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Preparation method of honeycomb-shaped nickel oxide

A nickel oxide, morphology technology, applied in nickel oxide/nickel hydroxide, nanotechnology for materials and surface science, nanotechnology, etc., can solve the degradation of photoelectric performance of nickel oxide, the inability to stabilize honeycomb structure, and the collapse of morphology and other problems, to achieve the effect of inhibiting clogging, stable structure and uniform dispersion

Active Publication Date: 2021-01-26
CHONGQING UNIV OF ARTS & SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, during the preparation process, the morphology collapses easily, and the honeycomb structure cannot be stabilized; the agglomeration of the surface leads to the blockage of the pores in the honeycomb appearance, the decrease of the specific surface area, the pore volume, etc., which leads to the decrease of the photoelectric performance of nickel oxide.

Method used

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  • Preparation method of honeycomb-shaped nickel oxide
  • Preparation method of honeycomb-shaped nickel oxide
  • Preparation method of honeycomb-shaped nickel oxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A preparation method of nickel oxide with honeycomb morphology, carried out as follows:

[0038] (1), nickel acetate tetrahydrate: urea: SDS = 2:10:1 molar ratio mixture is dissolved in deionized water to form a mixed solution, the mass volume ratio of the mixture and deionized water is 0.2772g / mL;

[0039] (2), add deionized water to the mixed solution while stirring at a speed of 350rpm, the supplemented deionized water is 15 times that of the deionized water in the original mixed solution, then continue to add 1,2-propylene glycol while stirring, and then Continue to stir for 30 minutes to form a precursor solution. The volume ratio of deionized water and 1,2-propanediol in the obtained precursor solution is 1:2;

[0040] (3) Put the precursor solution in the reaction kettle, seal and heat at 190°C for 8 hours, then cool down to room temperature at a rate of 2°C / min;

[0041] (4) Centrifuge after cooling, wash with ethanol and deionized water in sequence, and dry at...

Embodiment 2

[0044] A preparation method of nickel oxide with honeycomb morphology, carried out as follows:

[0045](1), nickel acetate tetrahydrate: urea: SDS = 2:8:1 molar ratio mixture is dissolved in deionized water to form a mixed solution, the mass volume ratio of the mixture and deionized water is 0.2532g / mL;

[0046] (2), add deionized water to the mixed solution while stirring at a speed of 300rpm, the replenished deionized water is 5 times that of the deionized water in the mixed solution, then continue to add 1,2-propylene glycol while stirring, and then Continue to stir for 20 minutes to form a precursor solution, the volume ratio of deionized water and 1,2-propanediol in the obtained precursor solution is 1:4;

[0047] (3) Put the precursor solution in the reaction kettle, seal and heat at 170°C for 14h, then cool down to room temperature at a rate of 2°C / min;

[0048] (4) Centrifuge after cooling, wash with ethanol and deionized water in sequence, and dry at 70°C for 8 hours...

Embodiment 3

[0051] A preparation method of nickel oxide with honeycomb morphology, carried out as follows:

[0052] (1), nickel acetate tetrahydrate: urea: SDS = 2:9:1 molar ratio mixture is dissolved in deionized water to form a mixed solution, the mass volume ratio of the mixture and deionized water is 0.2652g / mL;

[0053] (2), add deionized water to the mixed solution while stirring at a speed of 320rpm, the supplemented deionized water is 10 times that of the deionized water in the mixed solution, then continue to add 1,2-propylene glycol while stirring, and then Continue to stir for 25 minutes to form a precursor solution. The volume ratio of deionized water and 1,2-propanediol in the obtained precursor solution is 1:3.5;

[0054] (3) Put the precursor solution in the reaction kettle, seal and heat at 180°C for 10h;

[0055] (4) Centrifuge after cooling, wash with ethanol and deionized water in sequence, and dry at 75°C for 8 hours;

[0056] (5) The dried precursor was calcined at ...

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Abstract

A preparation method of honeycomb-shaped nickel oxide is characterized by comprising the steps that nickel acetate tetrahydrate, urea and SDS are mixed and dissolved in deionized water to form a mixedsolution, deionized water is supplemented while stirring is conducted, then 1, 2-propanediol is added, sealed heating is conducted after stirring is conducted, the temperature is reduced to the roomtemperature after heating is completed, and then centrifuging, washing and drying are conducted, and finally high-temperature calcination is carried out at 500 DEG C. The honeycomb morphology nickel oxide prepared by the method is regular in morphology, is of a honeycomb morphology microsphere structure, uniformly grows ultrathin porous nanosheets and a nanoparticle structure on the surface, is uniform in dispersion, does not agglomerate, is uniform in overall microsphere size, has the particle size of about 1.5 microns, and has excellent specific surface area, the specific surface area is 243.46 m < 2 > / g, the pore diameter is 20.85 nm, and the pore volume is 1.1857 cm < 3 > / g.

Description

technical field [0001] The invention relates to the technical field of preparation of micro-nano structured metal oxides, in particular to a method for preparing honeycomb-shaped nickel oxide. Background technique [0002] Due to its unique optical and electrical characteristics, nickel oxide has a very wide range of applications in the fields of optoelectronics, sensing, and catalysis. Specifically, it can be used as electrode materials, gas-sensitive materials, photocatalytic materials, and photoelectric materials. Specifically, nickel oxide is often used as an electrode material because of its high theoretical specific capacitance in metal oxide materials. Nickel oxide prepares grains with small size and large specific surface area, which can be more fully in contact with active materials and electrolytes to enhance the strength of the material. Electrochemical properties and utilization efficiency; nickel oxide has good electron blocking properties and hole transport cap...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G53/04B82Y30/00B82Y40/00
CPCC01G53/04B82Y30/00B82Y40/00C01P2004/30C01P2006/12C01P2006/16C01P2006/14C01P2004/61C01P2004/64C01P2002/72C01P2004/03
Inventor 曹仕秀赵茂宇雷雅茜匡逸凡韩涛彭玲玲
Owner CHONGQING UNIV OF ARTS & SCI
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