfoliation method. MoS 2 and poly(3,4-ethylenedioxythiophene) nanocomposite modified glassy carbon electrodes were fabricated, which are shown to enable simultaneous determination of ascorbic acid, dopamine and uric acid with high sensitivity and selectivity.
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subjectAnalytical Chemistry ; Ascorbic acid ; Characterization and Evaluation of Materials ; Chemistry ; Chemistry and Materials Science ; Dopamine ; Electrochemical analysis ; Electrodes ; Glassy carbon ; Microengineering ; Molybdenum disulfide ; Nanochemistry ; Nanocomposites ; Nanostructure ; Nanotechnology ; Original Paper ; Oxidation ; Synergistic effect ; Uric acid ; Urine ; Vitamin C ; Voltammetry
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descriptionWe describe a chemical exfoliation method for the preparation of MoS 2 nanosheets. The nanosheets were incorporated into poly(3,4-ethylenedioxythiophene) (PEDOT) by electrodeposition on a glassy carbon electrode (GCE) to form a nanocomposite. The modified GCE is shown to enable simultaneous determination of ascorbic acid (AA), dopamine (DA) and uric acid (UA). Due to the synergistic effect of MoS 2 and PEDOT, this electrode displays better properties in terms of electrocatalytic oxidation of AA, DA and UA than pure PEDOT, which is illustrated by cyclic voltammetry and differential pulse voltammetry (DPV). Under optimum conditions and at pH 7.4, the respective sensitivities and best working potentials are as follows: AA: 1.20 A∙mM −1 ∙m −2 , 30 mV; DA: 36.40 A∙mM −1 ∙m −2 , 210 mV; UA: 105.17 A∙mM −1 ∙m −2 , 350 mV. The calculated detection limits for AA, DA and UA are 5.83 μM, 0.52 μM and 0.95 μM, respectively. The modified electrode was applied to the detection of the three species in human urine samples and gave satisfactory results. Graphical abstract MoS 2 nanosheets were prepared by a facile chemical exfoliation method. MoS 2 and poly(3,4-ethylenedioxythiophene) nanocomposite modified glassy carbon electrodes were fabricated, which are shown to enable simultaneous determination of ascorbic acid, dopamine and uric acid with high sensitivity and selectivity.
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9Microengineering
10Molybdenum disulfide
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titleA glassy carbon electrode modified with MoS2 nanosheets and poly(3,4-ethylenedioxythiophene) for simultaneous electrochemical detection of ascorbic acid, dopamine and uric acid
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atitleA glassy carbon electrode modified with MoS2 nanosheets and poly(3,4-ethylenedioxythiophene) for simultaneous electrochemical detection of ascorbic acid, dopamine and uric acid
jtitleMikrochimica acta (1966)
stitleMicrochim Acta
date2016-07-02
risdate2016
volume183
issue9
spage2517
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pages2517-2523
issn0026-3672
eissn1436-5073
abstractWe describe a chemical exfoliation method for the preparation of MoS 2 nanosheets. The nanosheets were incorporated into poly(3,4-ethylenedioxythiophene) (PEDOT) by electrodeposition on a glassy carbon electrode (GCE) to form a nanocomposite. The modified GCE is shown to enable simultaneous determination of ascorbic acid (AA), dopamine (DA) and uric acid (UA). Due to the synergistic effect of MoS 2 and PEDOT, this electrode displays better properties in terms of electrocatalytic oxidation of AA, DA and UA than pure PEDOT, which is illustrated by cyclic voltammetry and differential pulse voltammetry (DPV). Under optimum conditions and at pH 7.4, the respective sensitivities and best working potentials are as follows: AA: 1.20 A∙mM −1 ∙m −2 , 30 mV; DA: 36.40 A∙mM −1 ∙m −2 , 210 mV; UA: 105.17 A∙mM −1 ∙m −2 , 350 mV. The calculated detection limits for AA, DA and UA are 5.83 μM, 0.52 μM and 0.95 μM, respectively. The modified electrode was applied to the detection of the three species in human urine samples and gave satisfactory results. Graphical abstract MoS 2 nanosheets were prepared by a facile chemical exfoliation method. MoS 2 and poly(3,4-ethylenedioxythiophene) nanocomposite modified glassy carbon electrodes were fabricated, which are shown to enable simultaneous determination of ascorbic acid, dopamine and uric acid with high sensitivity and selectivity.
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pubSpringer Vienna
doi10.1007/s00604-016-1897-1