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Preparation method and application of foamed nickel loaded nitrogen phosphorus oxygen/nickel phosphide flower-like material

A technology of foamed nickel and nickel phosphide, applied in chemical instruments and methods, phosphides, nitrogen compounds, etc., can solve problems such as reducing active sites, and achieve the effects of inhibiting agglomeration, good catalytic activity, and high stability.

Pending Publication Date: 2022-07-22
DONGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, catalysts are usually prone to agglomeration, which reduces the exposure of active sites and affects the conduction of electrons

Method used

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  • Preparation method and application of foamed nickel loaded nitrogen phosphorus oxygen/nickel phosphide flower-like material
  • Preparation method and application of foamed nickel loaded nitrogen phosphorus oxygen/nickel phosphide flower-like material
  • Preparation method and application of foamed nickel loaded nitrogen phosphorus oxygen/nickel phosphide flower-like material

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Experimental program
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Effect test

Embodiment 1

[0033] This embodiment provides a foam nickel-supported nitrogen-phosphorus-oxygen / nickel-phosphide flower-like material (NPO / Ni x P y @NF) preparation method, including the following steps:

[0034] Step 1): place the nickel foam of 2*2cm successively in dilute hydrochloric acid, ethanol and deionized water for ultrasonic 30min;

[0035] Step 2): Dissolve 1.45g of nickel nitrate hexahydrate and 1.40g of hexamethylenetetramine in 50mL of deionized water, stir until the crystals disappear, and then continue to ultrasonically vibrate to ensure complete dissolution;

[0036] Step 3): place the pretreated nickel foam in step 1) and the solution obtained in step 2) together in a hydrothermal reaction kettle, and react at 120 ° C (the reaction temperature should be controlled to fluctuate not more than 5 ° C) for 14h ;

[0037] Step 4): take out the nickel foam in step 3), rinse it, transfer it to a vacuum drying oven, set it for 8 hours, and dry it at 70 °C;

[0038] Step 5): C...

Embodiment 2

[0040] A kind of foam nickel supported nitrogen phosphorus oxygen / nickel phosphide flower-like material (NPO / Ni xP y The preparation method of @NF) includes the following steps:

[0041] Step 1) place 2*2cm of nickel foam successively in dilute hydrochloric acid, ethanol and deionized water for ultrasonic 30min;

[0042] Step 2): Dissolve 1.45g of nickel nitrate hexahydrate and 1.40g of hexamethylenetetramine in 50mL of deionized water, stir until the crystals disappear, and then continue to ultrasonically vibrate to ensure complete dissolution;

[0043] Step 3): place the pretreated nickel foam in step 1) and the solution obtained in step 2) together in a hydrothermal reactor, and react at 100°C for 14h;

[0044] Step 4): take out the nickel foam in step 3), rinse it, transfer it to a vacuum drying oven, set it for 8 hours, and dry it at 70 °C;

[0045] Step 5): Collect the dried nickel foam, transfer it to a tube furnace, and place 0.5g NaH in a quartz boat near the gas i...

Embodiment 3

[0047] A kind of foam nickel supported nitrogen phosphorus oxygen / nickel phosphide flower-like material (NPO / Ni x P y The preparation method of @NF) includes the following steps:

[0048] Step 1): place the nickel foam of 2*2cm in dilute hydrochloric acid, ethanol and deionized water for ultrasonic 30min in turn;

[0049] Step 2): Dissolve 1.45g of nickel nitrate hexahydrate and 1.40g of hexamethylenetetramine in 50mL of deionized water, stir until the crystals disappear, and then continue to ultrasonically vibrate to ensure complete dissolution;

[0050] Step 3): place the pretreated nickel foam in step 1) and the solution obtained in step 2) together in a hydrothermal reactor, and react at 140°C for 14h;

[0051] Step 4): take out the nickel foam in step 3), rinse it, transfer it to a vacuum drying oven, set it for 8 hours, and dry it at 70 °C;

[0052] Step 5): Collect the dried nickel foam, transfer it to a tube furnace, and place 0.5g NaH in a quartz boat near the gas ...

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Abstract

The invention discloses a preparation method and application of a foamed nickel loaded nitrogen phosphorus oxygen / nickel phosphide flower-like material. The foamed nickel loaded nitrogen-phosphorus-oxygen / nickel phosphide flower-like material is of a flower-like core-shell structure with nickel phosphide as a core layer and nitrogen-phosphorus-oxygen as a shell layer, and the preparation method comprises the steps that nickel salt and hexamethylenetetramine are added into deionized water to be completely dissolved, and then a mixed solution is obtained; carrying out hydrothermal reaction on the pretreated foamed nickel and the obtained mixed solution; and after the reaction is finished, taking out the foamed nickel, carrying out vacuum drying, transferring the dried foamed nickel into a tubular furnace, placing NaH2PO2 at a position close to a gas inlet end, carrying out heat treatment in a nitrogen atmosphere, and naturally cooling to room temperature, so as to obtain the foamed nickel loaded nitrogen phosphorus oxygen / nickel phosphide flower-shaped material. The obtained catalytic material has a rich layered structure on the surface, has a large specific surface area, and shows excellent electrocatalytic activity and stability in the application of hydrogen production by electrolysis of water. The preparation method is simple, can be used for large-scale production, and has a good application prospect.

Description

technical field [0001] The invention relates to a preparation method and application of a foam nickel-loaded nitrogen-phosphorus-oxygen / nickel-phosphide flower-like material, and belongs to the technical field of water electrolysis hydrogen production. Background technique [0002] Hydrogen energy has attracted worldwide attention in recent years due to its high energy density, cleanliness and no pollution. Generally, there are three main synthetic ways to obtain hydrogen energy: methane steam reforming, coal gasification and water electrolysis. During methane steam reforming and coal gasification, steam reacts with methane or coal at high temperatures to produce hydrogen and carbon dioxide. Although these two methods account for more than 95% of the global hydrogen fuel production, their processes consume a large amount of fossil fuels and cause environmental pollution. Hydrogen production by water electrolysis uses water as the only raw material, which truly realizes the...

Claims

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Application Information

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IPC IPC(8): C25B11/031C25B11/091C25B1/04C01B25/08C01B21/097
CPCC25B11/031C25B11/091C25B1/04C01B25/08C01B21/097C01P2004/03C01P2004/80C01P2004/61
Inventor 乔锦丽和蕊徐能能王永霞薛怀斌殷征宇芦拓徐冰清刘朝龙
Owner DONGHUA UNIV
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