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UV-11金属有机框架材料的合成及其循环伏安法表征

Synthesis of UV-11 MOF and Its Characterization by Cyclic Voltammetry.

作者信息

Meza-Pardo Ingrid Guadalupe, Morales-Tapia Alfredo A, Veloz Rodríguez María Aurora, Reyes-Cruz Victor Esteban, Perez-Labra Miguel, Urbano-Reyes Gustavo, Rivera-Villanueva José María, Cobos-Murcia Jose Angel

机构信息

Laboratory Electrochemistry Process, Institute of Basic Sciences and Engineering, Academic Area of Earth Sciences and Materials, Autonomous University of the State of Hidalgo, Pachuca, Mexico.

LADISER Organic Chemistry, Faculty of Chemical Sciences, Universidad Veracruzana, Orizaba, Mexico.

出版信息

Front Chem. 2020 Aug 4;8:617. doi: 10.3389/fchem.2020.00617. eCollection 2020.

DOI:10.3389/fchem.2020.00617
PMID:32903784
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7438935/
Abstract

In this work a Metal-Organic Framework (MOF) was prepared using a solvothermal method, taking as precursors 1. 2-di-(4-pyridyl)-ethylene, 1.2.4.5-benzenetetracarboxylic acid and Co(No)-6HO. This MOF was called UV-11 and was evaluated using microscopic, spectroscopic and electrochemical techniques. According to the obtained results, the melting point of the compound is located in a higher interval than its precursors. Stereoscopic microscopy analysis shows the presence of pink crystals in the form of needles. MEB technique displays a laminar morphology as well as crystals with approximate sizes (36 mm wide and 150 mm long). EDS analysis corroborated the presence of precursor elements such as cobalt, carbon and oxygen. Furthermore, the XRD technique shows the cobalt-related phases in the sample, which is cobalt bis (pyridine-6-carboxylic-2-carboxylate). A modified carbon paste electrode was prepared using MOF UV-11 and by cyclic voltammetry electrochemical technique, semi-reversible redox processes are identified, as well as thermodynamic and kinetic parameters were obtained with the Laviron equation, and electrochemical performance properties from the cyclic voltammetry experimental data.

摘要

在这项工作中，采用溶剂热法制备了一种金属有机框架（MOF），以1,2 - 二（4 - 吡啶基）乙烯、1,2,4,5 - 苯四羧酸和Co(NO₃)₂·6H₂O作为前驱体。这种MOF被称为UV - 11，并使用显微镜、光谱和电化学技术进行了评估。根据所得结果，该化合物的熔点位于比其前驱体更高的区间。立体显微镜分析显示存在针状粉红色晶体。扫描电子显微镜（MEB）技术显示出层状形态以及尺寸近似（宽36μm和长150μm）的晶体。能谱分析（EDS）证实了钴、碳和氧等前驱体元素的存在。此外，X射线衍射（XRD）技术显示样品中存在与钴相关的相，即双（吡啶 - 6 - 羧酸 - 2 - 羧酸）钴。使用MOF UV - 11制备了修饰碳糊电极，并通过循环伏安电化学技术，识别出了半可逆氧化还原过程，还通过拉维隆方程获得了热力学和动力学参数，以及从循环伏安实验数据得到的电化学性能特性。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/03c9/7438935/60054c40a089/fchem-08-00617-g0009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/03c9/7438935/bb02909157cd/fchem-08-00617-g0001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/03c9/7438935/288336193c83/fchem-08-00617-g0002.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/03c9/7438935/4b798c1e5213/fchem-08-00617-g0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/03c9/7438935/234044326abb/fchem-08-00617-g0006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/03c9/7438935/566f132d6c61/fchem-08-00617-g0007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/03c9/7438935/08c170119ee2/fchem-08-00617-g0008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/03c9/7438935/60054c40a089/fchem-08-00617-g0009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/03c9/7438935/bb02909157cd/fchem-08-00617-g0001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/03c9/7438935/288336193c83/fchem-08-00617-g0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/03c9/7438935/6173a5e69198/fchem-08-00617-g0003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/03c9/7438935/2c8ae58e0724/fchem-08-00617-g0004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/03c9/7438935/4b798c1e5213/fchem-08-00617-g0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/03c9/7438935/234044326abb/fchem-08-00617-g0006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/03c9/7438935/566f132d6c61/fchem-08-00617-g0007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/03c9/7438935/08c170119ee2/fchem-08-00617-g0008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/03c9/7438935/60054c40a089/fchem-08-00617-g0009.jpg

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