Journal article

Authors list: Abe, Toshiyuki; Imaya, Hiroshi; Yoshida, Tsukasa; Tokita, Sumio; Schlettwein, Derck; Woehrle, Dieter; Kaneko, Masao

Publication year: 1997

Pages: 315-321

Journal: Journal of Porphyrins and Phthalocyanines

Volume number: 1

Issue number: 4

ISSN: 1088-4246

Publisher: World Scientific Publishing

Abstract: 
Electrochemical CO(2) reduction was studied by using a graphite electrode coated with cobalt octacyanophthalocyanine (CoPc(CN)(8)) and dipped in an aqueous phase. The most active and selective CO(2) reduction was achieved at -1.20 V (vs Ag/AgCl) with the ratio of the produced CO/H(2) around 10 at pH 9.3. The electrocatalytic CO(2) reduction by CoPc(CN)(8) could be achieved at a more positive applied potential than non-substituted CoPc (CoPc), which can be ascribed to the relatively positive redox potential of CoPc(CN)(8). The catalytic mechanism of the CoPc(CN)(8) in a homogeneous system was investigated by an in situ potential-step chronoamperospectroscopy under argon and under CO(2) as well. In CoPc(CN)(8) the rate-determining step was an intermediate formation step, while in CoPc it was the second reduction of the complex. (C) 1997 by John Wiley & Sons, Ltd.

Harvard Citation style: Abe, T., Imaya, H., Yoshida, T., Tokita, S., Schlettwein, D., Woehrle, D., et al. (1997) Electrochemical CO2 Reduction Catalysed by Cobalt Octacyanophthalocyanine and its Mechanism, Journal of Porphyrins and Phthalocyanines, 1(4), pp. 315-321

APA Citation style: Abe, T., Imaya, H., Yoshida, T., Tokita, S., Schlettwein, D., Woehrle, D., & Kaneko, M. (1997). Electrochemical CO2 Reduction Catalysed by Cobalt Octacyanophthalocyanine and its Mechanism. Journal of Porphyrins and Phthalocyanines. 1(4), 315-321.