In this study, a
biomimetic selective pesticide electrochemical sensor based on copper
phthalocyanine-anthraquinone hybrid (CuPc-AQ) was studied. Electrochemical
activities based on Pc ring and anthraquinone substituent of the CuPc-AQ make
it valuable material for electrochemical sensor studies in detecting of
pesticides. Thin film of CuPc-AQ on ITO electrode (ITO/CuPc-AQ) was exposed to
water samples containing eserine and carbofuran pesticides, separately. Then in
order to observe the sensor behavior of the modified electrode, square wave
voltammetry (SWV), electrochemical impedance spectroscopy (EIS), and double
potential step chronocoulometry (DPSCC) techniques were used. When the
ITO/CuPc-AQ electrode was doped with nano-platinum (nPt) or nano-gold (nAu)
particles, the sensitivity of ITO/CuPc-AQ electrode increased. The lowest
detection limit (DL) (1.23x10-9 mol dm-3) was obtained with ITO/CuPc-AQ-nAu
electrode using electrochemical impedance spectroscopy technique.
Subjects | Chemical Engineering |
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Journal Section | Research Articles |
Authors | |
Publication Date | December 29, 2017 |
Published in Issue | Year 2017 Volume: 1 Issue: 1 |
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