Electrocatalytically Active Graphene–Porphyrin MOF Composite for Oxygen Reduction Reaction,Journal of the American Chemical Society

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Electrocatalytically Active Graphene–Porphyrin MOF Composite for Oxygen Reduction Reaction
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2012-04-03 , DOI: 10.1021/ja211433h
Maryam Jahan ₁ , Qiaoliang Bao ₁ , Kian Ping Loh ₁

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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.

中文翻译：

用于氧还原反应的电催化活性石墨烯-卟啉 MOF 复合材料

吡啶官能化石墨烯（还原氧化石墨烯）可用作金属有机框架 (MOF) 组装中的构建块。通过将吡啶官能化石墨烯与铁卟啉反应，合成了一种对氧还原反应 (ORR) 具有增强催化活性的石墨烯-金属卟啉 MOF。研究了混合 MOF 的结构和电化学性质，作为添加到铁 - 卟啉框架中的官能化石墨烯的重量百分比的函数。结果表明，吡啶官能化石墨烯的加入改变了MOF中铁卟啉的结晶过程，增加了其孔隙率，提高了铁卟啉的电化学电荷转移速率。

更新日期：2012-04-03

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