期刊
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
卷 17, 期 29, 页码 19538-19545出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5cp02853a
关键词
-
资金
- National Basic Research Program of China (973 Program) [2012CB933402, 2013CB933001]
- Natural Science Foundation of China [51433005]
Graphene oxide frameworks (GOFs) have attracted a great deal of attention because of their unique functional building blocks, and tunable structures and properties. Herein, a series of porphyrin-based GOFs with crystalline lamellar structures were synthesized via esterification between boronic acid groups of porphyrins and hydroxyl groups of GO sheets. These GOFs have ultra-large d-spacings of up to 26.0 angstrom, and they were reduced by facile electrochemical reduction. The resulting reduced GOFs (rGOFs) can be used as catalysts for oxygen reduction reaction (ORR). Electrochemical reduction improved the conductivities of GOFs, accelerating the charge transfer of ORR. The rGOF with Co-porphyrin showed the most positive onset potential of ORR at 0.89 V (vs. RHE, reversible hydrogen electrode), while the rGOF with Fe-porphyrin exhibited the highest catalytic efficiency through an approximately four-electron process. This study provides a new insight for the development of GOFs using multi-functional macrocyclic molecules, revealing their promising applications in electrocatalysts.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据