Determination of cyanide concentration by chronoamperometry, cyclic voltammetry and fast Fourier transform electrochemical impedance spectroscopy

2021 ◽  
pp. 115449
Author(s):  
Povilas Virbickas ◽  
Aušra Valiūnienė ◽  
Diana Baryševa ◽  
Georgi Popkirov ◽  
Arūnas Ramanavičius
Keyword(s):  
Cyclic Voltammetry ◽  
Fourier Transform ◽  
Electrochemical Impedance Spectroscopy ◽  
Impedance Spectroscopy ◽  
Fast Fourier Transform ◽  
Electrochemical Impedance ◽  
Cyanide Concentration

scholarly journals New Electrode Based on Polymer Bacteria Modified Aluminum for Degradation of Phenol

2021 ◽  
Author(s):  
Raja MAALLAH ◽  
Raja MAALLAH
Keyword(s):  
Cyclic Voltammetry ◽  
Electrochemical Impedance Spectroscopy ◽  
Impedance Spectroscopy ◽  
Polymer Matrix ◽  
Electrochemical Impedance ◽  
Aluminum Electrode ◽  
Simultaneous Production ◽  
Modified Aluminum Electrode

The aims of this work were to examine the new electrode, based on polymer bacteria modified aluminum electrode for simultaneous production of electricity and degradation of phenol. This electrode is based aluminum modified by bacteria inserted in the polymer matrix, developed in situ on the surface. This electrode, designated subsequently by bacteria-polymer-aluminum, Showed stable response and was characterized with voltametric methods, as cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The experimental results revealed that the prepared electrode could be a feasible for degradation of hazardous phenol pollutants. The sensor was successfully applied to the determination of phenol in a real sample with satisfactory results.

Redox-probe-free scanning electrochemical microscopy combined with fast Fourier transform electrochemical impedance spectroscopy

2019 ◽  
Vol 21 (19) ◽  
pp. 9831-9836 ◽  
Author(s):  
Aušra Valiūnienė ◽  
Jurate Petroniene ◽  
Inga Morkvenaite-Vilkonciene ◽  
Georgi Popkirov ◽  
Almira Ramanaviciene ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Electrochemical Impedance Spectroscopy ◽  
Impedance Spectroscopy ◽  
Fast Fourier Transform ◽  
Electrochemical Impedance ◽  
Scanning Electrochemical Microscopy ◽  
Redox Probe ◽  
Electrochemical Microscopy

Scanning electrochemical microscopy (SECM) hybridized with fast Fourier transform-based electrochemical impedance spectroscopy (FFT-EIS) seems to be a powerful variation of scanning electrochemical impedance microscopy (SEIM).

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