Nickel-iron double hydroxide/foamed nickel catalyst based on ferric chloride/urea eutectic solvent, and preparation method and application thereof

A technology of deep eutectic solvent and hydroxide, which is applied in the direction of metal/metal oxide/metal hydroxide catalyst, catalyst activation/preparation, physical/chemical process catalyst, etc., to achieve short preparation cycle, cheap and easy-to-obtain raw materials, The effect of simple operation process

Active Publication Date: 2019-09-06
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no report on the preparation of nickel-iron double metal hydroxide (NiFe-LDH) using deep eutectic solvents.

Method used

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  • Nickel-iron double hydroxide/foamed nickel catalyst based on ferric chloride/urea eutectic solvent, and preparation method and application thereof
  • Nickel-iron double hydroxide/foamed nickel catalyst based on ferric chloride/urea eutectic solvent, and preparation method and application thereof
  • Nickel-iron double hydroxide/foamed nickel catalyst based on ferric chloride/urea eutectic solvent, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A kind of preparation method of the nickel-iron double metal hydroxide / foam nickel catalyst based on iron trichloride / urea deep eutectic solvent, comprises steps:

[0043] (1) Synthesis of deep eutectic solvent: Mix ferric chloride hexahydrate and urea at a molar ratio of 2:1, then heat in an oil bath at 60°C for 30 minutes to obtain a reddish-brown liquid with high viscosity, After cooling to room temperature, the ferric chloride hexahydrate / urea deep eutectic solvent was successfully synthesized.

[0044] (2) Pretreatment of foamed nickel: cut the foamed nickel into a size of 1*1cm 2 The square was then ultrasonically treated with 1 mol / L hydrochloric acid for 10 minutes, and then ultrasonicated with water and ethanol for 10 minutes to remove oxides and impurities on the surface. Finally, vacuum-dry at room temperature for 12 hours to obtain pure foamed nickel.

[0045] (3) Preparation of NiFe-LDH / nickel foam catalyst: soak the pure nickel foam above in the deep eut...

Embodiment 2

[0061] A kind of preparation method of the nickel-iron double metal hydroxide / foam nickel catalyst based on iron trichloride / urea deep eutectic solvent, comprises steps:

[0062] (1) Synthesis of deep eutectic solvent: Mix ferric chloride hexahydrate and urea at a molar ratio of 1:1, then heat in an oil bath at 60°C for 30 minutes to obtain a reddish-brown liquid with high viscosity, After cooling to room temperature, the ferric chloride hexahydrate / urea deep eutectic solvent was successfully synthesized.

[0063] (2) Pretreatment of foamed nickel: cut the foamed nickel into 0.5*0.5cm 2 square, subsequent processing steps and conditions are as described in Example 1 to obtain pure foamed nickel.

[0064] (3) Preparation of NiFe-LDH / nickel foam catalyst: soak the pure nickel foam above in the deep eutectic solvent obtained in step (1), and react at 40° C. for 10 s. Then take out the foamed nickel (NiFe-LDH is supported on the surface of the foamed nickel), wash with ethanol a...

Embodiment 3

[0066] A kind of preparation method of the nickel-iron double metal hydroxide / foam nickel catalyst based on iron trichloride / urea deep eutectic solvent, comprises steps:

[0067] (1) Synthesis of deep eutectic solvent: Mix ferric chloride hexahydrate and urea at a molar ratio of 3:1, then heat in an oil bath at 60°C for 30 minutes to obtain a reddish-brown liquid with high viscosity, After cooling to room temperature, the ferric chloride hexahydrate / urea deep eutectic solvent was successfully synthesized.

[0068] (2) Pretreatment of foamed nickel: cut the foamed nickel into 2*2cm 2 square, subsequent processing steps and conditions are as described in Example 1 to obtain pure foamed nickel.

[0069] (3) Preparation of NiFe-LDH / nickel foam catalyst: soak the pure nickel foam above in the deep eutectic solvent obtained in step (1), and react at 80° C. for 40 s. Then take out the foamed nickel (NiFe-LDH is supported on the surface of the foamed nickel), wash with ethanol and w...

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Abstract

The invention provides a nickel-iron double hydroxide / foamed nickel catalyst based on a ferric chloride / urea eutectic solvent, and a preparation method and an application thereof. The nickel-iron double hydroxide / foamed nickel catalyst is prepared from the eutectic solvent which is prepared from ferric chloride hexahydrate and urea. The preparation method has the advantages of cheap and easily available raw materials, low cost, extremely simple operating process, easily realized reaction conditions, no high temperature, low energy consumption, short preparation period, and suitableness for industrial production. The obtained catalyst is nickel-iron double hydroxide loaded on foamed nickel, and the catalytic active component is nickel-iron double hydroxide (NiFe-LDH), and has a hierarchicalstructure that is a nanoflower structure composed of nanosheets. The catalyst has a good electrocatalytic electrolysis effect on water and urea.

Description

technical field [0001] The invention relates to a nickel-iron double metal hydroxide / foam nickel catalyst based on ferric chloride / urea deep eutectic solvent, its preparation method and application, and belongs to the technical field of energy materials. Background technique [0002] At present, the excessive use of traditional energy represented by oil and coal has caused extremely serious environmental pollution. At the same time, the risk of energy depletion, environmental pollution, energy shortage and other issues have attracted widespread attention. To this end, green energy needs to be developed to meet human needs and reduce environmental pollution. Among them, hydrogen energy has the advantages of cleanliness and high efficiency, and electrocatalytic water splitting is one of the important methods for hydrogen production. However, in the process of electrocatalytic water splitting, due to the existence of oxygen evolution reaction (OER), the theoretical voltage req...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/755B01J37/34B01J35/04B01J25/02B01J35/10C25B1/04C25B11/06C25B11/03
CPCB01J23/755B01J25/02B01J35/0033B01J35/04B01J35/1004B01J37/343C25B1/04C25B11/031C25B11/075Y02E60/36
Inventor 李钟号张晨韵
Owner SHANDONG UNIV
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