Truxone based conductive metal-organic frameworks for oxygen reductive reaction
Truxone based conductive metal-organic frameworks for oxygen reductive reaction
复制标题
用于氧还原反应的 Truxone 导电金属有机框架
DOI：
10.1021/acs.jpcc.1c03418
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发表时间：
2021
影响因子：
3.7
通讯作者：
Chun Zhang
中科院分区：
文献类型：
--
作者：
Qian Zhao;Jiawei Jiang;Wei Zhao;Sheng-Hua Li;Wenbo Mi;Chun Zhang
二维导电多孔材料在电催化、电化学传感、电子器件等领域有着广泛的应用，本文通过C3 v对称配体2，3，7，8，12，13-六羟基truxone与铜离子的有效络合反应，制备了一种新型的具有Kagome晶格的导电金属有机骨架（MOF）材料。通过液-液界面聚合获得该π-d共轭骨架（truxone-Cu），其为有光泽的黑色粉末。它显示了半导体的典型特性，在30 °C时晶粒电导率高达4.0 mS cm-1。为了深入了解truxone-Cu MOF的导电行为，对其周期单元进行了密度泛函理论（DFT）计算，并给出了0.24 eV的小能隙。由于其良好的导电性和优异的氧化还原可逆性的两个truxone配体和金属中心，truxone-Cu MOF修饰电极被成功地应用于催化氧还原反应（ORR）。
Two-dimensional conductive porous materials have been used extensively in the fields of electrocatalysis, electrochemical sensing, electronic devices, and so on. Herein, a novel conductive metal–organic framework (MOF) with a Kagome lattice is prepared by the efficient complexation of aC3v-symmetric ligand 2,3,7,8,12,13-hexahydroxyl truxone and a copper ion. This π–d conjugated framework (truxone–Cu) is obtained as a shiny black powder by liquid–liquid interfacial polymerization. It shows the typical characteristics of a semiconductor with a grain conductivity of up to 4.0 mS cm–1at 30 °C. In order to obtain deep insight into the conduction behavior of the truxone–Cu MOF, density functional theory (DFT) calculations were performed on its periodic unit and give a small energy gap of 0.24 eV. Owing to its good electrical conductivity and the excellent redox reversibility of both the truxone ligand and the metal center, the truxone–Cu MOF-modified electrode was successfully applied to catalyze the oxygen reductive reaction (ORR).