Electro‐oxidation of acetaminophen on nickel/poly(o‐aminophenol)/multi‐walled carbon nanotube nanocomposite modified graphite electrode

2014 ◽  
Vol 9 (10) ◽  
pp. 691-696 ◽  
Author(s):  
Ali Naeemy ◽  
Ali Mohammadi ◽  
Hedieh Bakhtiari ◽  
Nasim Ashouri ◽  
Roderick Bryan Walker
Keyword(s):  
Carbon Nanotube ◽  
Graphite Electrode ◽  
Multi Walled Carbon Nanotube ◽  
Electro Oxidation

scholarly journals Electro-oxidation of formoterol fumarate on the surface of novel poly(thiazole yellow-G) layered multi-walled carbon nanotube paste electrode

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
N. Hareesha ◽  
J. G. Manjunatha
Keyword(s):  
Carbon Nanotube ◽  
Active Sites ◽  
Oxidation Peak ◽  
Peak Potential ◽  
Peak Current ◽  
Multi Walled Carbon Nanotube ◽  
Carbon Nanotube Paste Electrode ◽  
Electro Oxidation ◽  
Paste Electrode ◽  
Formoterol Fumarate

AbstractThe current study explicates the electro-oxidation behavior of formoterol fumarate (FLFT) in the presence of uric acid (UA) on the surface of poly thiazole yellow-G (TY-G) layered multi-walled carbon nanotube paste electrode (MWCNTPE). The modified (Poly(TY-G)LMWCNTPE) and unmodified (MWCNTPE) electrode materials were characterized through electrochemical impedance spectroscopy (EIS), field emission scanning electron microscopy (FE-SEM), and cyclic voltammetry (CV) approaches. The characterization data confirms the good conducting and electrocatalytic nature with more electrochemical active sites on the Poly(TY-G)LMWCNTPE than MWCNTPE towards the FLFT analysis in the presence of UA. Poly(TY-G)LMWCNTPE easily separates the two drugs (FLFT and UA) even though they both have nearer oxidation peak potential. The electro-catalytic activity of the developed electrode is fast and clear for FLFT electro-oxidation in 0.2 M phosphate buffer (PB) of pH 6.5. The Poly(TY-G)LMWCNTPE offered a well-resolved peak with the highest electro-oxidation peak current at the peak potential of 0.538 V than MWCNTPE. The potential scan rate and oxidation peak growth time studies show the electrode reaction towards FLFT electro-oxidation is continued through a diffusion-controlled step. The variation of concentration of FLFT in the range from 0.2 to 1.5 µM (absence of UA) and 3.0 to 8.0 μM (presence of UA) provides a good linear relationship with increased peak current and a lower limit of detection (LOD) values of 0.0128 µM and 0.0129 µM, respectively. The prepared electrode gives a fine recovery for the detection of FLFT in the medicinal sample with acceptable repeatability, stability, and reproducibility.

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