SYNTHESIZING AND INVESTIGATING THE ELECTRICAL PROPERTIES OF CARBONIZED METAL–ORGANIC FRAMEWORKS

T. Tu, Huy Q. Tran, Huong D. T. Nguyen, Nhung Thi Tran, Tung T. Nguyen, Long H. Ngo
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Abstract

The iron-based metal–organic frame (Fe-MOF), VNU-20, and its carbonized analogues were synthesized. Subsequently, this material was investigated for electrical properties in comparison with the carbonized samples from other MOFs and ZIFs (such as ZIF-8, ZIF-67, MOF-199, MIL-53). The experiments showed the results with the reversible cyclic voltammetry (CV) curve characterized by the redox oxidation reactions of Fe(II)/Fe(III). Furthermore, the electrode composed of carbonized VNU-20 shows a comparable capacitance with that of carbonized ZIF-67, the highest capacitance material recorded up to date for the same class of materials. While further experiments need to be carried out for the optimization, initial analyzes show the promising result for further investigation and use of carbonized VNU-20 as the electrode material for electro-catalysis and the supercapacitor.
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合成和研究碳化金属有机框架的电学特性
我们合成了铁基金属有机框架(Fe-MOF)VNU-20 及其碳化类似物。随后,研究人员将这种材料与其他 MOF 和 ZIF(如 ZIF-8、ZIF-67、MOF-199 和 MIL-53)的碳化样品进行了电学特性比较。实验结果显示了以铁(II)/铁(III)氧化还原反应为特征的可逆循环伏安(CV)曲线。此外,由碳化 VNU-20 组成的电极显示出与碳化 ZIF-67 相当的电容,而碳化 ZIF-67 是迄今为止同类材料中电容最高的材料。虽然还需要进一步的实验来进行优化,但初步分析表明,碳化 VNU-20 作为电催化和超级电容器的电极材料,有望得到进一步的研究和应用。
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