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|Title:||Electrocatalytically active graphene-porphyrin MOF composite for oxygen reduction reaction||Authors:||Jahan, M.
|Issue Date:||18-Apr-2012||Citation:||Jahan, M., Bao, Q., Loh, K.P. (2012-04-18). Electrocatalytically active graphene-porphyrin MOF composite for oxygen reduction reaction. Journal of the American Chemical Society 134 (15) : 6707-6713. ScholarBank@NUS Repository. https://doi.org/10.1021/ja211433h||Abstract:||Pyridine-functionalized graphene (reduced graphene oxide) can be used as a building block in the assembly of metal organic framework (MOF). By reacting the pyridine-functionalized graphene with iron-porphyrin, a graphene- metalloporphyrin MOF with enhanced catalytic activity for oxygen reduction reactions (ORR) is synthesized. The structure and electrochemical property of the hybrid MOF are investigated as a function of the weight percentage of the functionalized graphene added to the iron-porphyrin framework. The results show that the addition of pyridine-functionalized graphene changes the crystallization process of iron-porphyrin in the MOF, increases its porosity, and enhances the electrochemical charge transfer rate of iron-porphyrin. The graphene-metalloporphyrin hybrid shows facile 4-electron ORR and can be used as a promising Pt-free cathode in alkaline Direct Methanol Fuel Cell. © 2012 American Chemical Society.||Source Title:||Journal of the American Chemical Society||URI:||http://scholarbank.nus.edu.sg/handle/10635/76048||ISSN:||00027863||DOI:||10.1021/ja211433h|
|Appears in Collections:||Staff Publications|
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