TY - JOUR
T1 - Fabrication of a sensitive electrochemical sensor of 2,4-dichlorophenoxyacetic acid herbicide based on synergistic catalysis of silver/manganese oxide nanoparticles and polyalizarin at low potential
AU - Fathi, Serveh
AU - Rezaee, Reza
AU - Maleki, Afshin
AU - Amini, Nader
AU - Safari, Mahdi
AU - Lee, Seung Mok
N1 - Publisher Copyright:
© 2021 Desalination Publications. All rights reserved.
PY - 2021/7
Y1 - 2021/7
N2 - A new electrochemical method for determining 2,4-dichlorophenoxyacetic acid (2,4-D) in aqueous solutions was proposed. A glassy carbon electrode was modified with silver, manganese oxide nanoparticles, and alizarin yellow R polymer (Ag-MnOxNPs/PAYR). Scanning electron microscopy, energy dispersive X-ray spectroscopy and electrochemical impedance spectroscopy were used in order to characterize the modified electrode. The electrochemical attributes of 2,4-D at pH 1–13 were studied with the proposed electrode. In order to investigate the electrocatalytical oxidation attributes of this sensor, cyclic voltammetry and differential pulse voltammetry (DPV) were used. The linear range (22–11,752 μM) and detection of limit (7.33 μM) were appraised for oxidation peak at 0.8V by cyclic voltammetry method. In addition, the linear range (6–14,308 μM) and detection of limit (2 μM) were obtained by DPV technique. Results illustrated that the modified electrode has low detection limit, high linear range, and good repeatability at pH 6. Furthermore, this electrode was used for the analysis of 2,4-D in water samples.
AB - A new electrochemical method for determining 2,4-dichlorophenoxyacetic acid (2,4-D) in aqueous solutions was proposed. A glassy carbon electrode was modified with silver, manganese oxide nanoparticles, and alizarin yellow R polymer (Ag-MnOxNPs/PAYR). Scanning electron microscopy, energy dispersive X-ray spectroscopy and electrochemical impedance spectroscopy were used in order to characterize the modified electrode. The electrochemical attributes of 2,4-D at pH 1–13 were studied with the proposed electrode. In order to investigate the electrocatalytical oxidation attributes of this sensor, cyclic voltammetry and differential pulse voltammetry (DPV) were used. The linear range (22–11,752 μM) and detection of limit (7.33 μM) were appraised for oxidation peak at 0.8V by cyclic voltammetry method. In addition, the linear range (6–14,308 μM) and detection of limit (2 μM) were obtained by DPV technique. Results illustrated that the modified electrode has low detection limit, high linear range, and good repeatability at pH 6. Furthermore, this electrode was used for the analysis of 2,4-D in water samples.
KW - 2
KW - 4-dichlorophenoxyacetic acid herbicide
KW - Alizarin yellow R
KW - Manganese oxide nanoparticles
KW - Sensor
KW - Silver nanoparticles
UR - http://www.scopus.com/inward/record.url?scp=85112280551&partnerID=8YFLogxK
U2 - 10.5004/dwt.2021.27370
DO - 10.5004/dwt.2021.27370
M3 - Article
AN - SCOPUS:85112280551
SN - 1944-3994
VL - 229
SP - 283
EP - 290
JO - Desalination and Water Treatment
JF - Desalination and Water Treatment
ER -