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Nickel oxide nanoparticles and synthesis method thereof

A nanoparticle and synthesis method technology, applied in the field of chemical engineering, can solve the problems of cumbersome operation, high viscosity, long stirring time, etc., and achieve the effects of less interference from external factors, short operation time, and water saving

Inactive Publication Date: 2021-08-06
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the sodium alginate solution has a high viscosity, and the maximum mass fraction of sodium alginate used in its work is 4wt%. The longer stirring time and cumbersome operation are the main obstacles to expand the process to an industrial scale.

Method used

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  • Nickel oxide nanoparticles and synthesis method thereof
  • Nickel oxide nanoparticles and synthesis method thereof
  • Nickel oxide nanoparticles and synthesis method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] (1) Weigh 150g of sodium alginate powder, add it to the pot of the wet shear granulator, close the device, set the stirring rate and shear rate to 350rpm and 1500rpm respectively, start the stirring paddle and the cutter, and pass through the peristaltic The pump sprays 150mL of binder (deionized water) into the pot from the spray gun, and performs shear granulation treatment (time is 540s); after the binder is sprayed, stop the experiment and unload to obtain sodium alginate wet particles;

[0051] (2) Put the sodium alginate wet granules described in step (1) into an oven, and bake at 60° C. for 24 hours to obtain sodium alginate granules;

[0052] (3) Add 10 g of dried sodium alginate particles (1 mm in particle size) to 200 mL of nickel nitrate hexahydrate aqueous solution (0.05 mol / L) and react for 1 hour to obtain nickel alginate particles; After washing with deionized water, carry out vacuum drying at 90°C for 24 hours;

[0053] (4) The vacuum-dried nickel algi...

Embodiment 2

[0066] (1) Weigh 150g of sodium alginate powder, add it to the pot of the wet shear granulator, close the device, set the stirring rate and shear rate to 350r and 1500r respectively, start the stirring paddle and the cutter, and pass through the peristaltic The pump sprays 150mL of binder (deionized water) into the pot from the spray gun, and performs shear granulation treatment (time is 540s); after the binder is sprayed, stop the experiment and unload to obtain sodium alginate wet particles;

[0067] (2) Put the sodium alginate wet granules described in step (1) into an oven, and bake at 60° C. for 24 hours to obtain sodium alginate granules;

[0068] (3) Add 10 g of dried sodium alginate particles (with a particle size of 1 mm) into 200 mL of nickel nitrate hexahydrate aqueous solution (0.05 mol / L) and react for 1 h to obtain nickel alginate particles. After the obtained nickel alginate particles were washed with deionized water, they were vacuum-dried at 90°C for 24 hours...

Embodiment 3

[0072] (1) Weigh 150g of sodium alginate powder, add it to the pot of the wet shear granulator, close the device, set the stirring rate and shear rate to 350r and 1500r respectively, start the stirring paddle and the cutter, and pass through the peristaltic The pump sprays 150mL of binder (deionized water) into the pot from the spray gun, and performs shear granulation treatment (time is 540s); after the binder is sprayed, stop the experiment and unload to obtain sodium alginate wet particles;

[0073] (2) Put the sodium alginate wet granules described in step (1) into an oven, and bake at 60° C. for 24 hours to obtain sodium alginate granules;

[0074] (3) Add 10 g of dried sodium alginate particles (with a particle size of 1 mm) into 200 mL of nickel nitrate hexahydrate aqueous solution (0.05 mol / L) and react for 1 h to obtain nickel alginate particles. After the obtained nickel alginate particles were washed with deionized water, they were vacuum-dried at 90°C for 24 hours...

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Abstract

The invention discloses nickel oxide nanoparticles and a synthesis method thereof. The method comprises the following steps: adding sodium alginate powder into a wet-process shearing granulator, starting a stirring paddle and a cutter, spraying an adhesive into the wet-process shearing granulator, shearing, granulating and drying to obtain sodium alginate particles, and adding the sodium alginate particles into a nickel nitrate hexahydrate solution for reaction to obtain nickel alginate particles; and washing, drying and calcining to obtain the nickel oxide nanoparticles. The nickel oxide nanoparticles prepared by the method are of a cubic structure, and the particle size is about 30nm. The method is high in repeatability, is slightly interfered by external factors, and is also suitable for synthesizing other metal oxide nanoparticles.

Description

technical field [0001] The invention belongs to the field of chemical engineering, and in particular relates to a nickel oxide nanoparticle and a synthesis method thereof. Background technique [0002] Nickel oxide (NiO) is an antiferromagnetic material with excellent gas-sensing properties, electrochemical properties, catalytic properties, photoelectric properties and electromagnetic properties, making nickel oxide widely used in many fields such as gas detection, environmental purification, battery capacitors, etc. It has important application value. As a low-temperature synthesis method, the sol-gel method has simple process equipment, is easy to scale up, and the synthesized products have high purity and fine particles. It is one of the commonly used methods for preparing various metal oxide nanomaterials. However, the sol-gel method generally adopts certain toxic precursors (ester compounds or metal alkoxides) or organic solvents. From the perspective of environmental...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G53/04B82Y30/00
CPCB82Y30/00C01G53/04C01P2002/72C01P2004/04C01P2004/64
Inventor 王子华刘玲煜王学重
Owner SOUTH CHINA UNIV OF TECH
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