publication . Article . 2012

Enhanced host-guest electrochemical recognition of herbicide MCPA using a β-cyclodextrin carbon nanotube sensor.

E. Manuela Garrido; Jorge Garrido; Christopher M.A. Brett; Borges Fernanda;
Open Access English
  • Published: 01 Jan 2012
  • Publisher: Elsevier
  • Country: Portugal
Abstract
An electrochemical sensor for the determination of the chlorophenoxy herbicide MCPA has been developed, based on a combination of multi-walled carbon nanotubes with incorporated b-cyclodextrin and a polyaniline film modified glassy carbon electrode. The proposed molecular host–guest recogni-tion based sensor has a high electrochemical sensitivity for the determination of MCPA. The electrochemical behaviour of MCPA at the chemically modified electrode was investigated in detail by cyclic voltammetry. The results indicate that the b-CD/MWCNT modified glassy carbon electrode exhibits efficient electrocatalytic oxidation of MCPA with high sensitivity, stability and lifet...
Subjects
free text keywords: Herbicides, MCPA, Voltammetric sensors, Modified electrodes, b-cyclodextrin, Carbon nanotubes, General Chemistry
Related Organizations
Funded by
FCT| PTDC/AGR-AAM/105044/2008
Project
PTDC/AGR-AAM/105044/2008
NanoPest - Nanotecnology for Pesticide Management
  • Funder: Fundação para a Ciência e a Tecnologia, I.P. (FCT)
  • Project Code: 105044
  • Funding stream: 5876-PPCDTI
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