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Fully Oriented Bilirubin Oxidase on Porphyrin-Functionalized Carbon Nanotube Electrodes for Electrocatalytic Oxygen Reduction
- Source :
- Chemistry-A European Journal, Chemistry-A European Journal, Wiley-VCH Verlag, 2015, 21 (47), pp.16868-16873. ⟨10.1002/chem.201502377⟩
- Publication Year :
- 2015
- Publisher :
- HAL CCSD, 2015.
-
Abstract
- The efficient immobilization and orientation of bilirubin oxidase from Myrothecium verrucaria on multi-walled carbon nanotube electrodes by using π-stacked porphyrins as a direct electron-transfer promoter is reported. By comparing the use of different types of porphyrin, the rational effect of the porphyrin structure on both the immobilization and orientation of the enzyme is demonstrated. The best performances were obtained for protoporphyrin IX, which is the natural precursor of bilirubin. These electrodes exhibit full orientation of the enzyme, as confirmed by the observable non-catalytic redox system corresponding to the T1 copper center associated with pure Nernstian electrocatalytic behavior with high catalytic currents of almost 5 mA cm(-2) at neutral pH.
- Subjects :
- Oxidoreductases Acting on CH-CH Group Donors
Porphyrins
Inorganic chemistry
chemistry.chemical_element
02 engineering and technology
Carbon nanotube
010402 general chemistry
Electrochemistry
01 natural sciences
Redox
Catalysis
law.invention
Electron Transport
chemistry.chemical_compound
law
[CHIM]Chemical Sciences
Bilirubin oxidase
Electrodes
ComputingMilieux_MISCELLANEOUS
Protoporphyrin IX
Nanotubes, Carbon
Organic Chemistry
General Chemistry
Hydrogen-Ion Concentration
Enzymes, Immobilized
021001 nanoscience & nanotechnology
Porphyrin
Copper
0104 chemical sciences
chemistry
Biocatalysis
0210 nano-technology
Oxidation-Reduction
Subjects
Details
- Language :
- English
- ISSN :
- 09476539 and 15213765
- Database :
- OpenAIRE
- Journal :
- Chemistry-A European Journal, Chemistry-A European Journal, Wiley-VCH Verlag, 2015, 21 (47), pp.16868-16873. ⟨10.1002/chem.201502377⟩
- Accession number :
- edsair.doi.dedup.....9b0745096abc83768ac1ef601cd1164e
- Full Text :
- https://doi.org/10.1002/chem.201502377⟩