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A kind of preparation method of oxide nanopowder

A nano-powder and oxide technology, which is applied in the field of preparation of zinc oxide, oxide nano-powder, titanium oxide or zirconia nano-powder, which can solve the difficulties of sediment washing, filtration and drying, and the influence of the purity of nanoparticles , large amount of precipitating agent, etc., to achieve the effect of simple preparation process, low cost and good dispersibility

Inactive Publication Date: 2011-12-14
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the shortcomings of this method are that the reaction process takes a long time, the amount of precipitant is large, and the yield is relatively low.
However, the disadvantage of this method is that the cost of raw materials is high, the washing, filtering and drying of the sediment are difficult, and the discharge pollutes the environment, so the industrial application is restricted to a certain extent.
However, the existence of surfactants and co-surfactants in microemulsions will have a certain impact on the purity of nanoparticles.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Bacterial cellulose membrane is prepared by Acetobacter xylinum, cut 5cm with scissors 2 Separate and purify the bacterial cellulose membrane, soak it in 50mL 1wt% zinc acetate solution for 5min, take out the membrane with tweezers, put it into a vacuum drying oven at 50°C and dry for 2 hours.

[0025] (2) Move the dried film to a muffle furnace and bake it in an air atmosphere at a temperature of 600° C. for 120 minutes to obtain a high-purity zinc oxide nanopowder. The prepared zinc oxide nanopowder is a pure zinc oxide hexagonal wurtzite phase, the particle morphology is mostly spherical or polyhedral, and the average particle size is 25nm.

[0026] (3) Take 150 mg of zinc oxide nanopowder in 100 mL of 10 mg / L methyl orange solution, and magnetically stir for 180 min under sunlight irradiation, and the photocatalytic efficiency to the methyl orange solution is 95.3%.

Embodiment 2

[0028] (1) Bacterial cellulose membrane is prepared by Acetobacter, cut 5cm with scissors 2 After separating and purifying the bacterial cellulose membrane, soak it in 50mL 5wt% zinc acetate solution for 2min, take out the membrane with tweezers, put it into a vacuum drying oven and dry it at 50°C for 2 hours.

[0029] (2) Move the dried film to a muffle furnace and bake it in an air atmosphere at a temperature of 600° C. for 180 minutes to obtain a high-purity zinc oxide nanopowder. The prepared zinc oxide nanopowder is a pure zinc oxide hexagonal wurtzite phase, the particle morphology is mostly spherical or polyhedral, and the average particle size is 32nm.

[0030] (3) Take 150 mg of zinc oxide nanopowder in 100 mL of 10 mg / L methyl orange solution, and magnetically stir for 180 min under sunlight irradiation, and the photocatalytic efficiency to the methyl orange solution is 93.7%.

Embodiment 3

[0032] (1) Bacterial cellulose membrane is prepared by Agrobacterium, cut 5cm with scissors 2 Separate and purify the bacterial cellulose membrane, soak it in 50mL 0.01wt% zinc acetate solution for 720min, then take out the membrane with tweezers, put it into a vacuum drying oven and dry it at 50°C for 2 hours.

[0033] (2) Move the dried film to a muffle furnace and bake it in an air atmosphere at a temperature of 480° C. for 200 minutes to obtain a high-purity zinc oxide nanopowder. The prepared zinc oxide nanopowder is a pure zinc oxide hexagonal wurtzite phase, complete in crystallization, mostly spherical or polyhedral in shape, and the average particle size is 10nm.

[0034] (3) Take 150 mg of zinc oxide nanopowder in 100 mL of 10 mg / L methyl orange solution, and magnetically stir for 180 min under sunlight irradiation, and the photocatalytic efficiency to the methyl orange solution is 96.8%.

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Abstract

The invention particularly relates to a preparation method of oxide nanopowder, which belongs to the field of inorganic non-metallic nanomaterials, specifically a method for preparing zinc oxide, titanium oxide or zirconia nanopowder using bacterial cellulose membrane as a carrier , Wash the bacterial cellulose membrane and fully soak it in the oxide precursor solution, then take out the membrane and dry it, and then roast it in an air or oxygen atmosphere to obtain nanoscale oxide powder. The preparation process of the method is simple, easy to operate, controllable in preparation technology, less in pollution, and lower in cost; the prepared nanopowder has high purity, small particle size, uniform size and good dispersion; by simply changing the experimental conditions The controllable preparation of nanoparticle size and distribution can be realized, and it has broad application value in the field of industrial production.

Description

technical field [0001] The invention relates to a method for preparing oxide nanopowder, which belongs to the field of inorganic non-metallic nanomaterials, in particular to a method for preparing zinc oxide, titanium oxide or zirconium oxide nanopowder using bacterial cellulose membrane as a carrier. Background technique [0002] Zinc oxide, zirconium oxide, titanium oxide and other oxide nanopowders are new functional nanomaterials, due to their surface effects, quantum size effects and macroscopic quantum tunneling effects, they are widely used in magnetism, light, electricity, chemistry, biology, etc. It exhibits many special properties and new uses unmatched by its bulk materials, such as non-toxic and non-migratory, fluorescent, piezoelectric, photocatalytic properties, bactericidal and antibacterial, deodorizing and self-cleaning, ability to absorb and scatter ultraviolet rays, etc. , It also has a wide range of uses in ultraviolet lasers, optical waveguide devices, l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B82B3/00
Inventor 胡伟立陈仕艳王彪王华平
Owner DONGHUA UNIV
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