Electrochemical Sensor for Detection of Polyphenols in Tea and Wine with Differential Pulse Voltammetry and Electrochemical Impedance Spectroscopy Utilizing Tyrosinase and Gold Nanoparticles Decorated Biomembrane

2017 ◽  
Vol 164 (4) ◽  
pp. B118-B126 ◽  
Author(s):  
Sudeshna Datta ◽  
Baishali Kanjilal ◽  
Priyabrata Sarkar
Keyword(s):  
Gold Nanoparticles ◽  
Electrochemical Impedance Spectroscopy ◽  
Impedance Spectroscopy ◽  
Electrochemical Sensor ◽  
Differential Pulse Voltammetry ◽  
Electrochemical Impedance ◽  
Differential Pulse ◽  
Pulse Voltammetry

scholarly journals Adsorption of Guanine, Guanosine, and Adenine at Electrodes Studied by Differential Pulse Voltammetry and Electrochemical Impedance

Langmuir ◽  
2002 ◽  
Vol 18 (6) ◽  
pp. 2326-2330 ◽  
Author(s):  
Ana Maria Oliveira-Brett ◽  
Luís Antônio da Silva ◽  
Christopher M. A. Brett
Keyword(s):  
Differential Pulse Voltammetry ◽  
Electrochemical Impedance ◽  
Differential Pulse ◽  
Pulse Voltammetry

The influence of gold nanoparticles on the electroactivity of nickel tetrasulfonated phthalocyanine

2014 ◽  
Vol 18 (08n09) ◽  
pp. 642-651 ◽  
Author(s):  
Audacity Maringa ◽  
Tebello Nyokong
Keyword(s):  
Gold Nanoparticles ◽  
Electrochemical Impedance Spectroscopy ◽  
Impedance Spectroscopy ◽  
Glassy Carbon ◽  
Electrochemical Impedance ◽  
Modified Electrodes ◽  
Enhancement Effect ◽  
Carbon Electrode ◽  
Cathodic Peak ◽  
Peak Separation

We report on the electrodeposition of gold nanoparticles ( AuNPs ) on a glassy carbon electrode (GCE) followed by deposition of nickel tetrasulfonated phthalocyanine ( NiTSPc ) film by electropolymerization (poly- NiTSPc -GCE) to form Poly- NiTSPc / AuNPs -GCE. The presence of the gold nanoparticles caused a lowering of the anodic and cathodic peak separation (ΔE p ) of ferricyanide from 126 mV on poly- NiTSPc to 110 mV on poly- NiTSPc / AuNPs . The electrooxidation of nitrite improved on modified electrodes compared to GCE, with the latter giving E p = 0.78 V and the modified electrodes gave E p = 0.62 V or 0.61 V. Poly- NiTSPc / AuNPs -GCE had higher currents compared to poly- NiTSPc -GCE. This indicates the enhancement effect caused by the AuNPs . Electrochemical impedance spectroscopy and chronoamperometric studies also showed that poly- NiTSPc / AuNPs -GCE was a better electrocatalyst than poly- NiTSPc -GCE or AuNPs -GCE.

NiFe2O4nanoparticles decorated with MWCNTs as a selective and sensitive electrochemical sensor for the determination of epinephrine using differential pulse voltammetry

2014 ◽  
Vol 6 (17) ◽  
pp. 6885-6892 ◽  
Author(s):  
Ali A. Ensafi ◽  
F. Saeid ◽  
B. Rezaei ◽  
Ali R. Allafchian
Keyword(s):  
Electrochemical Sensor ◽  
Differential Pulse Voltammetry ◽  
Modified Electrode ◽  
Electrochemical Method ◽  
Differential Pulse ◽  
Synergic Effect ◽  
Pulse Voltammetry

A new electrochemical method was developed for epinephrine detection based on NiFe2O4–MWCNT-modified electrode. The nanocomposite has a synergic effect on the oxidation of epinephrine.

Development of a disposable electrochemical sensor for detection of cholesterol using differential pulse voltammetry

2018 ◽  
Vol 159 ◽  
pp. 398-405 ◽  
Author(s):  
Muhammad Azhar Hayat Nawaz ◽  
Marjan Majdinasab ◽  
Usman Latif ◽  
Muhammad Nasir ◽  
Gultekin Gokce ◽  
...  
Keyword(s):  
Electrochemical Sensor ◽  
Differential Pulse Voltammetry ◽  
Differential Pulse ◽  
Pulse Voltammetry
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