Luminescent photocatalytic coating and preparation method thereof

A technology of photocatalysis and coatings, applied in the direction of luminous coatings, coatings, etc., can solve the problems of low light conversion efficiency, photocatalytic performance reduction, industrial application restrictions, etc., and achieve the effect of improving photocatalytic efficiency and strengthening efficiency

Active Publication Date: 2015-04-22
山东力同化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since the band gap of titanium dioxide is 3.12eV, it can only absorb ultraviolet light with a wavelength less than 387nm, which makes the utilization rate of sunlight energy only about 4%, resulting in low light conversion efficiency and greatly restricting industrial applications.
In order to expand the photoresponse range of TiO2, scholars at home and abroad have carried out a lot of modification research on TiO2, such as m

Method used

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Examples

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Effect test

preparation example Construction

[0049] A kind of preparation method of above-mentioned luminous photocatalytic coating, it comprises following implementation steps:

[0050] 1) Prepare photocatalytic titanium dioxide nanotubes through hydrothermal synthesis method with commercially available photocatalytic titanium dioxide. The average diameter of the prepared photocatalytic titanium dioxide nanotubes is between 5-15nm and the length is between 80-120nm. Titanium dioxide nanotubes are multilayer nano-films, and have photocatalytic activity in the presence of visible light; the content of the photocatalytic titanium dioxide nanotubes in the coating is 25-65%;

[0051] 2) adding at least one pigment to the photocatalytic titanium dioxide nanotubes obtained in step 1), the content of which is 15-25%;

[0052] 3) Add long-acting rare earth luminous powder in step 2), and its content is 5-10%.

[0053] 4) During the paint making process, 3-5% of self-solvent, 2-15% of dispersant, 2-5% of antifoaming agent, 1-3% ...

Embodiment 1

[0070] A luminous photocatalytic coating includes the following components and content: photocatalytic titanium dioxide nanotubes, 25%; long-lasting rare earth luminous powder, 5%; pigments, 15%; self-solvent 3%, dispersant 2%, antifoaming agent 2 %, fungicide 1% and calcium carbonate 3%.

[0071] A preparation method for a luminous photocatalytic coating, which comprises the following steps:

[0072] 1) Prepare photocatalytic titanium dioxide nanotubes by hydrothermal synthesis of commercially available photocatalytic titanium dioxide, the average diameter of the prepared photocatalytic titanium dioxide nanotubes is between 5nm and length between 80nm, the titanium dioxide nanotubes are A multi-layer nano film with photocatalytic activity in the presence of visible light; the content of photocatalytic titanium dioxide nanotubes in the coating is 25%;

[0073] 2) adding at least one pigment to the photocatalytic titanium dioxide nanotubes obtained in step 1), the content of w...

Embodiment 2

[0083] A luminescent photocatalytic coating includes the following components and contents: photocatalytic titanium dioxide nanotubes, 32%; long-lasting rare earth luminous powder, 8%; pigments, 20%; self-solvent 4%, dispersant 6%, antifoaming agent 3 %, fungicide 2% and calcium carbonate 4%.

[0084] A preparation method for a luminous photocatalytic coating, which comprises the following steps:

[0085] 1) Prepare photocatalytic titanium dioxide nanotubes through hydrothermal synthesis method with commercially available photocatalytic titanium dioxide. The average diameter of the prepared photocatalytic titanium dioxide nanotubes is between 10nm and the length is between 90nm. The titanium dioxide nanotubes are A multi-layer nano film with photocatalytic activity in the presence of visible light; the content of photocatalytic titanium dioxide nanotubes in the coating is 32%;

[0086] 2) adding at least one pigment to the photocatalytic titanium dioxide nanotubes obtained in...

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Abstract

The invention relates to luminescent photocatalytic coating and a preparation method thereof. The luminescent photocatalytic coating is novel coating capable of removing the lampblack and the odor. The luminescent photocatalytic coating comprises inorganic coating base basically with dispersed nanoscale photocatalytic titanium dioxide nanotube and rare-earth long-acting noctilucence powder. The luminescent photocatalytic coating comprises the following components: 25 to 65 percent of photocatalytic titanium dioxide nanotube, 5 to 10 percent of long-acting rare-earth noctilucence powder, 15 to 25 percent of pigments, 3 to 5 percent of self-dissolving agent, 2 to 15 percent of dispersing agent, 2 to 5 percent of anti-foaming agent, 1 to 3 percent of sterilizing agent and 3 to 5 percent of calcium carbonate. The photocatalytic titanium dioxide nanotube is prepared in a novel hydrothermal synthesis method, the diameter of the photocatalytic titanium dioxide nanotube is about 5nm to 15nm, the length of the photocatalytic titanium dioxide nanotube is about 100nm, and by adopting the coating, pollutants such as lampblack and harmful gas of NOX compound in the air of a kitchen and a toilet can be resisted. The luminescent photocatalytic coating not only can work at daytime, but also can react at night, and the efficiency of the nano material for purifying the air can be improved.

Description

technical field [0001] The invention relates to a method for preparing nanometer material and its doping in paint, in particular to a method for preparing luminescent titanium dioxide nanotube paint. Background of the invention [0002] Many coatings in the prior art are slightly toxic and difficult to dissolve after hardening. Nanomaterials have a large specific surface area, as well as special pore volume and surface area, so their physical and chemical properties are special, and they have attractive application prospects in the fields of photocatalysis and lithium batteries. Titanium dioxide nanotubes have a wider absorption range for waves than micron-sized titanium dioxide, which is beneficial for photocatalysis. Due to the increasing development of the textile industry and the large increase in water consumption, some enterprises illegally discharge polluted water containing a large amount of organic pollutants, polluted water sources deteriorate the air, and the air...

Claims

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Application Information

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IPC IPC(8): C09D5/22C09D1/00C09D7/12
CPCC09D1/00C09D5/22C09D7/40C09D7/61
Inventor 魏猛杨子昂万军民彭志勤王秉胡智文
Owner 山东力同化工有限公司
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