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Titanium dioxide photocatalyst coating and film and preparation method thereof

A technology of titanium dioxide and anatase titanium dioxide, which is applied in the field of photocatalyst materials and can solve problems such as inconvenient use

Inactive Publication Date: 2016-12-07
王玲
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the use of titanium dioxide photocatalyst needs to be excited by ultraviolet light sources that are harmful to the human body, which is inconvenient to use

Method used

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  • Titanium dioxide photocatalyst coating and film and preparation method thereof
  • Titanium dioxide photocatalyst coating and film and preparation method thereof
  • Titanium dioxide photocatalyst coating and film and preparation method thereof

Examples

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preparation example Construction

[0050] The application also relates to the preparation method of the titanium dioxide photocatalyst, at least comprising the following steps:

[0051] (1) Mix anatase-type titanium dioxide powder, rare earth element oxide powder and triethyl borate in proportion, grind them, and grind them for 6-15 hours under the condition of 60-100°C to obtain a particle size of 10 nm or less. Nano powder;

[0052] (2) Disperse the prepared nano-powder in an organic solvent to form a sol, and the mass percentage of the nano-powder in the solution is 30-40%, that is, the titanium dioxide photocatalyst is obtained.

[0053] As an improvement of the preparation method of the present application, when the titanium dioxide photocatalyst is also doped with carbon elements, in step (2), the graphene oxide is first configured into a graphene oxide solution, and then the graphene oxide solution is added dropwise to the In the nano-powder, grind for 1-3 hours, then add an organic solvent to continue ...

Embodiment 1

[0065] A kind of titanium dioxide photocatalyst paint, is doped with rare earth element and boron element, and its preparation method is:

[0066] 1. The raw materials for the preparation of titanium dioxide photocatalyst coatings: anatase titanium dioxide powder, rare earth element oxide powder and triethyl borate are weighed in proportion and then mixed. The specific ratio is shown in Table 1; among them, the anatase The anatase phase content of the titanium dioxide powder is ≥90%; the anatase type titanium dioxide is selected as a powder with a D95 of about 5 μm, and the rare earth element oxide is selected as a powder with a D95 of about 5 μm; use a high-energy ball mill to grind at 60 ° C for 12 hours , to obtain nanopowder with particle size below 10nm;

[0067] 2. Disperse the prepared nano-powder in a mixed solvent of acrylic acid ethanol / cyclohexanone (volume ratio 70:30) in an ultrasonic disperser, and the frequency of ultrasonic dispersion is 30KHz; that is, the tit...

Embodiment 2

[0072] A titanium dioxide photocatalyst coating, doped with rare earth elements, boron elements and carbon elements, its preparation method is:

[0073] 1. The raw materials for the preparation of titanium dioxide photocatalyst coatings: anatase titanium dioxide powder, rare earth element oxide powder and triethyl borate are weighed in proportion and then mixed. Among them, the anatase phase content of the anatase titanium dioxide powder is ≥ 90%; the anatase titanium dioxide chooses the powder with D95 of about 5 μm, and the rare earth element oxide chooses the powder with D95 of about 5 μm; use a high-energy ball mill to grind at 60 ° C for 12 hours to obtain nanometer particles with a particle size of less than 10 nm Powder;

[0074] 2. Weigh the graphene oxide in proportion, configure it into an ethanol solution of graphene oxide, then add the graphene oxide solution dropwise into the nanopowder, and grind for 2 hours with a high-energy ball mill, the graphene oxide in the...

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Abstract

The invention relates to the technical field of photocatalyst materials, in particular to a titanium dioxide photocatalyst coating and a film and a preparation method thereof. The titanium dioxide photocatalyst coating is characterized in that rare earth elements and boron element are doped in titanium dioxide photocatalyst, preferably the rare earth elements are selected from at least one of lanthanum, cerium, praseodymium or neodymium, preferably cerium. The doped titanium dioxide photocatalyst coating disclosed by the invention has good response to ultraviolet light, also has excellent response to visible light within a broad range of 460-510 nm, is capable of effectively decomposing formaldehyde, benzene series, chlorides, nitric oxides and has good antibacterial and bactericidal effects.

Description

technical field [0001] The application relates to the technical field of photocatalyst materials, in particular, to a titanium dioxide photocatalyst coating and its film, and a preparation method. Background technique [0002] Photocatalyst is a general term for a photo-semiconductor material with photocatalytic function represented by nano-scale titanium dioxide. It is coated on the surface of the substrate, and under the action of ultraviolet light, it produces a strong catalytic degradation function: it can effectively degrade toxic substances in the air. Harmful gas; can effectively kill a variety of bacteria, and can decompose and harmlessly treat the toxins released by bacteria or fungi; it also has the functions of removing formaldehyde, deodorizing, anti-pollution, and purifying air. [0003] Photocatalyst technology was discovered in 1967 by Professor Kenichi Honda and then graduate student Akira Fujishima of the University of Tokyo in 1967. Under the irradiation of...

Claims

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Application Information

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IPC IPC(8): C09D1/00C09D7/12B01D53/86B01D53/72B01D53/68B01D53/56
CPCB01D53/8625B01D53/8659B01D53/8668B01D2257/91C09D1/00C09D7/61C09D7/63
Inventor 王玲
Owner 王玲
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