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Determination of Pentachlorophenol at Carbon Nanotubes Modified Electrode Incorporated with -Cyclodextrin

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A facile and reliable electrochemical technique at -cyclodextrin incorporated carbon nanotubes modified glassy carbon electrode (-CD/CNTs/GCE) was proposed for determination of pentachlorophenol (PCP). The electrochemical behavior of PCP at the -CD/CNTs/GCE was investigated by cyclic voltammetry and linear sweep voltammetry. The -CD/CNTs/GCE showed good analytical performance characteristics in electrocatalytic oxidation of PCP, compared with the simple carbon nanotube modified electrode (CNTs/GCE) and bare glassy carbon electrode (GCE). After accumulation for 5 min on -CD/CNTs/GCE, the peak current increased linearly with the concentration of PCP in the range from 8.0 × 10−7 to 1.04 × 10−5 mol/L. The detection limit was 4.0 × 10−8 mol/L at 3 level. The proposed electrode presented good repeatability for the determination of PCP in artificial wastewater, and the recovery was 97%–103%. This modified electrode combined the advantages of carbon nanotubes and supramolecular cyclodextrin, leading to new capabilities for electrochemical detection of PCP.


Document Type: Research Article


Publication date: 2010-11-01

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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