Surface interaction of copper phthalocyanine modified single walled carbon nanotubes with pesticides

HASSAN, Aseel, BANIMUSLEM, Hikmat, BASOVA, Tamara, GÜLMEZ, Asuman Dakoğlu, DURMUŞ, Mahmut, GÜREK, Ayşe Gül and AHSEN, Vefa (2016). Surface interaction of copper phthalocyanine modified single walled carbon nanotubes with pesticides. Sensors and Actuators B: Chemical, 224, 780-788.

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Hybrid materials were produced by mixing tetrakis(hexadecylthio) substituted copper(II) phthalocyanine (CuPcR4) with acidified single-walled carbon nanotubes (SWCNTs) and they were characterised by UV-vis absorption spectroscopy, scanning electron microscopy and atomic force microscopy. Thin films of pristine CuPcR4 and CuPcR4/SWCNT were prepared by spin coating onto gold-coated glass slides and applied as active layers to detect pentachlorophenol (PCP), 2-chlorophenol, diuron and simazine in water utilising total internal reflection ellipsometry (TIRE) as an optical detection method. Different concentrations of pesticides in water ranging from 1 to 25 μg/L have been examined in the current work. It is revealed that the shifts in Δ(λ) spectra of CuPcR4/SWCNT films were evidently larger than those produced by the pristine CuPcR4 films, indicating largely improved films' sensitivity of the hybrid films. The sensitivity has been calculated according to the phase shift in the Δ(λ) spectra. The higher sensitivity was found to be 0.00396/(μg/L) towards PCP in case of CuPcR4/SWCNT sensor. The lower detection limit has been calculated to be 840 ng/L.

Item Type: Article
Research Institute, Centre or Group - Does NOT include content added after October 2018: Materials and Engineering Research Institute > Advanced Coatings and Composites Research Centre
Identification Number:
Page Range: 780-788
Depositing User: Carmel House
Date Deposited: 15 Aug 2016 11:34
Last Modified: 18 Mar 2021 18:07

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