Adsorption kinetics of phosphonic acids and proteins on functionalized Indium tin oxide surfaces using electrochemical impedance spectroscopy

2016 ◽  
Vol 197 ◽  
pp. 1-9 ◽  
Author(s):  
R. Venkata Jagadeesh ◽  
V. Lakshminarayanan
Keyword(s):  
Electrochemical Impedance Spectroscopy ◽  
Impedance Spectroscopy ◽  
Adsorption Kinetics ◽  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Electrochemical Impedance ◽  
Oxide Surfaces ◽  
Phosphonic Acids ◽  
Kinetics Of

A label-free electrochemical immunosensor for highly sensitive detection of TNF α based on star polymer modified disposable ITO electrode

2020 ◽  
Vol 16 ◽  
Author(s):  
Elif Burcu AYDIN ◽  
Muhammet AYDIN ◽  
Mustafa Kemal SEZGİNTÜRK
Keyword(s):  
Electrochemical Impedance Spectroscopy ◽  
Impedance Spectroscopy ◽  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Surface Characterization ◽  
Electrochemical Impedance ◽  
Star Polymer ◽  
Oxide Electrode ◽  
Indium Tin Oxide Electrode ◽  
Tnf Α

: In this study, it was aimed to develop a reliable tool based on star-shaped poly(glycidyl methacrylate) polymer coated disposable indium tin oxide electrode for determination of Tumor necrosis factor-alpha (TNF α), an important disease biomarker. Star shaped polymer was used as an interface material for anti-TNF α antibodies immobilization. Anti-TNF α antibodies were immobilized covalently onto polymer coated indium tin oxide electrode. The immunosensor responses were recorded by electrochemical impedance spectroscopy and cyclic voltammetry techniques and electrochemical impedance spectroscopy was utilized for TNF α determination. The suggested immunosensor exhibited a linear range between 0.02 and 4 pg/mL TNF α, and the detection limit was found as 6 fg/mL. Scanning electron microscopy and atomic force microscopy were used for electrode surface characterization. In addition, the suggested immunosensor was used for TNF α sensing in human serum samples. The results displayed recoveries between 97.07 and 100.19%. Moreover, this immunosensor had a simple fabrication procedure and a long storage-stability.

Understanding the electrochemical potential and diffusivity of MnO/C nanocomposites at various charge/discharge states

2019 ◽  
Vol 7 (13) ◽  
pp. 7831-7842 ◽  
Author(s):  
Chaofeng Liu ◽  
Haoyu Fu ◽  
Yanyan Pei ◽  
Jiandong Wu ◽  
Vivek Pisharodi ◽  
...  
Keyword(s):  
Electrochemical Impedance Spectroscopy ◽  
Impedance Spectroscopy ◽  
Crystal Field ◽  
Electrochemical Impedance ◽  
Electrochemical Potential ◽  
Field Analysis ◽  
Kinetics Of ◽  
Charge Discharge

Electrochemical potential and lithiation kinetics of MnO/C nanocomposites were investigated by crystal field analysis and electrochemical impedance spectroscopy.

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