Quantized double layer charging of dodecanethiol protected larger Au nanoclusters: combined investigations using differential pulse voltammetry, cyclic voltammetry and impedance technique

2004 ◽  
Vol 6 (7) ◽  
pp. 661-665 ◽  
Author(s):  
Nirmalya Kumar Chaki ◽  
Bhalchandra Kakade ◽  
Kunjukrishna P Vijayamohanan
Keyword(s):  
Cyclic Voltammetry ◽  
Differential Pulse Voltammetry ◽  
Double Layer ◽  
Differential Pulse ◽  
Au Nanoclusters ◽  
Impedance Technique ◽  
Pulse Voltammetry

scholarly journals Synthesis and electrochemical characterization of substituted indolizine carboxylates

2013 ◽  
Vol 78 (6) ◽  
pp. 827-838 ◽  
Author(s):  
Maria-Laura Soare ◽  
Eleonora-Mihaela Ungureanu ◽  
Emilian Georgescu ◽  
Liviu Birzan
Keyword(s):  
Cyclic Voltammetry ◽  
Differential Pulse Voltammetry ◽  
Electrochemical Behaviour ◽  
Substituent Effects ◽  
Detailed Comparison ◽  
Differential Pulse ◽  
Synthesis And Characterization ◽  
Redox Processes ◽  
Pulse Voltammetry

This work is devoted to the synthesis and characterization of new indolizine derivatives. Particular attention was paid to the electrochemical investigations by cyclic voltammetry and differential pulse voltammetry. The redox processes for each compound were established, analyzed and assessed to the particular functional groups at which they take place. This assessment was based on detailed comparison between the electrochemical behaviour of the compounds, similarities in their structure, as well as substituent effects.

scholarly journals Simultaneous detection of dopamine, tyrosine and ascorbic acid using NiO/graphene modified graphite electrode

2020 ◽  
Vol 10 (3) ◽  
pp. 5599-5609 ◽  
Keyword(s):  
Ascorbic Acid ◽  
Cyclic Voltammetry ◽  
Differential Pulse Voltammetry ◽  
Modified Electrode ◽  
Graphite Electrode ◽  
Simultaneous Detection ◽  
Oxidation Mechanism ◽  
Differential Pulse ◽  
Peak Potential ◽  
Pulse Voltammetry

In this work, an electrochemical sensor is fabricated by decorating the surface of graphite electrode with NiO/graphene (NGMG) nanoparticles and employed for the detection of dopamine (DA), tyrosine (Tyr) and ascorbic acid (AA). The structure and morphology of prepared NiO nanoparticles are examined by XRD,SEM, FTIR and Raman techniques. The electrochemical properties have been investigated by cyclic voltammetry (CV), differential pulse voltammetry (DPV) and chronoamperommety. The modified electrode is prepared by a simple drop casting method. The electrode shows good electro catalyticactivity towards oxidation of DA, Tyr and AA. It successfully separates the oxidation current signals of AA, DA and Tyr into clearly visible three distinct oxidation peaks compared to a single, overlapped oxidative peak on bare graphite electrode. The peak potential difference between AA-DA, DA-Tyr and AA-Tyr is 228 mV, 303 mV and 565 mV respectively in cyclic voltammetry (CV) studies and the corresponding peak potential separations are 243 mV, 318 mV and 561 mV respectively in differential pulse voltammetry (DPV). It is found that oxidation mechanism of DA, AA and Tyr on NGMG are different owing to a different type of interaction of the modified layer with the bio-analytes. The modified electrode, NGMG has high selectivity and sensitivity in addition to other factors like low cost, convenient and a hassle free electrochemical method for simultaneous determination of DA, AA and Tyr in their ternary mixture.

Detailed study of interactions between eosin yellow and gemini pyridinium surfactants

RSC Advances ◽  
2016 ◽  
Vol 6 (75) ◽  
pp. 71692-71704 ◽  
Author(s):  
Renu Sharma ◽  
Ajar Kamal ◽  
Rakesh Kumar Mahajan
Keyword(s):  
Cyclic Voltammetry ◽  
Light Scattering ◽  
Dynamic Light Scattering ◽  
Differential Pulse Voltammetry ◽  
Differential Pulse ◽  
Pulse Voltammetry ◽  
Uv Visible ◽  
Eosin Yellow

Interactions of dianionic dye, eosin yellow with gemini pyridinium surfactants have been investigated using conductivity, UV-visible, fluorescence, cyclic voltammetry, differential pulse voltammetry, potentiometry and dynamic light scattering.

scholarly journals Promotion Effect of Palladium on BiVO4 Sensing Material for Epinephrine Detection

Catalysts ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 1083
Author(s):  
Hsiang-Ning Luk ◽  
Tsong-Yung Chou ◽  
Bai-Hao Huang ◽  
Yu-Syuan Lin ◽  
Hui Li ◽  
...  
Keyword(s):  
Cyclic Voltammetry ◽  
Differential Pulse Voltammetry ◽  
Detection System ◽  
Differential Pulse ◽  
Electrochemical Sensing ◽  
X Ray Diffraction ◽  
Sensing Material ◽  
Transmission Electron ◽  
Pulse Voltammetry ◽  
Epinephrine Concentration

In this study, the Pd/BiVO4 composite was prepared by hydrothermal method as an electrochemical sensing material for epinephrine. X-ray diffraction, scanning electron microscopy, and a transmission electron microscope were used to characterize the samples. In the electrochemical detection system, cyclic voltammetry and differential pulse voltammetry were applied to measure the concentration of the epinephrine solution (0.9–27.5 µM) with the Pd/BiVO4-coated glassy carbon electrode. As a result, the oxidation peak current of Pd/BiVO4/GCE demonstrated good linearity with the epinephrine concentration. The detection limit of the epinephrine concentration by cyclic voltammetry and differential pulse voltammetry were 0.262 µM and 0.154 µM, respectively. Additionally, the proposed sensing material exhibited good reproducibility, stability, and selectivity. A plausible sensing mechanism was proposed.

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