scholarly journals Mechanisms for the Direct Electron Transfer of Cytochrome c Induced by Multi-Walled Carbon Nanotubes

Sensors ◽  
2012 ◽  
Vol 12 (8) ◽  
pp. 10450-10462 ◽  
Author(s):  
Hua-Zhang Zhao ◽  
Qian Du ◽  
Zhen-Shan Li ◽  
Qin-Zheng Yang
Keyword(s):  
Carbon Nanotubes ◽  
Electron Transfer ◽  
Cytochrome C ◽  
Direct Electron Transfer ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

Direct Electron Transfer between Glucose Oxidase and Multi-walled Carbon Nanotubes

2010 ◽  
Vol 21 (8) ◽  
pp. 1088-1091 ◽  
Author(s):  
Xu Jin-Zhong ◽  
Zhu Jun-Jie ◽  
Wu Qiang ◽  
Hu Zheng ◽  
Chen Hong-Yuan
Keyword(s):  
Carbon Nanotubes ◽  
Electron Transfer ◽  
Glucose Oxidase ◽  
Direct Electron Transfer ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

Direct electron transfer between tyrosinase and multi-walled carbon nanotubes for bioelectrocatalytic oxygen reduction

2012 ◽  
Vol 20 ◽  
pp. 19-22 ◽  
Author(s):  
Bertrand Reuillard ◽  
Alan Le Goff ◽  
Charles Agnès ◽  
Abdelkader Zebda ◽  
Michael Holzinger ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Electron Transfer ◽  
Oxygen Reduction ◽  
Direct Electron Transfer ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

Anthracene-Modified Multi-Walled Carbon Nanotubes as Direct Electron Transfer Scaffolds for Enzymatic Oxygen Reduction

ACS Catalysis ◽  
2011 ◽  
Vol 1 (12) ◽  
pp. 1683-1690 ◽  
Author(s):  
Matthew T. Meredith ◽  
Michael Minson ◽  
David Hickey ◽  
Kateryna Artyushkova ◽  
Daniel T. Glatzhofer ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Electron Transfer ◽  
Oxygen Reduction ◽  
Direct Electron Transfer ◽  
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.

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