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Composite nano material for air purification and preparation method thereof

A technology of composite nanomaterials and air purification, which is applied in the field of composite nanomaterials for air purification and its preparation, can solve the problems of serious human injury, etc., and achieve the effects of improving photosensitivity, utilization rate, and air purification effect

Inactive Publication Date: 2021-06-08
张娟丽
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ultraviolet photocatalysts have relatively high requirements on the light intensity and lighting conditions of ultraviolet rays, and artificial ultraviolet rays are more harmful to the human body.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A composite nanomaterial for air purification, comprising the following raw materials in parts by weight: 25 parts of composite nanoparticles, 15 parts of adsorption particles, 3 parts of hydroxyethyl methylcellulose, 3 parts of lignocellulose, and 10 parts of biomass glue;

[0028] The composite nanomaterial for air purification is made by the following method:

[0029] Mix hydroxyethyl methylcellulose, lignocellulose and biomass glue, then hydrolyze and condense to make a sol, add composite nanoparticles and adsorption particles in turn, stir at a constant speed of 150r / min for 30min, and then evaporate and dehydrate to make a sol. into a gel, followed by drying and heat treatment to prepare composite nanomaterials for air purification.

[0030] Composite nanoparticles are made by the following methods:

[0031] Step S1, add tetrabutyl titanate and glacial acetic acid into a beaker, add absolute ethanol, and stir at a constant speed of 100r / min for 30min to prepare sol...

Embodiment 2

[0039] A composite nanomaterial for air purification, comprising the following raw materials in parts by weight: 35 parts of composite nanoparticles, 20 parts of adsorption particles, 4 parts of hydroxyethyl methylcellulose, 4 parts of lignocellulose, and 12 parts of biomass glue;

[0040] The composite nanomaterial for air purification is made by the following method:

[0041] Mix hydroxyethyl methylcellulose, lignocellulose and biomass glue, then hydrolyze and condense to make a sol, add composite nanoparticles and adsorption particles in turn, stir at a constant speed of 150r / min for 30min, and then evaporate and dehydrate to make a sol. into a gel, followed by drying and heat treatment to prepare composite nanomaterials for air purification.

[0042] Composite nanoparticles are made by the following methods:

[0043] Step S1, add tetrabutyl titanate and glacial acetic acid into a beaker, add absolute ethanol, and stir at a constant speed of 100r / min for 30min to prepare s...

Embodiment 3

[0051] A composite nanomaterial for air purification, comprising the following raw materials in parts by weight: 40 parts of composite nanoparticles, 25 parts of adsorption particles, 4 parts of hydroxyethyl methylcellulose, 5 parts of lignocellulose, and 14 parts of biomass glue;

[0052] The composite nanomaterial for air purification is made by the following method:

[0053] Mix hydroxyethyl methylcellulose, lignocellulose and biomass glue, then hydrolyze and condense to make a sol, add composite nanoparticles and adsorption particles in turn, stir at a constant speed of 150r / min for 30min, and then evaporate and dehydrate to make a sol. into a gel, followed by drying and heat treatment to prepare composite nanomaterials for air purification.

[0054] Composite nanoparticles are made by the following methods:

[0055] Step S1, add tetrabutyl titanate and glacial acetic acid into a beaker, add absolute ethanol, and stir at a constant speed of 100r / min for 30min to prepare s...

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Abstract

The invention discloses a composite nano material for air purification and a preparation method thereof. The composite nano material is prepared from the following raw materials in parts by weight: 25 to 50 parts of composite nano particles, 15 to 30 parts of adsorption particles, 3 to 5 parts of hydroxyethyl methyl cellulose, 3 to 5 parts of lignocellulose and 10 to 15 parts of biomass glue. The preparation method comprises the following steps: mixing hydroxyethyl methyl cellulose, lignocellulose and biomass glue, then carrying out hydrolytic condensation to prepare sol, sequentially adding composite nano particles and adsorption particles, carrying out uniform-speed stirring for 30 min, then carrying out evaporation and dehydration to prepare gel, and then carrying out drying and heat treatment to prepare the composite nano-material for air purification. When the composite nano particles are used, visible light can excite indium vanadate to generate electrons, the electrons are transferred to the surfaces of the composite nano particles, the electrons and oxygen molecules adsorbed on the surfaces are combined to form superoxide free radicals, then the superoxide free radicals and organic pollutants adsorbed on the surfaces of the composite nano particles are subjected to an oxidation-reduction reaction, and the air purification effect of the composite nano particles is further improved.

Description

technical field [0001] The invention belongs to the technical field of nanomaterials, in particular to a composite nanomaterial for air purification and a preparation method thereof. Background technique [0002] At present, the particle size of nano-scale titanium dioxide is mostly around 100 nanometers, and the catalytic efficiency is not high, and there are still relatively few products with a particle size of 5-10 nanometers in the market. Generally, photocatalysts can only produce photocatalysis under the irradiation of ultraviolet light with a wavelength of 200-380 nanometers, but the indoors and cars that need photocatalyst treatment often cannot meet the activation conditions of this photocatalyst. Ultraviolet photocatalyst relies on ultraviolet rays in sunlight or artificial ultraviolet light sources to catalyze the reaction of sodium dioxide to form a decomposition film. Ultraviolet photocatalysts have relatively high requirements on the intensity of ultraviolet r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/86B01D53/44B01D53/02
CPCB01D53/8687B01D53/02
Inventor 张娟丽
Owner 张娟丽
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