Determination of vanillin by using gold nanoparticle-modified screen-printed carbon electrode modified with graphene quantum dots and Nafion

2018 ◽  
Vol 185 (3) ◽  
Author(s):  
Gema M. Durán ◽  
Eulogio J. Llorent-Martínez ◽  
Ana M. Contento ◽  
Ángel Ríos
Keyword(s):  
Quantum Dots ◽  
Gold Nanoparticle ◽  
Graphene Quantum Dots ◽  
Carbon Electrode ◽  
Screen Printed Carbon Electrode ◽  
Screen Printed

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.

Natural Melanin Nanoparticle‐decorated Screen‐printed Carbon Electrode: Performance Test for Amperometric Determination of Hexavalent Chromium as Model Trace

2020 ◽  
Vol 32 (8) ◽  
pp. 1696-1706 ◽  
Author(s):  
Gizem Kaleli‐Can ◽  
Busra Ozlu ◽  
Hatice Ferda Özgüzar ◽  
Baran Onal‐Ulusoy ◽  
Gözde Kabay ◽  
...  
Keyword(s):  
Hexavalent Chromium ◽  
Performance Test ◽  
Carbon Electrode ◽  
Amperometric Determination ◽  
Electrode Performance ◽  
Screen Printed Carbon Electrode ◽  
Screen Printed
Sign in / Sign up

Export Citation Format

Share Document