Influence of the Electrode Material on the Electrochemical Behavior of Carbon Paste Electrodes Modified with Meldola Blue and Methylene Green Adsorbed on a Synthetic Zeolite

Delia Gligor; Izabella Craciunescu; Ionel Catalin Popescu; Lo Gorton

doi:10.1002/elan.200900408

Influence of the Electrode Material on the Electrochemical Behavior of Carbon Paste Electrodes Modified with Meldola Blue and Methylene Green Adsorbed on a Synthetic Zeolite

Delia Gligor, Izabella Craciunescu, Ionel Catalin Popescu, Lo Gorton

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

Abstract

Carbon paste electrodes modified with a phenoxazine derivative, Meldola blue, and a phenothiazine derivative, methylene green, both strongly adsorbed on a synthetic zeolite were investigated using either glassy carbon powder (Sigradur K, SK) or single-walled carbon nanotubes (SWCNT) as conductive electrode material. In the case of SWCNT based electrodes, the formal potential of both mediators was pH dependent, as expected for a redox process involving proton transfer. In contrast, the formal potential of both mediators of SK based modified electrodes was practically insensitive to pH. This behavior is discussed in terms of interactions existing in the heterogeneous system mediator-zeolite-electrode material.

Original language	English
Pages (from-to)	509-512
Journal	Electroanalysis
Volume	22
Issue number	5
DOIs	https://doi.org/10.1002/elan.200900408
Publication status	Published - 2010

Bibliographical note

The information about affiliations in this record was updated in December 2015.
The record was previously connected to the following departments: Analytical Chemistry (S/LTH) (011001004)

Subject classification (UKÄ)

Analytical Chemistry

Free keywords

Zeolites
Nanotubes
Phenothiazine
Phenoxazine
nanotubes
Carbon
Zeolite modified carbon paste electrodes
Glassy carbon powder

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10.1002/elan.200900408

Cite this

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title = "Influence of the Electrode Material on the Electrochemical Behavior of Carbon Paste Electrodes Modified with Meldola Blue and Methylene Green Adsorbed on a Synthetic Zeolite",

abstract = "Carbon paste electrodes modified with a phenoxazine derivative, Meldola blue, and a phenothiazine derivative, methylene green, both strongly adsorbed on a synthetic zeolite were investigated using either glassy carbon powder (Sigradur K, SK) or single-walled carbon nanotubes (SWCNT) as conductive electrode material. In the case of SWCNT based electrodes, the formal potential of both mediators was pH dependent, as expected for a redox process involving proton transfer. In contrast, the formal potential of both mediators of SK based modified electrodes was practically insensitive to pH. This behavior is discussed in terms of interactions existing in the heterogeneous system mediator-zeolite-electrode material.",

keywords = "Zeolites, Nanotubes, Phenothiazine, Phenoxazine, nanotubes, Carbon, Zeolite modified carbon paste electrodes, Glassy carbon powder",

author = "Delia Gligor and Izabella Craciunescu and Popescu, {Ionel Catalin} and Lo Gorton",

note = "The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Analytical Chemistry (S/LTH) (011001004)",

year = "2010",

doi = "10.1002/elan.200900408",

language = "English",

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pages = "509--512",

journal = "Electroanalysis",

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T1 - Influence of the Electrode Material on the Electrochemical Behavior of Carbon Paste Electrodes Modified with Meldola Blue and Methylene Green Adsorbed on a Synthetic Zeolite

AU - Gligor, Delia

AU - Craciunescu, Izabella

AU - Popescu, Ionel Catalin

AU - Gorton, Lo

N1 - The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Analytical Chemistry (S/LTH) (011001004)

PY - 2010

Y1 - 2010

N2 - Carbon paste electrodes modified with a phenoxazine derivative, Meldola blue, and a phenothiazine derivative, methylene green, both strongly adsorbed on a synthetic zeolite were investigated using either glassy carbon powder (Sigradur K, SK) or single-walled carbon nanotubes (SWCNT) as conductive electrode material. In the case of SWCNT based electrodes, the formal potential of both mediators was pH dependent, as expected for a redox process involving proton transfer. In contrast, the formal potential of both mediators of SK based modified electrodes was practically insensitive to pH. This behavior is discussed in terms of interactions existing in the heterogeneous system mediator-zeolite-electrode material.

AB - Carbon paste electrodes modified with a phenoxazine derivative, Meldola blue, and a phenothiazine derivative, methylene green, both strongly adsorbed on a synthetic zeolite were investigated using either glassy carbon powder (Sigradur K, SK) or single-walled carbon nanotubes (SWCNT) as conductive electrode material. In the case of SWCNT based electrodes, the formal potential of both mediators was pH dependent, as expected for a redox process involving proton transfer. In contrast, the formal potential of both mediators of SK based modified electrodes was practically insensitive to pH. This behavior is discussed in terms of interactions existing in the heterogeneous system mediator-zeolite-electrode material.

KW - Zeolites

KW - Nanotubes

KW - Phenothiazine

KW - Phenoxazine

KW - nanotubes

KW - Carbon

KW - Zeolite modified carbon paste electrodes

KW - Glassy carbon powder

U2 - 10.1002/elan.200900408

DO - 10.1002/elan.200900408

M3 - Article

SN - 1040-0397

VL - 22

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JO - Electroanalysis

JF - Electroanalysis

IS - 5

ER -

Influence of the Electrode Material on the Electrochemical Behavior of Carbon Paste Electrodes Modified with Meldola Blue and Methylene Green Adsorbed on a Synthetic Zeolite

Abstract

Bibliographical note

Subject classification (UKÄ)

Free keywords

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