scholarly journals Preparation of an Electrochemical Sensor Based on Multi- Walled Carbon Nanotubes/Molecularly Imprinted Polymers for the Detection of Capsaicin in Gutter Oil by Differential Pulse Voltammetry

2020 ◽  
pp. 8437-8449
Author(s):  
Mi Wang ◽  
Keyword(s):  
Carbon Nanotubes ◽  
Electrochemical Sensor ◽  
Differential Pulse Voltammetry ◽  
Molecularly Imprinted Polymers ◽  
Differential Pulse ◽  
Molecularly Imprinted ◽  
Imprinted Polymers ◽  
Multi Walled Carbon Nanotubes ◽  
Pulse Voltammetry ◽  
Walled Carbon Nanotubes

Molecularly imprinted polymers on multi-walled carbon nanotubes as an efficient absorbent for preconcentration of morphine and its chemiluminometric determination

RSC Advances ◽  
2016 ◽  
Vol 6 (96) ◽  
pp. 93445-93452 ◽  
Author(s):  
Ali Lotfi ◽  
Sepideh Karimi ◽  
Javad Hassanzadeh
Keyword(s):  
Carbon Nanotubes ◽  
Molecularly Imprinted Polymers ◽  
Molecularly Imprinted ◽  
Selective Method ◽  
Imprinted Polymers ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

A simple and selective method was described for the determination of morphine based on its preconcentration by molecularly imprinted polymers on multi-walled carbon nanotubes prior to its chemiluminometric recognition.

A Sensitive and Selective Electrochemical Sensor for Sulfadimethoxine Based on Electropolymerized Molecularly Imprinted Poly (o-aminophenol) Film

2020 ◽  
Vol 16 (4) ◽  
pp. 413-420 ◽  
Author(s):  
Youyuan Peng ◽  
Qiaolan Ji
Keyword(s):  
Electrochemical Sensor ◽  
Polymer Film ◽  
Water Samples ◽  
Differential Pulse ◽  
Imprinted Polymer ◽  
Molecularly Imprinted ◽  
Long Term Stability ◽  
Multi Walled Carbon Nanotubes ◽  
Aquaculture Water ◽  
Walled Carbon Nanotubes

Background: As a broad-spectrum antibiotic of the sulfonamide family, Sulfadimethoxine (SDM) has been widely utilized for therapeutic and growth-promoting purposes in animals. However, the use of SDM can cause residual problems. Even a low concentration of SDM in the aquatic system can exert toxic effects on target organisms and green algae. Therefore, the quantitation of SDM residues has become an important task. Methods: The present work describes the development of a sensitive and selective electrochemical sensor for sulfadimethoxine based on molecularly imprinted poly(o-aminophenol) film. The molecular imprinted polymer film was fabricated by electropolymerizing o-aminophenol in the presence of SDM after depositing carboxylfunctionalized multi-walled carbon nanotubes onto a glassy carbon electrode surface. SDM can be quickly removed by electrochemical methods. The imprinted polymer film was characterized by cyclic voltammetry, differential pulse voltammetry and scanning electron microscopy. Results: Under the selected optimal conditions, the molecularly imprinted sensor shows a linear range from 1.0 × 10-7 to 2.0 × 10-5 mol L-1 for SDM, with a detection limit of 4.0 × 10-8 mol L-1. The sensor was applied to the determination of SDM in aquaculture water samples successfully, with the recoveries ranging from 95% to 106%. Conclusion: The proposed sensor exhibited a high degree of selectivity for SDM in comparison to other structurally similar molecules, along with long-term stability, good reproducibility and excellent regeneration capacity. The sensor may offer a feasible strategy for the analysis of SDM in aquaculture water samples.

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