A Sensing Platform for Direct Electron Transfer Study of Horseradish Peroxidase

2013 ◽  
Vol 160 (9) ◽  
pp. H573-H580 ◽  
Author(s):  
S. Farzana ◽  
V. Ganesh ◽  
Sheela Berchmans
Keyword(s):  
Electron Transfer ◽  
Horseradish Peroxidase ◽  
Direct Electron Transfer ◽  
Sensing Platform ◽  
Transfer Study

The Electrochemical Biosensor Based on the Immobilization of Horseradish Peroxidase on TiO2 Nanoneedles Modified Electrodes

2011 ◽  
Vol 239-242 ◽  
pp. 2499-2502
Author(s):  
Nan Nan Wei ◽  
Jiang Yan Du
Keyword(s):  
Horseradish Peroxidase ◽  
Modified Electrode ◽  
Electrochemical Biosensor ◽  
Signal To Noise Ratio ◽  
Direct Electron Transfer ◽  
Modified Electrodes ◽  
Signal To Noise ◽  
Formal Potential ◽  
Amperometric Response ◽  
Transfer Study

A new electrochemical biosensor based on the immobilization of horseradish peroxidase(HRP) on TiO2 nanoneedles modified electrodes has been fabricated. The direct electrochemical response of HRP immobilized on the modified electrode was dramatically enhanced. The immobilized HRP displayed a couple of stable and well-defined redox peaks with a formal potential of -0.379 V (vs. SCE). The HRP/TiO2 nanoneedles modified electrode exhibited a remarkable electrocatalytic activity toward the oxidation of H2O2. The amperometric response to H2O2 showed a linear range of 4–700μmol/L, with the calculated detection limit of 0.78 μmol/L at a signal-to-noise ratio of three. The modified electrode displayed an acceptable reproducibility and good stability. The new HRP/TiO2 nanoneedles matrix is expected to have wide applications for enzymes and proteins immobilization and direct electron transfer study and opened a way for low conductivity electrode biosensors.

A direct electron transfer biosensor based on a horseradish peroxidase and gold nanotriangle modified electrode and electrocatalysis

2018 ◽  
Vol 10 (44) ◽  
pp. 5297-5304 ◽  
Author(s):  
Yanyan Niu ◽  
Juan Liu ◽  
Wei Chen ◽  
Chunxiao Yin ◽  
Wenju Weng ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Ionic Liquid ◽  
Horseradish Peroxidase ◽  
Modified Electrode ◽  
Direct Electron Transfer ◽  
Direct Electrochemistry ◽  
Carbon Ionic Liquid Electrode ◽  
Liquid Electrode ◽  
Gold Nanotriangles

Gold nanotriangles (AuNTs) were used as a modifier on the surface of a carbon ionic liquid electrode (CILE), which was applied to realize direct electrochemistry and electrocatalysis of horseradish peroxidase (HRP).

Direct electron transfer of horseradish peroxidase on Nafion-cysteine modified gold electrode

2007 ◽  
Vol 52 (21) ◽  
pp. 6261-6267 ◽  
Author(s):  
Jun Hong ◽  
Ali Akbar Moosavi-Movahedi ◽  
Hedayatollah Ghourchian ◽  
Ahmad Molaei Rad ◽  
Saeed Rezaei-Zarchi
Keyword(s):  
Electron Transfer ◽  
Horseradish Peroxidase ◽  
Gold Electrode ◽  
Direct Electron Transfer
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