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Immobilized visible light response photocatalyst and preparation method thereof

A photocatalyst and visible light technology, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc. Restricting practical application and other issues, to achieve the effect of expanding the application field and scope, low cost of use, and firm adhesion

Active Publication Date: 2014-04-02
广州安坦科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the coating film is too thin, the contact area with pollutants is limited, and it is easy to fall off under the action of external force, which cannot play the role of photocatalyst, and its use is greatly restricted.
[0006] 3. The above-mentioned photocatalyst needs to be supplemented with ultraviolet light to reflect the effect of photocatalyst on degrading pollutants, which limits its practical application

Method used

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  • Immobilized visible light response photocatalyst and preparation method thereof
  • Immobilized visible light response photocatalyst and preparation method thereof
  • Immobilized visible light response photocatalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Photocatalytic material: 30 grams

[0043] Cerium-zirconium material (calculated as cerium-zirconium solid solution): 20 grams

[0044] Mixed lanthanum and praseodymium: 10 grams

[0045] Polyaluminum: 25 grams

[0046] Silicon magnesium oxide (calculated as magnesium silicate): 15 grams

[0047] Water: 40 grams

[0048] Step A: Weigh the above-mentioned materials, mix them uniformly first, and then disperse them in a grinder for 12 hours, take out the ground material liquid and adjust its pH to 6.5 to obtain a colloidal slurry;

[0049] Step B: Select a ceramic or metal material with a suitable shape and size as a carrier, and clean up the oil, dirt, impurities, etc. on the surface;

[0050] Step C: According to the shape and structure of the carrier, apply the colloidal slurry on the carrier by dipping, spraying, brushing, etc., and remove the excess material liquid attached to the carrier to form a layer on the skeleton carrier Uniform and continuous coating lay...

Embodiment 2

[0053] Photocatalytic material: 55 grams

[0054] Cerium-zirconium material (calculated as cerium-zirconium solid solution): 15 grams

[0055] Mixed lanthanum and praseodymium: 5 grams

[0056] Polyaluminium: 15 grams

[0057] Silicon magnesium oxide (calculated as magnesium silicate): 10 grams

[0058] Water: 60 grams

[0059] Step A: Weigh the above-mentioned materials, first mix them uniformly, and then disperse them in a grinder for 20 hours, take out the ground material liquid and adjust its pH to 8.5 to obtain a colloidal slurry;

[0060]Step B: select a ceramic or metal material of suitable shape and size as a carrier, and clean up oil, dirt, impurities, etc. on its surface;

[0061] Step C: According to the shape and structure of the carrier, apply the colloidal slurry on the carrier by dipping, spraying, brushing, etc., and remove the excess material liquid attached to the carrier to form a layer on the skeleton carrier Uniform and continuous coating layer with a...

Embodiment 3

[0064] Photocatalytic material: 40g

[0065] Cerium-zirconium material (calculated as cerium-zirconium solid solution): 18 grams

[0066] Mixed lanthanum and praseodymium: 8 grams

[0067] Polyaluminium: 20 grams

[0068] Silicon magnesium oxide (calculated as magnesium silicate): 14 grams

[0069] Water: 50 grams

[0070] Step A: Weigh the above-mentioned materials, first mix them uniformly, and then disperse them in a grinder for 16 hours, take out the ground material liquid and adjust its pH to 7 to obtain a colloidal slurry;

[0071] Step B: select a ceramic or metal material of suitable shape and size as a carrier, and clean up oil, dirt, impurities, etc. on its surface;

[0072] Step C: According to the shape and structure of the carrier, apply the colloidal slurry on the carrier by dipping, spraying, brushing, etc., and remove the excess material liquid attached to the carrier to form a layer on the skeleton carrier Uniform and continuous coating layer with a liqui...

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Abstract

The invention provides an immobilized visible light response photocatalyst and a preparation method thereof. The immobilized visible light response photocatalyst comprises the raw materials in parts by weight: 30-55 parts of a photocatalysis material, 15-20 parts of a cerium-zirconium solid solution, 5-10 parts of mixed lanthanum praseodymium, 15-25 parts of polyaluminium chloride, 10-15 parts of silicon magnesium oxide and 40-60 parts of water. The sum of the parts of the photocatalysis material, the cerium-zirconium solid solution, the mixed lanthanum praseodymium, the polyaluminium chloride and the silicon magnesium oxide is 100. The immobilized visible light response photocatalyst has the beneficial effects that a material framework with different shapes is used as a carrier of the photocatalyst; the catalyst is adsorbed to the carrier and is immobilized into an integrated structure; the method for using the photocatalyst in the form of powder or a solution is changed; the operation of separating the photocatalyst from a substrate is eliminated; possible secondary pollution is avoided.

Description

technical field [0001] The invention relates to a catalyst for environmental protection and a preparation method thereof, in particular to a catalyst capable of harmlessly degrading gas-phase toxic and harmful pollutants in the environment under light conditions and a preparation method thereof. Background technique [0002] Photocatalysts can completely degrade pollutants (especially organic pollutants) in the atmosphere and water into substances that are harmless to the environment and the human body. More and more attention has been paid to environmental pollution control. It is the most effective and promising environmental protection method. technology. Existing photocatalysts are mainly used in the form of solution or powder. When in use, the photocatalyst is mixed with pollutants, and then irradiated with ultraviolet light to finally decompose the pollutants into harmless substances, so as to purify pollutants and protect the environment role. [0003] The above-men...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/31B01J35/10A62D3/17A62D101/20A62D101/26A62D101/28
Inventor 石江潭
Owner 广州安坦科技有限公司
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