A 2D/2D NiCo-MOF/Ti3C2 heterostructure for simultaneous detection of acetaminophen, dopamine and uric acid by differential pulse voltammetry

2021 ◽  
Author(s):  
Xing Lu ◽  
Feng Zhang ◽  
Yimeng Sun ◽  
Kai Yu ◽  
Guo Wei ◽  
...  
Keyword(s):  
Uric Acid ◽  
Differential Pulse Voltammetry ◽  
Electrochemical Detection ◽  
Simultaneous Detection ◽  
Differential Pulse ◽  
Enzymatic Biosensor ◽  
Pulse Voltammetry

A 2D-2D NiCo-MOF/Ti3C2 heterojunction is constructed as a non-enzymatic biosensor for the simultaneous electrochemical detection of acetaminophen (AP), dopamine (DA) and uric acid (UA) by differential pulse voltammetry. Benefiting from...

Differential pulse voltammetry in vivo - evidence that uric acid contributes to the indole oxidation peak

1983 ◽  
Vol 43 (2-3) ◽  
pp. 203-207 ◽  
Author(s):  
Francesco Crespi ◽  
Trevor Sharp ◽  
Nigel Maidment ◽  
Charles Marsden
Keyword(s):  
Uric Acid ◽  
Differential Pulse Voltammetry ◽  
Differential Pulse ◽  
Oxidation Peak ◽  
Pulse Voltammetry

Electrochemical Detection of Bisphenol A Based on N-Doped Carbon Quantum Dots@Carbon Nanotubes Composite

2020 ◽  
Vol 20 (12) ◽  
pp. 7610-7617
Author(s):  
Zhongzhen Chen ◽  
Haiping Huang ◽  
Yanan Chen ◽  
Ying Ye ◽  
Shuzhen Wu ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Carbon Nanotubes ◽  
Quantum Dots ◽  
Bisphenol A ◽  
Differential Pulse Voltammetry ◽  
Electrochemical Detection ◽  
Glassy Carbon ◽  
Differential Pulse ◽  
Carbon Quantum Dots ◽  
Pulse Voltammetry

A novel nanocomposite of N-Doped Carbon Quantum Dots@Carbon Nanotubes was synthesized in this study for electrochemical detection of bisphenol A by differential pulse voltammetry. The nanocomposite was characterized by transmission electron microscopy, scanning electron microscopy, X-ray powder diffraction and Fourier transform infrared spectroscopy. Electrochemical properties of the nanocomposite modified glassy carbon electrodes were studied via cyclic voltammetry. Differential pulse voltammetry experimental results showed that N-Doped Carbon Quantum Dots@Carbon Nanotubes/glassy carbon electrode exhibited excellent catalysis activity towards electrochemical oxidation of bisphenol A. The oxidation peak current was linearly increased with concentration of bisphenol A in the range from 0.4 μM to 40 μM, with a limit of detection of 65 nM.

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.

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