Method for synthesizing MOF oxygen evolution reaction catalyst by using deep eutectic solvothermal method

A technology of deep eutectic solvent and oxygen evolution reaction, which is applied in the direction of electrolysis components, electrodes, electrolysis process, etc., to reduce the difficulty of reaction, improve reaction efficiency, and reduce the effect of reaction vapor pressure and

Active Publication Date: 2021-08-06
山东鲁泰控股集团有限公司石墨烯高分子复合材料研发中心 +1
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Problems solved by technology

[0005] Aiming at the problems existing in the preparation of MOF oxygen evolution reaction catalysts by hydrothermal method in the prior art, the present invention provides a method for synthesizing MOF oxygen evolution reaction catalysts by deep eutectic solvothermal method to solve the above problems

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  • Method for synthesizing MOF oxygen evolution reaction catalyst by using deep eutectic solvothermal method
  • Method for synthesizing MOF oxygen evolution reaction catalyst by using deep eutectic solvothermal method
  • Method for synthesizing MOF oxygen evolution reaction catalyst by using deep eutectic solvothermal method

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Embodiment 1

[0035] (1) Add 120.2 g (2.0 mol) of ethylene glycol and 558.5 g (4.0 mol) of choline chloride into a beaker, mix and heat to 80 ° C, and make it melt into a clear transparent liquid to form a deep eutectic solvent;

[0036] (2) Add 0.5 g of nickel nitrate hexahydrate, 10.0 g of ammonium metavanadate and 8.0 g of phthalic acid to the deep eutectic solvent, and obtain the precursor after ultrasonic mixing;

[0037] (3) According to the method of step (1), configure the eutectic solution in addition, under the heating situation, add nickel nitrate hexahydrate 0.5g, ammonium metavanadate 10.0g, ammonium fluoride 0.8g and urea 10.0g in the eutectic solution g, ultrasonic dissolution; then put it into the reaction kettle, add nickel foam, so that the solution just soaks the nickel foam;

[0038] (4) Seal the reaction kettle, put it in a 150°C oven and heat it for 8 hours, take it out of the oven after the reaction is over, and let it cool naturally for 12 hours; take out the cooled ni...

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Abstract

The invention relates to a method for synthesizing an MOF oxygen evolution reaction catalyst by using a deep eutectic solvothermal method, and belongs to the technical field of fine chemical engineering. The method for synthesizing the MOF oxygen evolution reaction catalyst by using the deep eutectic solvent thermal method comprises the following steps: (1) preparing a deep eutectic solvent; (2) preparing a Ni < 0.8 > V < 0.2 > layered double hydroxide nano array on the foamed nickel; and (3) preparing a Ni < 0.8 > V < 0.2 >-MOF catalyst, wherein the reaction in the step (2) and the reaction in the step (3) are both carried out in the eutectic solvent. The invention adopts a simple and convenient method for preparing three-dimensional Ni0.8V0.2-MOF by using the deep eutectic solvothermal method. In the aspect of the synthesis method, the limitation of a traditional hydrothermal method is broken through, the eutectic solvent is used as a synthesis medium, the chemical pollution is reduced, and the solubility of reactants and the reaction efficiency are improved; and the reaction vapor pressure and the reaction difficulty are reduced.

Description

technical field [0001] The invention belongs to the technical field of fine chemicals, and in particular relates to a method for synthesizing an MOF oxygen evolution reaction catalyst by a deep eutectic solvothermal method. Background technique [0002] At present, due to the excessive consumption of fossil fuels, energy crisis and environmental pollution have become two major problems hindering development. Therefore, it is very important to explore a clean and pollution-free energy source. As a sustainable and clean energy, hydrogen is expected to replace traditional fossil fuels. Electrolysis of water provides us with an ideal route to produce pure hydrogen. However, the anodic reaction in electrolyzed water, namely the oxygen evolution reaction (OER), often involves multiple proton-coupled electron transfer steps, resulting in very slow reaction rates and high overpotentials. In recent years, noble metal catalysts (such as IrO 2 and RuO 2 ) is the most widely used a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B11/031C25B11/04C25B1/04
CPCC25B11/04C25B1/04Y02E60/36
Inventor 渠凤丽刘华伟王纲李奇冯继凡李进李乃朋
Owner 山东鲁泰控股集团有限公司石墨烯高分子复合材料研发中心
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