Print Email Facebook Twitter Electrochemical Determination of Pentachlorophenol in Water on a Multi-Wall Carbon Nanotubes-Epoxy Composite Electrode Title Electrochemical Determination of Pentachlorophenol in Water on a Multi-Wall Carbon Nanotubes-Epoxy Composite Electrode Author Remes, A. Pop, A. Manea, F. Baciu, A. Picken, S.J. Schoonman, J. Faculty Applied Sciences Department ChemE/Chemical Engineering Date 2012-05-25 Abstract The aim of this study was the preparation, characterization, and application of a multi-wall carbon nanotubes-epoxy composite electrode (MWCNT-EP) with 25%, wt. MWCNTs loading for the voltammetric/amperometric determination of pentachlorophenol (PCP) in aqueous solutions. The structural and morphological aspects of the MWCNT-EP composite electrode were examined by scanning electron microscopy. The electrical properties were characterized by direct-current conductivity measurements in relation with the percolation threshold. The electrochemical behavior of PCP at the MWCNT-EP composite electrode was investigated using cyclic voltammetry in 0.1 M Na2SO4 supporting electrolyte in order to establish the parameters for amperometric/voltammetric determination of PCP. The linear dependence of current vs. PCP concentrations was reached in a wide concentration range from 0.2 to 12 ?M PCP using cyclic voltammetry, differential-pulsed voltammetry, square-wave voltammetry, chronoamperometry, and multiple-pulsed amperometry techniques. The best electroanalytical performances of this composite electrode were achieved using a pre-concentration/square-wave voltammetric technique and also multiple-pulsed amperometry techniques envisaging the practical applications. The ease of preparation, high sensitivity, and stability of this composite electrode should open novel avenues and applications for fabricating robust sensors for detection of many important species. Subject multi-wall carbon nanotubes-epoxy composite electrodeelectrochemical determinationpentachlorophenolsquare-wave voltammetrycyclic voltammetry To reference this document use: http://resolver.tudelft.nl/uuid:875d52ca-852a-4c32-b929-9d7d02839bda DOI https://doi.org/10.3390/s120607033 Publisher MDPI ISSN 1424-8220 Source Sensors, 12 (6), 2012 Part of collection Institutional Repository Document type journal article Rights (c) 2012 The Author(s)This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/) Files PDF Picken_2012.pdf 777.42 KB Close viewer /islandora/object/uuid:875d52ca-852a-4c32-b929-9d7d02839bda/datastream/OBJ/view