Voltammetric study of multiwalled carbon nanotube modified screen printed carbon electrode for the determination of a phytoconstituent wedelolactone

2018 ◽  
Vol 5 (3) ◽  
pp. 9167-9172 ◽  
Author(s):  
Sachin Saxena ◽  
Sudhir Kumar Verma ◽  
Soami P.Satsangee
Keyword(s):  
Carbon Nanotube ◽  
Multiwalled Carbon Nanotube ◽  
Carbon Electrode ◽  
Multiwalled Carbon ◽  
Voltammetric Study ◽  
Screen Printed Carbon Electrode ◽  
Screen Printed

Flow injection amperometric sensing of hydroxylamine at Cu(II)-neocuproine functionalized multiwalled carbon nanotube/screen printed carbon electrode

2021 ◽  
Author(s):  
Selen Ayaz ◽  
Yusuf Dilgin ◽  
Resat Apak
Keyword(s):  
Carbon Nanotube ◽  
Flow Injection ◽  
Flow Injection Analysis ◽  
Multiwalled Carbon Nanotube ◽  
Carbon Electrode ◽  
Multiwalled Carbon ◽  
Fast Detection ◽  
Screen Printed Carbon Electrode ◽  
Amperometric Sensing ◽  
Screen Printed

This work describes a flow injection analysis (FIA) method for sensitive, selective and fast detection of hydroxylamine (NH2OH) at a multiwalled carbon nanotube/screen printed carbon electrode (MWCNT/SPCE) modified with an...

scholarly journals First Electrochemical Sensor (Screen-Printed Carbon Electrode Modified with Carboxyl Functionalized Multiwalled Carbon Nanotubes) for Ultratrace Determination of Diclofenac

Materials ◽  
2020 ◽  
Vol 13 (3) ◽  
pp. 781 ◽  
Author(s):  
Agnieszka Sasal ◽  
Katarzyna Tyszczuk-Rotko ◽  
Magdalena Wójciak ◽  
Ireneusz Sowa
Keyword(s):  
Carbon Nanotubes ◽  
Electrochemical Sensor ◽  
Multiwalled Carbon Nanotubes ◽  
Active Surface Area ◽  
Carbon Electrode ◽  
Multiwalled Carbon ◽  
Screen Printed Carbon Electrode ◽  
Functionalized Multiwalled Carbon Nanotubes ◽  
Screen Printed

A simple, sensitive and time-saving differential-pulse adsorptive stripping voltammetric (DPAdSV) procedure using a screen-printed carbon electrode modified with carboxyl functionalized multiwalled carbon nanotubes (SPCE/MWCNTs-COOH) for the determination of diclofenac (DF) is presented. The sensor was characterized using optical profilometry, SEM, and cyclic voltammetry (CV). The use of carboxyl functionalized MWCNTs as a SPCE modifier improved the electron transfer process and the active surface area of sensor. Under optimum conditions, very sensitive results were obtained with a linear range of 0.1–10.0 nmol L−1 and a limit of detection value of 0.028 nmol L−1. The SPCE/MWCNTs-COOH also exhibited satisfactory repeatability, reproducibility, and selectivity towards potential interferences. Moreover, for the first time, the electrochemical sensor allows determining the real concentrations of DF in environmental water samples without sample pretreatment steps.

Electrochemical reduction of sunset yellow at a multiwalled carbon nanotube (MWCNT)-modified glassy carbon electrode and its analytical application

2010 ◽  
Vol 88 (7) ◽  
pp. 676-681 ◽  
Author(s):  
Yuan-Zhi Song
Keyword(s):  
Carbon Nanotube ◽  
Electrochemical Reduction ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Multiwalled Carbon Nanotube ◽  
Carbon Electrode ◽  
Modified Glassy Carbon Electrode ◽  
Sunset Yellow ◽  
Multiwalled Carbon

The electrochemical reduction of sunset yellow at a multiwalled carbon nanotube (MWCNT)-modified glassy carbon electrode is investigated using cyclic voltammetry. A simple, sensitive, and inexpensive method for determination of sunset yellow in soft drinks is proposed and the accuracy and reproducibility of this determination method are evaluated. This method is satisfactorily applied for the determination of sunset yellow in soft drinks in the concentration range of 1.2–125.0 mg L–1 and 125.0–265.0 mg L–1, with a detection limit of 0.5 mg L–1.

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