A review of iron and cobalt porphyrins, phthalocyanines and related complexes for electrochemical and photochemical reduction of carbon dioxide
Gerald F. Manbeck, Etsuko Fujita
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Abstract
This review summarizes research on the electrochemical and photochemical reduction of CO 2 using a variety of iron and cobalt porphyrins, phthalocyanines and related complexes. Metalloporphyrins and metallophthalocyanines are visible light absorbers with extremely large extinction coefficients. However, yields of photochemically-generated active catalysts for CO 2 reduction are typically low owing to the requirement of a second photoinduced electron. This requirement is not relevant to the case of electrochemical CO 2 reduction. Recent progress on efficient and stable electrochemical systems includes the use of FeTPP catalysts that have prepositioned phenyl OH groups in their second coordination spheres. This has led to remarkable progress in carrying out coupled proton-electron transfer reactions for CO 2 reduction. Such ground-breaking research has to be continued in order to produce renewable fuels in an economically feasible manner.
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- Journal
- Journal of Porphyrins and Phthalocyanines
- Year
- 2015