An electrochemically preanodized screen-printed carbon electrode for achieving direct electron transfer to glucose oxidase

2008 ◽  
Vol 10 (7) ◽  
pp. 1094-1097 ◽  
Author(s):  
Ting-Hao Yang ◽  
Chi-Lung Hung ◽  
Jyh-Harng Ke ◽  
Jyh-Myng Zen
Keyword(s):  
Electron Transfer ◽  
Glucose Oxidase ◽  
Direct Electron Transfer ◽  
Carbon Electrode ◽  
Screen Printed Carbon Electrode ◽  
Screen Printed

scholarly journals Development of Hydrogen Peroxide Biosensor Based on Immobilization of Hemoglobin on Screen-Printed Carbon Electrode Modified With Silver Nanoparticles

2019 ◽  
pp. 2332-2340
Author(s):  
Ali Saad Elewi ◽  
Shatha Abdul Wadood ◽  
Abdul Kareem Mohammed Ali
Keyword(s):  
Hydrogen Peroxide ◽  
Silver Nanoparticles ◽  
Electron Transfer ◽  
Direct Electron Transfer ◽  
Phosphate Buffer Solution ◽  
Carbon Electrode ◽  
Buffer Solution ◽  
Hydrogen Peroxide Biosensor ◽  
Screen Printed Carbon Electrode ◽  
Screen Printed

     The direct electron transfer behavior of hemoglobin that is immobilized onto screen-printed carbon electrode (SPCE) modified with silver nanoparticles (AgNPs) and chitosan (CS) was studied in this work. Cyclic voltametry and spectrophotometry were used to characterize the hemoglobin (Hb) bioconjunction with AgNPs and CS. Results of the modified electrode showed quasi-reversible redox peaks with a formal potential of (-0.245V) versus Ag/AgCl in 0.1M phosphate buffer solution (PBS), pH7, at a scan rate of 0.1Vs-1. The charge transfer coefficient (α) was 0.48 and the apparent electron transfer rate constant (Ks) was 0.47s-1. The electrode was used as a hydrogen peroxide biosensor with a linear response over 3 to 240 µM and a detection limit of 0.6 µM. As a result, the modified biosensor here has exhibited a high sensitivity, good reproducibility and stability.

Direct electrochemistry of glucose oxidase and sensing glucose using a screen-printed carbon electrode modified with graphite nanosheets and zinc oxide nanoparticles

2014 ◽  
Vol 181 (15-16) ◽  
pp. 1843-1850 ◽  
Author(s):  
Chelladurai Karuppiah ◽  
Selvakumar Palanisamy ◽  
Shen-Ming Chen ◽  
Vediyappan Veeramani ◽  
Prakash Periakaruppan
Keyword(s):  
Zinc Oxide ◽  
Glucose Oxidase ◽  
Zinc Oxide Nanoparticles ◽  
Direct Electrochemistry ◽  
Oxide Nanoparticles ◽  
Carbon Electrode ◽  
Graphite Nanosheets ◽  
Screen Printed Carbon Electrode ◽  
Screen Printed

Direct electron transfer from glucose oxidase immobilized on polyphenanthroline-modified glassy carbon electrode

2011 ◽  
Vol 26 (5) ◽  
pp. 2541-2546 ◽  
Author(s):  
Yasemin Oztekin ◽  
Almira Ramanaviciene ◽  
Zafer Yazicigil ◽  
Ali Osman Solak ◽  
Arunas Ramanavicius
Keyword(s):  
Electron Transfer ◽  
Glucose Oxidase ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Direct Electron Transfer ◽  
Carbon Electrode ◽  
Modified Glassy Carbon Electrode

Direct electron transfer and electrocatalysis of glucose oxidase immobilized on glassy carbon electrode modified with Nafion and mesoporous carbon FDU-15

2009 ◽  
Vol 54 (20) ◽  
pp. 4626-4630 ◽  
Author(s):  
Kunqi Wang ◽  
Hua Yang ◽  
Lin Zhu ◽  
Zhongsu Ma ◽  
Shenyang Xing ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Glucose Oxidase ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Mesoporous Carbon ◽  
Direct Electron Transfer ◽  
Carbon Electrode

Direct electron transfer from glucose oxidase immobilized on a nano-porous glassy carbon electrode

2011 ◽  
Vol 56 (27) ◽  
pp. 10101-10106 ◽  
Author(s):  
Behzad Haghighi ◽  
Mahmoud Amouzadeh Tabrizi
Keyword(s):  
Electron Transfer ◽  
Glucose Oxidase ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Direct Electron Transfer ◽  
Carbon Electrode
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