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- Title
UNMODIFIED/TIO<sub>2</sub>-MODIFIED CARBON NANOTUBES COMPOSITE ELECTRODES FOR PENTACHLOROPHENOL DETECTION FROM WATER.
- Authors
Jakab, Ágnes; Manea, Florica; Bandas, Cornelia; Remes, Adriana; Pop, Aniela; Pode, Rodica; Schoonman, Joop
- Abstract
In this work, cyclic voltammetry (CV) and differential-pulsed voltammetry (DPV) were used to detect pentachlorophenol (PCP) at two types of multi-walled carbon nanotubes (CNT)-based composite electrode, i.e., TiO2-modified-CNT-Epoxy (TiO2-CNT- Epoxy) and CNT-Epoxy in 0.1 M sodium sulphate solution supporting electrolyte. The electrochemical behaviour of the electrodes was investigated in the absence and presence of UV irradiation. A single oxidation peak at a potential value of about +1 V versus SCE with the characteristics of an irreversible reaction was noticed for PCP electrooxidation. The linear dependence of current versus PCP concentrations was reached in a wide concentration range from 10 to 100 µM PCP. A series of optimization studies were performed on the pulsed voltammetric parameters. The best electroanalytical performance for PCP detection was obtained in the case of TiO2-CNT-Epoxy electrode under UV irradiation, which informed about the its photoelectrocatalytic activity towards PCP oxidation.
- Subjects
CYCLIC voltammetry; PENTACHLOROPHENOL; CARBON nanotubes; ELECTRODES; COMPOSITE materials research
- Publication
Environmental Engineering & Management Journal (EEMJ), 2013, Vol 12, Issue 5, p999
- ISSN
1582-9596
- Publication type
Article
- DOI
10.30638/eemj.2013.123