COFs anodic oxygen evolution electrocatalysis material based on non-noble metalloporphyrin

An electrocatalytic material, non-precious metal technology, applied in the field of chemistry, can solve the problems of destroying the topological structure properties of COFs materials, increasing the energy consumption of the production process, unfavorable for large-scale production applications, etc., to achieve high catalytic activity and stability, and reasonable structure. , the effect of high conductivity

Inactive Publication Date: 2019-12-31
WEIFANG UNIVERSITY
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  • Application Information

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Problems solved by technology

High-temperature pyrolysis will destroy the topological structure of COFs materials and the properties of the materials themselves, and lose the advantages of regular structure, uniform pores and easy functionalization of COFs materials
In addition, high-temperature pyrolysis increases the energy consumption of the production process, which is not conducive to large-scale production applications.

Method used

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Embodiment Construction

[0013] The present invention will be further described below:

[0014] The present invention comprises the following steps:

[0015] (3) The non-noble metal Fe with electrocatalytic properties 2+ , Fe 3+ ,Co 2+ , Ni 2+ , Cu 2+ , Mn 2+ Introduce into the center of porphyrin to synthesize multiple metalloporphyrin complexes containing different functional groups and central metals;

[0016] (4) Modifying 5% of the aromatic alkenes / alkynes, amino groups, and borate groups at the meso position of porphyrin or more than two functional groups that are conducive to coupling reactions in order to further construct COFs porous materials;

[0017] (3) Using the "bottom-up" synthesis strategy, the above-mentioned porphyrin complex molecules are polymerized through coupling reactions such as heck and suzuki, or the above-mentioned metals Porphyrin ligands are connected in order to obtain COFs porous materials with adjustable pore structure, good stability and conductivity, and larg...

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Abstract

The invention discloses a COFs anodic oxygen evolution electrocatalysis material based on non-noble metalloporphyrin. The easy cutting characteristic of porphyrin molecules is used to construct a metalloporphyrin-based COFs porous material with a reasonable structure, an ordered long range, a high specific surface area, a high conductivity and a high catalytic active site density, so the anodic oxygen evolution electrocatalyst with economic valuse, high catalytic activity and high stability is obtained. The clear structure of a COFs material is combined to discuss the characteristics of a porphyrin ligand and the synergistic regulation and control action mechanism of the porphyrin ligand and a metal active center, so a research model of factors such as the porphyrin ligand, metal ions anda frame structure on electrocatalytic oxygen evolution is established, and the anodic oxygen evolution electrocatalysis mechanism based on the porphyrin COFs material is clarified.

Description

technical field [0001] The invention relates to the field of chemical technology, in particular to a COFs anode oxygen evolution electrocatalytic material based on non-noble metal porphyrin. Background technique [0002] As a class of highly conjugated planar macrocyclic ligands, porphyrin has a highly delocalized π-electron structure, diversity in molecular structure, ease of tailoring, variety of complexed metal atoms and its sensitivity to light and heat. High stability and other characteristics. Therefore, metalloporphyrin complexes are used as molecular building blocks to construct porous and networked COFs materials, which have the advantages of large specific surface area and dispersed catalytic active sites, and have attracted extensive attention in the field of catalysis. In the prior art, high-temperature pyrolysis is used to improve the electrocatalytic activity of materials. High-temperature pyrolysis will destroy the topological structure of COFs materials and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/22B01J35/00
CPCB01J31/183B01J31/1691B01J35/0033B01J2531/025B01J2531/16B01J2531/842B01J2531/845B01J2531/847B01J2531/72
Inventor 逯纪涛杨国涛曾岳
Owner WEIFANG UNIVERSITY
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