Molecular Electrocatalysis for Oxygen Reduction by Cobalt Porphyrins Adsorbed at Liquid/Liquid Interfaces

Yükleniyor...
Küçük Resim

Tarih

2010

Dergi Başlığı

Dergi ISSN

Cilt Başlığı

Yayıncı

AMER CHEMICAL SOC

Erişim Hakkı

info:eu-repo/semantics/openAccess

Özet

Molecular electrocatalysis for oxygen reduction at a polarized water/1,2-dichloroethane (DCE) interface was studied, involving aqueous protons, ferrocene (Fc) in DCE and amphiphilic cobalt porphyrin catalysts adsorbed at the interface. The catalyst, (2,8,13,17-tetraethyl-3,7,12,18-tetramethyl-5-p-aminophenylporphyrin) cobalt(II) (CoAP), functions like conventional cobalt porphyrins, activating 02 via coordination by the formation of a superoxide structure. Furthermore, due to the hydrophilic nature of the aminophenyl group, CoAP has a strong affinity for the water/DCE interface as evidenced by lipophilicity mapping calculations and surface tension measurements, facilitating the protonation of the CoAP-O(2) complex and its reduction by ferrocene. The reaction is electrocatalytic as its rate depends on the applied Galvani potential difference between the two phases.

Açıklama

Anahtar Kelimeler

Kaynak

Journal of the American Chemical Society

WoS Q Değeri

Q1

Scopus Q Değeri

Q1

Cilt

132

Sayı

8

Künye

Su, B., Hatay, İ., Trojanek, A., Samec, Z., Khoury, T., Gros, C. P., Barbe, J. M., Daina, A., Carrupt, P. A., Girault, H. H., (2010). Molecular Electrocatalysis for Oxygen Reduction by Cobalt Porphyrins Adsorbed at Liquid/Liquid Interfaces. Journal of the American Chemical Society, 132(8), 2655-2662. doi: org/10.1021/ja908488s.