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Preparation method of needle shaped edge nickel oxide nano flowers of

A nanoflower and nickel oxide technology, applied in the field of nanomaterials, can solve the problems of hindering particle diffusion, impact, particle diffusion and specific surface area disadvantages, and achieve the effects of enhancing adsorption capacity, simplifying process steps, and excellent physical and chemical properties

Inactive Publication Date: 2015-09-09
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the current study, the more dispersed one-dimensional nanostructures will have a more adverse effect on their performance due to the limitation of their dimensions in the electron conduction process and the discontinuity in the electron flow process.
In addition, for the ordinary NiO three-dimensional nanostructure, because it often has a microstructure that hinders the diffusion of particles, it is at a disadvantage compared with the layered structure in terms of particle diffusion and specific surface area.

Method used

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  • Preparation method of needle shaped edge nickel oxide nano flowers of
  • Preparation method of needle shaped edge nickel oxide nano flowers of

Examples

Experimental program
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Effect test

Embodiment 1

[0023] Step (1): Add 0.3g NiCl to 20ml deionized water 2 ·6H 2 O, to which 0.07 g of Na was added after stirring for 15 minutes 2 C 2 o 4 Solid, stirred for 30 minutes with a magnetic stirrer;

[0024] Step (2): add 20ml EG (ethylene glycol) liquid to above-mentioned solution, stir 30 minutes with magnetic stirrer;

[0025] Step (3): Put the above solution into a hydrothermal kettle, heat it at 200°C and cool it with the furnace. Then the obtained solution was centrifuged and washed 8 times, then dried at 60°C for 30 hours, then ground into powder, put into a crucible, and calcined at a temperature range of 400°C to obtain the nickel oxide needle-shaped edge nanoflowers .

Embodiment 2

[0027] Step (1): Add 0.33g NiCl to 20ml deionized water 2 ·6H 2 O, to which 0.07 g of Na was added after stirring for 20 minutes 2 C 2 o 4 Solid, stirred for 30 minutes with a magnetic stirrer;

[0028] Step (2): add 20ml EG (ethylene glycol) liquid to above-mentioned solution, stir 30 minutes with magnetic stirrer;

[0029] Step (3): Put the above solution into a hydrothermal kettle, heat it at 190°C and cool it with the furnace. The resulting solution was centrifuged and washed 8 times, then dried at 60°C for 30 hours, then ground into powder, put into a crucible, and calcined at a temperature range of 390°C to obtain the nickel oxide needle-shaped edge nanoflowers .

Embodiment 3

[0031] Step (1): Add 0.27g NiCl to 20ml deionized water 2 ·6H 2 O, to which 0.06 g of Na was added after stirring for 10 minutes 2 C 2 o 4 Solid, stirred for 35 minutes with a magnetic stirrer;

[0032] Step (2): add 20ml EG (ethylene glycol) liquid to above-mentioned solution, stir 25 minutes with magnetic stirrer;

[0033] Step (3): Put the above solution into a hydrothermal kettle, heat it at 180°C and cool it with the furnace. The resulting solution was centrifuged and washed 6 times, then dried at 80°C for 25 hours, then ground into powder, put into a crucible, and calcined at a temperature range of 420°C to obtain the nickel oxide needle-shaped edge nanoflowers .

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Abstract

The invention discloses a preparation method of needle shaped edge nickel oxide nano flowers. The nickel oxide nano flowers are of dispersed needle shaped edge structure. The preparation method comprises the following steps: adding solid Na2CO2O4 to an NiCl2 water solution, stirring, then adding ethylene glycol active agent and stirring; performing hydrothermal method treatment on the solution obtained in step a; then grinding and calcinating to obtain the needle shaped edge nickel oxide nano flowers. According to the method, the process control is reasonable; the process steps are simplified; nano wire bundles with two ends in the shape of dispersed needles are polymerized to obtain the needle shaped edge nickel oxide nano flowers; compared with the traditional nanoparticles, the needle shaped edge nickel oxide nano flowers are outstanding in physicochemical properties, and the absorbing capacity of a nano structure to particles can be improved.

Description

technical field [0001] The invention relates to the technical field of nanomaterials, in particular to a preparation method for hydrothermally synthesizing nickel oxide needle-shaped edge nanoflowers. Background technique [0002] NiO is a wide bandgap (3.6-4.0eV) p-type semiconductor metal oxide. NiO nanomaterials play an important role in industrial production. Ni 2+ With a 3d orbital, it has a tendency to preferentially adsorb oxygen and negative ions, and can also activate other reducing gases, and play a good catalytic role in the decomposition, synthesis and transformation of organic matter. Due to its low cost and large specific capacity, the battery electrode material made of NiO has attracted much attention. In addition, due to its size effect and other factors, nano-NiO has obvious discharge advantages compared with large-particle NiO batteries. The discharge capacity is greatly improved, and the electrochemical performance of the electrode is improved. Nano-Ni...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G53/04B82Y30/00B82Y40/00
Inventor 曹盛凯曾文龙晖午苗斌张鹤王晨曦缪瑞阳王晶余阳春
Owner CHONGQING UNIV
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