| Autor: |
Bulbul, Amir Sohel, Rathour, Vikram, Ganesan, Vellaichamy, Sankar, Muniappan |
| Předmět: |
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| Zdroj: |
Chemical Communications; 3/21/2024, Vol. 60 Issue 23, p3146-3149, 4p |
| Abstrakt: |
Two π-extended cobalt porphyrins are synthesized and one of them is crystallographically characterized. The nanocomposites of nonplanar (curved) porphyrin immobilized multi-walled carbon nanotubes were thoroughly characterized spectroscopically and microscopically, showing ∼200 mV positive shift in the O2 reduction peak potential in aqueous media and ∼100 mV shift in the onset potential of the O2 reduction relative to the control meso-tetraphenylporphyrinatocobalt(II) nanocomposite. Both the π-extended cobalt porphyrin immobilized nanocomposites efficiently catalyze selective 4e−/4H+ O2 reduction under ambient conditions with excellent methanol tolerance and high stability due to effective π–π interactions, and could be an alternative for expensive Pt-based cathode materials in fuel cells. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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