Studies on the heterogeneous electron transport and oxygen reduction reaction at metal (Co, Fe) octabutylsulphonylphthalocyanines supported on multi-walled carbon nanotube modified graphite electrode
Studies on the heterogeneous electron transport and oxygen reduction reaction at metal (Co, Fe) octabutylsulphonylphthalocyanines supported on multi-walled carbon nanotube modified graphite electrode
Heterogeneous electron transfer dynamics and oxygen reduction reaction (ORR) activities using octabutylsulphonylphthalocyanine complexes of iron (FeOBSPc) and cobalt (CoOBSPc) supported on multi-walled carbon nanotube (MWCNT) platforms have been described. The MWCNT-based electrodes (MWCNT–CoOBSPc and MWCNT–FeOBSPc) showed larger Faradaic current responses than the electrodes without the MWCNTs, interpreted as a consequence of the trapped electrolyte species within the porous layers of MWCNTs undergoing a redox process. The EPPGE–MWCNT–FeOBSPc showed onset potential (-0.01V vs Ag|AgCl) which is comparable and even much lower than recent reports. The MWCNT–FeOBSPc showed the best ORR activity involving a direct 4-electron mechanism, with a Tafel slope of about 124 mV, indicating a 1-electron process in the rate-determining step.
Reference:
Mamuru, SA, Ozoemena, KI, Fukuda, T, Kobayashi, N and Nyokong, T. 2010. Studies on the heterogeneous electron transport and oxygen reduction reaction at metal (Co, Fe) octabutylsulphonylphthalocyanines supported on multi-walled carbon nanotube modified graphite electrode. Electrochimica Acta, vol. 55(22), pp 6367-6375
Mamuru, S., Ozoemena, K., Fukuda, T., Kobayashi, N., & Nyokong, T. (2010). Studies on the heterogeneous electron transport and oxygen reduction reaction at metal (Co, Fe) octabutylsulphonylphthalocyanines supported on multi-walled carbon nanotube modified graphite electrode. http://hdl.handle.net/10204/5706
Mamuru, SA, KI Ozoemena, T Fukuda, N Kobayashi, and T Nyokong "Studies on the heterogeneous electron transport and oxygen reduction reaction at metal (Co, Fe) octabutylsulphonylphthalocyanines supported on multi-walled carbon nanotube modified graphite electrode." (2010) http://hdl.handle.net/10204/5706
Mamuru S, Ozoemena K, Fukuda T, Kobayashi N, Nyokong T. Studies on the heterogeneous electron transport and oxygen reduction reaction at metal (Co, Fe) octabutylsulphonylphthalocyanines supported on multi-walled carbon nanotube modified graphite electrode. 2010; http://hdl.handle.net/10204/5706.
Copyright: 2010 Elsevier. This is an ABSTRACT ONLY. The definitive version is published in Electrochimica Acta, vol. 55(22), pp 6367-6375, doi:10.1016/j.electacta.2010.06.056