NDLI: Studies on the electrochemical properties of nickel phtalocyanine for impedimetric detection of environment pollutants: hydroquinone and bisphenol A

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Studies on the electrochemical properties of nickel phtalocyanine for impedimetric detection of environment pollutants: hydroquinone and bisphenol A

Content Provider	IET Digital Library
Author	Zahou, Imène Mlika, Rym Chaabane, Rafik Ben Renault, Nicole Jaffrezic Ouada, Hafedh Ben
Abstract	A self-assembled film of nickel phtalocyanine (NiPc) has been immobilised onto gold (Au) substrate to develop a new impedimetric method for environmental pollutants detection. NiPc/Au electrode was first characterised using contact angle measurements and cyclic voltammetry to investigate the adhesion and the kinetic behaviour of the self-assembled film. Results demonstrated the interaction between Au and benzene group and at the same time showed the formation of a completely covered NiPc layer on the Au surface. In addition, the NiPc film seems to exhibit reversible redox behaviour and is found to act as an electronic conductor which allows rapid electron transfer. The electrochemical impedance spectroscopy spectra of the NiPc/Au electrode, as a function of hydroquinone (HQ) and Bisphenol A (BPA) concentration, reveal that the value of the charge transfer resistance increases with increased concentration. The electrical behaviour of the structure was studied according to an equivalent circuit by ﬁtting the experimental spectra. Moreover, this technique demonstrates that this membrane exhibits a high sensitivity towards the toxic pollutants HQ and BPA. The differences in selectivity are clearly displayed by variations in the membrane resistance (R m) and in the charge transfer resistance (R tc) of the interface.
Starting Page	315
Ending Page	321
Page Count	7
ISSN	17518822
Volume Number	9
e-ISSN	17518830
Issue Number	Issue 3, May (2015)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-smt/9/3
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-smt.2014.0027
Journal	IET Science, Measurement & Technology
Publisher Date	2014-09-15
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Adhesion Bisphenol A Charge Transfer Resistance Chemical Analysis Contact Angle Measurement Cyclic Voltammetry Electrochemical Analytical Method Electrochemical Impedance Spectroscopy Electrochemical Property Electrochemistry And Electrophoresis Electronic Conductor Environment Pollutants Environmental Pollutants Detection Equivalent Circuit Gold Substrate Hydroquinone Impedimetric Detection Kinetic Behaviour Measurement And Control Technique And Instrumentation in Environmental Science Membrane Resistance Nickel Compound Nickel Phtalocyanine Organic Compound Pollution Detection And Control Pollution Measurement Rapid Electron Transfer Reversible Redox Behaviour Self-assembled Film Thin Film Toxic Pollutants Voltammetry
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Electrical and Electronic Engineering

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