Ge Kai, Sun Shujuan, Zhao Yi, Yang Kai, Wang Shuang, Zhang Zhiheng, Cao Jiayu, Yang Yongfang, Zhang Yue, Pan Mingwang, Zhu Lei
Institute of Polymer Science and Engineering, Hebei Key Laboratory of Functional Polymers, Hebei University of Technology, Tianjin, 300130, P. R. China.
Department of Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, OH, 44106-7202, USA.
Angew Chem Int Ed Engl. 2021 May 17;60(21):12097-12102. doi: 10.1002/anie.202102632. Epub 2021 Apr 16.
A facile synthesis is reported of two-dimensional (2D) bimetallic (Fe/Co=1:2) metal-organic frameworks (MOF, ca. 2.2 nm thick) via simple stirring of the reaction mixture of Fe/Co salts and 1,4-benzene dicarboxylic acid (1,4-BDC) in the presence of triethylamine and water at room temperature. The mechanism of the 2D, rather than bulk, MOF was revealed by studying the role of each component in the reaction mixture. It was found that these 2D MOF-Fe/Co(1:2) exhibited excellent electrocatalytic activity for the oxygen evolution reaction (OER) under basic conditions. The electrocatalytic mechanism was disclosed via both experimental results and density functional theory (DFT) calculation. The 2D morphology and co-doping of Fe/Co contributed to the superior OER performance of the 2D MOF-Fe/Co(1:2). The simple and efficient synthetic method is suitable for the mass production and future commercialization of functional 2D MOF with low cost and high yield.
据报道，通过在室温下，在三乙胺和水存在的条件下，简单搅拌铁/钴盐与1,4-苯二甲酸（1,4-BDC）的反应混合物，可简便合成二维（2D）双金属（Fe/Co = 1:2）金属有机框架（MOF，约2.2 nm厚）。通过研究反应混合物中各组分的作用，揭示了二维而非块状MOF的形成机制。研究发现，这些二维MOF-Fe/Co(1:2)在碱性条件下对析氧反应（OER）表现出优异的电催化活性。通过实验结果和密度泛函理论（DFT）计算揭示了电催化机制。二维形态以及铁/钴的共掺杂促成了二维MOF-Fe/Co(1:2)优异的析氧反应性能。这种简单高效的合成方法适用于低成本、高产量地大规模生产功能性二维MOF及其未来商业化。
