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Preparation of layered nickel/ferronickel double-metal oxide nano composite material

A technology of double metal oxides and nanocomposites, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve problems such as low hydrogen evolution overpotential, environmental pollution, and consumption of fossil energy, and achieve Increased specific surface area, high purity, safe and simple operation process

Active Publication Date: 2021-12-07
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the first three traditional hydrogen production methods still consume traditional fossil energy and cause environmental pollution. The environmental friendliness of electrolysis of water hydrogen production technology is highlighted. At present, PtC catalyst is most used in industry, and its hydrogen evolution overpotential is very high. Low, electrocatalytic hydrogen evolution performance is very good, it is an excellent catalyst that can replace fossil fuels for hydrogen production

Method used

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  • Preparation of layered nickel/ferronickel double-metal oxide nano composite material
  • Preparation of layered nickel/ferronickel double-metal oxide nano composite material
  • Preparation of layered nickel/ferronickel double-metal oxide nano composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] Step 1: Weigh 0.1g NiCl 2 ·6H 2 O, 0.06g Fe(NO 3 ) 3 9H 2 Dissolve O in 60mL of deionized water, stir to dissolve evenly, then add 0.27g of urea, stir to dissolve, cover and seal, place in an electric heating constant temperature blast drying oven, and raise the temperature from room temperature to 140°C at a rate of 5°C / min. And keep it warm at 140°C for 8h. After cooling down to room temperature naturally, the precipitate was extracted by centrifugation, washed alternately with deionized water and absolute ethanol, and then dried in a drying oven for 12 hours.

[0065] The second step: Pour the obtained product into a magnetic boat, spread it and transfer it to a tube furnace in a nitrogen atmosphere, raise the temperature from room temperature to 400°C at a rate of 10°C / min, and heat at a constant temperature for 4h. Then cooled to room temperature, taken out and sealed for storage in subsequent experiments.

[0066] The third step: Pour the resulting product i...

Embodiment 2

[0072] Step 1: Weigh 0.06g NiCl 2 ·6H 2 O, 0.05g Fe(NO 3 ) 3 9H 2 Dissolve O in 60mL of deionized water, stir to dissolve evenly, then add 0.6g of urea, stir to dissolve, cover and seal, place in an electric heating constant temperature blast drying oven, and raise the temperature from room temperature to 120°C at a rate of 5°C / min. And keep it warm at 120°C for 10h. After cooling down to room temperature naturally, the precipitate was extracted by centrifugation, washed alternately with deionized water and absolute ethanol, and then dried in a drying oven for 12 hours.

[0073] The second step: Pour the obtained product into a magnetic boat, spread it and transfer it to a tube furnace in a nitrogen atmosphere, raise the temperature from room temperature to 400°C at a rate of 10°C / min, and heat at a constant temperature for 4h. Then cooled to room temperature, taken out and sealed for storage in subsequent experiments.

[0074] The third step: Pour the resulting product ...

Embodiment 3

[0078] Step 1: Weigh 0.05g NiCl 2 ·6H 2 O, 0.08g Fe(NO 3 ) 3 9H 2 O was dissolved in 60mL of deionized water, stirred and dissolved evenly, then 0.27g of urea was added, stirred and dissolved, sealed, placed in an electric heating constant temperature blast drying oven, and the temperature was raised from room temperature to 160°C at a rate of 5°C / min. And keep it warm at 160°C for 12h. After cooling down to room temperature naturally, the precipitate was extracted by centrifugation, washed alternately with deionized water and absolute ethanol, and then dried in a drying oven for 12 hours.

[0079] Step 2: Pour the obtained product into a magnetic boat, lay it flat and transfer it to a tube furnace in a nitrogen atmosphere, raise the temperature from room temperature to 400°C at a rate of 10°C / min, and heat at a constant temperature for 3h. Then cooled to room temperature, taken out and sealed for storage in subsequent experiments.

[0080] The third step: Pour the resul...

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Abstract

The invention belongs to the technical field of composite materials, and discloses a layered nickel / ferronickel double-metal oxide nano composite material and a preparation method thereof. The preparation method comprises the steps: adding a nickel salt, an iron salt and a precipitator into a reaction kettle for hydrothermal reaction, after the reaction is finished and the temperature is reduced, centrifugally collecting a product in the reaction kettle, and washing and drying to obtain the layered ferro-nickel double-metal hydroxide nano composite material; pouring the layered ferronickel double-metal hydroxide nano composite material into a magnetic boat, laying and transferring the layered ferronickel double-metal hydroxide nano composite material into a tubular furnace for calcining treatment to obtain a layered ferronickel double-metal oxide nano composite material; and pouring the layered ferronickel double-metal oxide nano composite material into the magnetic boat, laying, and transferring to the tubular furnace for calcining reduction treatment. The method can be applied to renewable energy sources, and is simple in process, universal in preparation condition, stable in product morphology, convenient and simple in product treatment, excellent in catalytic activity and suitable for medium-scale industrial production.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and relates to a nickel-containing double metal oxide nanocomposite material and a preparation method and application thereof. Background technique [0002] In recent years, renewable energy has received more and more attention as an alternative to fossil fuels. Hydrogen, with its high energy density and eco-friendliness, is regarded as an ideal energy carrier for sustainable economic development. Among them, the electrolysis of water is a feasible method for high-purity and large-scale hydrogen production. However, due to the overpotential of the cathode, a large amount of additional electric energy needs to be input in the process of hydrogen production by electrolysis of water, which limits the practical application of hydrogen production by electrolysis of water. [0003] Platinum (Pt), as the most commonly used electrocatalyst in the hydrogen evolution reaction, exhibits a very ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B1/04C25B11/091B82Y30/00B82Y40/00
CPCC25B1/04C25B11/091B82Y30/00B82Y40/00Y02E60/36Y02P20/133
Inventor 温鸣田亚坤
Owner TONGJI UNIV
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