Noncovalent immobilization of Co()porphyrin through axial coordination as an enhanced electrocatalyst on carbon electrodes for oxygen reduction and evolution

Catalysis of fuel-producing reactions can be transferred from homogeneous solution to a surface via attachment of the molecular catalyst. A pyrene-pyridine hybrid ( Py-Py ) was used as an axial ligand to bridge Co( ii )tetraphenylporphyrin which was finally immobilized on carbon nanotubes via noncov...

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Bibliographic Details
Published in:New journal of chemistry 2020-03, Vol.44 (11), p.434-4345
Main Authors: Attatsi, Isaac Kwaku, Zhu, Weihua, Liang, Xu
Format: Article
Language:English
Subjects:
Carbon
Carbon nanotubes
Catalysis
Chemical evolution
Coordination
Glassy carbon
Immobilization
Oxygen
Reduction
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Summary:Catalysis of fuel-producing reactions can be transferred from homogeneous solution to a surface via attachment of the molecular catalyst. A pyrene-pyridine hybrid ( Py-Py ) was used as an axial ligand to bridge Co( ii )tetraphenylporphyrin which was finally immobilized on carbon nanotubes via noncovalent interactions and further deposited on glassy carbon. This noncovalent immobilization of Co( ii )porphyrin through axial coordination provides significantly enhanced electrochemically catalyzed oxygen reduction and oxygen evolution, illustrating a new insight into understanding surface catalysis. Noncovalent immobilization of Co( ii )porphyrin on carbon nanotubes through axial coordination provides significantly enhanced electrochemically catalyzed oxygen reduction and oxygen evolution.
ISSN:1144-0546
1369-9261
DOI:10.1039/c9nj02408e