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朱荣妹博士在 Small发表研究论文
发布日期:2019-03-21 浏览次数: 字号:[ ]

π-Conjugated Molecule Boosts Metal–Organic Frameworks as Efficient Oxygen Evolution Reaction Catalysts

Rongmei Zhu, Jiawei Ding, Yuxia Xu, Jinpeng Yang, Qiang Xu, and Huan Pang*

School of Chemistry and Chemical Engineering, Yangzhou University

 

    To improve the efficiency of water electrolysis, developing efficient oxygen evolution reaction (OER) electrocatalysis is extremely important due to its four-electron transfer dynamics. In this work, a π-conjugated molecule (2,3,6,7,10,11-hexahydroxytriphenylene, HHTP), which can accelerate the electron transfer, is coated directly on pristine ZIF-67, resulting in a composite named HHTP@ZIF-67, via a simple one-step solvothermal method. The obtained HHTP@ZIF-67 possesses a Brunauer–Emmett–Teller surface area of 2013.9 m2 g−1 and displays microporous behavior, which can provide enough active sites for OER. The double-layer capacitance of HHTP@ZIF-67 is also enhanced, corresponding to an enlarged electrochemical active surface area. HHTP@ZIF-67 presents a quite low overpotential of 238 mV at 10 mA cm−2 in 1.0 m KOH. This material synthesized via the simple coating strategy is promising in the application of energy conversion devices.


Small, 2018, 14, 1803576  IF: 9.598

链接:https://onlinelibrary.wiley.com/doi/full/10.1002/smll.201803576







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