Direct electron transfer of myoglobin in mesoporous silica KIT-6 modified on screen-printed electrode

2009 ◽  
Vol 142 (1) ◽  
pp. 267-272 ◽  
Author(s):  
Yuanjie Teng ◽  
Xianbo Wu ◽  
Qin Zhou ◽  
Chen Chen ◽  
Hongli Zhao ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Mesoporous Silica ◽  
Direct Electron Transfer ◽  
Screen Printed Electrode ◽  
Screen Printed

Direct electron transfer between cytochrome P450scc and gold nanoparticles on screen-printed rhodium–graphite electrodes

2005 ◽  
Vol 21 (1) ◽  
pp. 217-222 ◽  
Author(s):  
Victoria V. Shumyantseva ◽  
Sandro Carrara ◽  
Valter Bavastrello ◽  
D. Jason Riley ◽  
Tatiana V. Bulko ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Electron Transfer ◽  
Direct Electron Transfer ◽  
Graphite Electrodes ◽  
Cytochrome P450scc ◽  
Screen Printed

High-performance bioelectrocatalysts created by immobilization of an enzyme into carbon-coated composite membranes with nano-tailored structures

2017 ◽  
Vol 5 (38) ◽  
pp. 20244-20251 ◽  
Author(s):  
Tetsuji Itoh ◽  
Yuuta Shibuya ◽  
Akira Yamaguchi ◽  
Yasuto Hoshikawa ◽  
Osamu Tanaike ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Mesoporous Silica ◽  
Composite Membrane ◽  
High Performance ◽  
Direct Electron Transfer ◽  
Composite Membranes ◽  
Silica Nanotubes ◽  
Carbon Coated

We have achieved direct electron transfer between enzymes and electrodes through establishment of a regular enzyme array by encapsulation it in a carbon-coated composite membrane with mesoporous silica nanotubes (C/F127MST).

Direct Electron Transfer Observed for Peroxidase to Screen-Printed Graphite Electrodes

2001 ◽  
Vol 13 (8-9) ◽  
pp. 779-785 ◽  
Author(s):  
Jens T. Schumacher ◽  
Hans-Jürgen Hecht ◽  
Uwe Dengler ◽  
Joachim Reichelt ◽  
Ursula Bilitewski
Keyword(s):  
Electron Transfer ◽  
Direct Electron Transfer ◽  
Graphite Electrodes ◽  
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.

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