Functionalized metal organic framework nano material, preparation method and application thereof

A technology of metal-organic frameworks and nanomaterials, which is applied in the field of functionalized metal-organic framework nanomaterials, preparation and application, can solve the problems of few studies on the influence of organic ligands on electrocatalytic performance, and achieve high electrocatalytic activity and stability , the effect of consistent frame structure

Active Publication Date: 2021-11-19
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few studies on the effect of organic ligands on the electrocatalytic performance

Method used

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  • Functionalized metal organic framework nano material, preparation method and application thereof
  • Functionalized metal organic framework nano material, preparation method and application thereof
  • Functionalized metal organic framework nano material, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The functionalized metal organic framework nanomaterial, the simplified structural formula of the functionalized metal organic framework nanomaterial is Fe-MOFs-X, X=NO 2 ; The specific structure is as follows:

[0042]

[0043] The preparation method of the functionalized metal organic framework nanomaterial comprises the following specific steps:

[0044] Step 1, dissolve 0.1mmol organic ligand 2-nitroterephthalic acid and 0.1mmol iron salt (iron salt is ferric chloride hexahydrate) in organic solvent (N,N-dimethylacetamide), organic The solid-to-liquid ratio of the ligand to the organic solvent is 1:1g / L, and the reaction product is obtained by heating at 150°C for 3h for hydrothermal reaction;

[0045]Step 2. Cool the reaction product obtained in step 1 to room temperature, filter it through an organic microporous membrane, wash the filtered product with deionized water and ethanol organic solvent in turn, and then dry to obtain the functionalized metal organic ...

Embodiment 2

[0047] The functionalized metal organic framework nanomaterial, the simplified structure of the functionalized metal organic framework nanomaterial is Fe-MOFs-X, X=NHCHO; the specific structure is as follows:

[0048]

[0049] The preparation method of the functionalized metal organic framework nanomaterial comprises the following specific steps:

[0050] Step 1. Dissolve 0.1 mmol of organic ligand 2-formylaminoterephthalic acid and 0.1 mmol of iron salt (iron salt is ferric chloride hexahydrate) in an organic solvent (N,N-dimethylacetamide), The solid-to-liquid ratio of the organic ligand to the organic solvent is 1:0.85g / L, and the reaction product is obtained by heating at 150°C for 3 hours for hydrothermal reaction;

[0051] Step 2. Cool the reaction product obtained in step 1 to room temperature, filter it through an organic microporous membrane, wash the filtered product with deionized water and ethanol organic solvent in turn, and then dry to obtain the functionalize...

Embodiment 3

[0071] The functionalized metal organic framework nanomaterial, the simplified structure of the functionalized metal organic framework nanomaterial is Fe-MOFs-X, X=NHCHO; the specific structure is as follows:

[0072]

[0073] The preparation method of the functionalized metal organic framework nanomaterial comprises the following specific steps:

[0074] Step 1. Dissolve 0.1 mmol of organic ligand 2-formylaminoterephthalic acid and 0.1 mmol of iron salt (iron salt is ferric chloride hexahydrate) in an organic solvent (N,N-dimethylacetamide), The solid-to-liquid ratio of the organic ligand to the organic solvent is 1:0.5g / L, and the reaction product is obtained by heating at 150°C for 5h for hydrothermal reaction;

[0075] Step 2. Cool the reaction product obtained in step 1 to room temperature, filter it through an organic microporous membrane, wash the filtered product with deionized water and ethanol organic solvent in turn, and then dry to obtain the functionalized meta...

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Abstract

The invention relates to a functionalized metal organic framework nano material, a preparation method and application thereof, and belongs to the technical field of OER electrocatalysts. The preparation method comprises the steps of dissolving 0.1 mmol of organic ligand 2-nitroterephthalic acid or 2-formylamino terephthalic acid and 0.1 mmol of ferric salt in an organic solvent, heating at the temperature of 130-180 DEG C for 2-5 hours, and carrying out hydrothermal reaction to obtain a reaction product; and cooling the obtained reaction product to room temperature, carrying out suction filtration by using an organic microfiltration membrane, washing the suction filtration material by using deionized water and an ethanol organic solvent in sequence, and then drying to obtain the functionalized metal organic framework nano material catalyst Fe-MOFs-X, wherein X=NO2 or NHCHO. According to the invention, nitro and formamido functional groups are introduced into the Fe-based metal organic framework (Fe-MOFs-X) catalyst, so that the Fe-MOFs-X catalyst prepared by the invention has relatively high oxygen evolution electrocatalytic activity and stability in an alkaline environment.

Description

technical field [0001] The invention relates to a functional metal-organic framework nanomaterial, a preparation method and an application thereof, and belongs to the technical field of OER electrocatalysts. Background technique [0002] At present, natural resources are limited, and it is more and more important to develop efficient, safe and sustainable clean energy. The development of renewable energy is considered a promising solution to alleviate the global energy crisis and the environmental hazards caused by chemical fuels. The oxygen evolution reaction (OER) is a central reaction process in several electrochemical energy conversion and storage systems, including water splitting and metal-air batteries. [0003] OER kinetics are sluggish, and efficient electrocatalysts are needed to overcome the kinetic barrier. Noble metal oxides (RuO 2 and IrO 2 ) has been demonstrated to have excellent OER activity, but its high cost and poor electrochemical stability limit its...

Claims

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Application Information

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IPC IPC(8): C08G83/00C25B1/04C25B11/031C25B11/085B82Y40/00
CPCC08G83/008C25B1/04C25B11/031C25B11/085B82Y40/00Y02E60/36
Inventor 胡觉张利波张呈旭戚强龙
Owner KUNMING UNIV OF SCI & TECH
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