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