Carbon-supported transition-metal phthalocyanines

Magdesieva, T.V., T. Yamamoto, D.A. Tryk, and A. Fujishima (2002). Electrochemical reduction of CO2 with transition metal phthalocyanine and porphyrin complexes supported on activated carbon fibers. J. Electrochem. Soc. 149(6), D89-D95. Atoguchi, T., A. Aramata, A. Kazusaka, and M. Enyo (1991). Cobalt (II)-tetraphenylporphyrin-pyridine complex fixed on a glassy carbon electrode and its prominent catalytic activity for reduction of carbon dioxide. J. Chem. Soc. Chem. Commun. 13, 156-157. 

Magdesieva, T.V., T. Yamamoto, D.A. Tryk, and A. Fujishima (2002). Electrochemical reduction of CO2 with transition metal phthalocyanine and porphyrin complexes supported on activated carbon fibers. J. Electrochem. Soc. 149(6), D89-D95. 

Again, alternatives for Pt (-alloys) are not available (in acid), although there has been an active search for them. For a time, transition metal porphyrins and phthalocyanins supported on carbon were thought to be promising candidates, where their use was motivated by nature s use of metalloporphyrins for oxygen activation. The catalytic action of these chelates can be described in terms of the following mechanism ... 

On the other hand, phthalocyanines and porphyrins transition metal complexes have been adsorbed on activated carbon fiber nanopouros support in the form of gas diffusion electrodes The loading of the complexes in the support involve the dissolution of the macrocycles in the proper solvent and then the addition of the (activated carbon fibers ACF). The mixtures were stirred on a magnetic stirrer for 3-4 days at room temperature and then vacuum filtered. The ACF with... 

Research has been conducted on many metals including Fe, Co, Mn and Pb in order to find an adequate replacement for Pt. Cobalt and iron have attracted the most attention. These two metals are typically combined with tetramethoxyphenylporphyrin (TMPP) or phthalocyanine (Pc) to form metal macrocyclic complexes. Pyrolyzed FePc and CoTMPP complexes have proven the most effective transition metal-based materials. FePc supported on Ketjen black carbon generated a power density of 634 mW m compared to 593 mW produced by a Pt cathode in the same... 

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