Anodic oxidation of chlorophenols in micelles and microemulsions on glassy carbon electrode: the medium effect on electroanalysis and electrochemical detoxification
IR@CECRI: CSIR-Central Electrochemical Research Institute, Karaikudi
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| Title |
Anodic oxidation of chlorophenols in micelles and microemulsions
on glassy carbon electrode: the medium effect on electroanalysis
and electrochemical detoxification
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| Creator |
Anandhakumar, S.
Chandrasekaran, M. Noel, M. |
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| Subject |
Electroorganic
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| Description |
The voltammetric behavior of 2, 4-dichlorophenol
(DCP), 2, 4, 6-trichlorophenol (TCP) and pentachlorophenol
(PCP) in aqueous sodium hydroxide (NaOH),
aqueous NaOH–sodium dodecylsulphate (SDS) micellar
solution and SDS/n-hexane/n-butanol/water microemulsion
on glassy carbon electrode (GC) is reported. In aqueous
alkaline medium, the electrode fouling is significant.
Among the three media, the electrode fouling is the minimum
in aqueous microemulsion. The fouling effect also
depends on the nature of the phenolic compound. DCP
exhibits the maximum fouling effect, and PCP exhibits the
minimum fouling effect. During oxidation of the TCP in
the microemulsion, quinone–hydroquinone-like redox
couples were formed on the electrode surface. Reproducible
voltammetric responses without electrode fouling
could be obtained for all the three phenolic compounds up
to 20 mM concentrations in microemulsion. In the galvanostatic
oxidation in NaOH media, DCP and TCP led to
formation of polymeric films on the glassy carbon surface.
The Average molecular weight of the polymer obtained is
in the range of 7,500–9,500. Even 2.5% by weight of
chlorophenols could be oxidized under galvanostatic
conditions in microemulsions without significant fouling.
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| Publisher |
Springer Verlag
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| Date |
2010
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://cecri.csircentral.net/273/1/2010-062.pdf
Anandhakumar, S. and Chandrasekaran, M. and Noel, M. (2010) Anodic oxidation of chlorophenols in micelles and microemulsions on glassy carbon electrode: the medium effect on electroanalysis and electrochemical detoxification. Journal of Applied Electrochemistry, 40. pp. 303-310. ISSN 0021-891X |
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| Relation |
http://cecri.csircentral.net/273/
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