Rapid Detection of Nitrofuran and Its Metabolites by Using Carboxylic Multi-walled Carbon Nanotubes Modified Glassy Carbon Electrode

2018 ◽  
pp. 4171-4181 ◽  
Author(s):  
Baoshan He ◽  
Keyword(s):  
Carbon Nanotubes ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Rapid Detection ◽  
Carbon Electrode ◽  
Modified Glassy Carbon Electrode ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

scholarly journals Glucose Oxidase Immobilized on a Functional Polymer Modified Glassy Carbon Electrode and Its Molecule Recognition of Glucose

Polymers ◽  
2019 ◽  
Vol 11 (1) ◽  
pp. 115 ◽  
Author(s):  
Yan-Na Ning ◽  
Bao-Lin Xiao ◽  
Nan-Nan Niu ◽  
Ali Moosavi-Movahedi ◽  
Jun Hong
Keyword(s):  
Carbon Nanotubes ◽  
Electron Transfer ◽  
Glucose Oxidase ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Carbon Electrode ◽  
Modified Glassy Carbon Electrode ◽  
Functional Polymer ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

In the present study, a glucose oxidase (GluOx) direct electron transfer was realized on an aminated polyethylene glycol (mPEG), carboxylic acid functionalized multi-walled carbon nanotubes (fMWCNTs), and ionic liquid (IL) composite functional polymer modified glassy carbon electrode (GCE). The amino groups in PEG, carboxyl groups in multi-walled carbon nanotubes, and IL may have a better synergistic effect, thus more effectively adjust the hydrophobicity, stability, conductivity, and biocompatibility of the composite functional polymer film. The composite polymer membranes were characterized by cyclic voltammetry (CV), ultraviolet-visible (UV-Vis) spectrophotometer, fluorescence spectroscopy, electrochemical impedance spectroscopy (EIS), and transmission electron microscopy (TEM), respectively. In 50 mM, pH 7.0 phosphate buffer solution, the formal potential and heterogeneous electron transfer constant (ks) of GluOx on the composite functional polymer modified GCE were −0.27 V and 6.5 s−1, respectively. The modified electrode could recognize and detect glucose linearly in the range of 20 to 950 μM with a detection limit of 0.2 μM. The apparent Michaelis-Menten constant (Kmapp) of the modified electrode was 143 μM. The IL/mPEG-fMWCNTs functional polymer could preserve the conformational structure and catalytic activity of GluOx and lead to high sensitivity, stability, and selectivity of the biosensors for glucose recognition and detection.

Electropolymerization of ferulic acid on multi-walled carbon nanotubes modified glassy carbon electrode as a versatile platform for NADH, dopamine and epinephrine separate detection

2017 ◽  
Vol 133 ◽  
pp. 460-467 ◽  
Author(s):  
Leonardo Vieira da Silva ◽  
Cleylton Bezerra Lopes ◽  
Wilson Ceciliano da Silva ◽  
Yen Galdino de Paiva ◽  
Francisco de Assis dos Santos Silva ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Ferulic Acid ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Carbon Electrode ◽  
Modified Glassy Carbon Electrode ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

Bisphenol a electrochemical sensor based on multi-walled carbon nanotubes/polythiophene/Pt nanocomposites modified electrode

2016 ◽  
Vol 8 (16) ◽  
pp. 3333-3338 ◽  
Author(s):  
Jun Wan ◽  
Yuxiao Si ◽  
Chao Li ◽  
Kun Zhang
Keyword(s):  
Carbon Nanotubes ◽  
Bisphenol A ◽  
Electrochemical Sensor ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Carbon Electrode ◽  
Modified Glassy Carbon Electrode ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

A facile and eco-friendly electrochemical sensor based on a multi-walled carbon nanotubes/polythiophene/Pt nanocomposites-modified glassy carbon electrode for determination of bisphenol A (BPA) was constructed using the MWCNT/PTh/Pt nanocomposites to modify glassy carbon (GC).

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