Adhering coating process of photocatalyst and fixed bed base material

A photocatalyst and coating process technology, applied in coatings, devices for coating liquids on surfaces, pretreatment surfaces, etc. Surface area, large catalytic oxidation contact surface, and the effect of ensuring effective porosity

Inactive Publication Date: 2019-10-15
浙江森井生物技术股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The photocatalytic fixed bed material agent made by the above two methods has poor adhesion effect, and the photocatalyst is easy to fall off when the temperature changes.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A kind of adhesive coating process of photocatalyst and fixed bed base material, the step of adhesive coating process is as follows:

[0034] S1: Fully coat the fixed bed substrate with the water-based adhesive, take it out and let it dry naturally in a dust-free environment;

[0035] S2: The fixed bed base material after step S1 is air-dried is coated with photocatalyst; The fixed bed base material adopts three-dimensional structural nickel foam;

[0036] S3: After the photocatalyst coating process is completed, dry in a medium temperature oven at 250-300°C for 1.5h;

[0037] S4, repeat steps S2 and S31 times.

[0038] Specifically, the conditions of the dust-free environment in step S1 are: ambient temperature ≤ 22°C, ambient humidity ≤ RH55%, the coating amount is 0.2g / cm2, and the water-based adhesive is processed from the following raw materials in mass percentage: 28% ethyl orthosilicate, 21% dehydrated alcohol, 1% hydrochloric acid, the balance is deionized wat...

Embodiment 2

[0053] A kind of adhesive coating process of photocatalyst and fixed bed base material, the step of adhesive coating process is as follows:

[0054] S1: Fully soak the fixed bed substrate in the water-based adhesive, take it out and let it dry naturally in a dust-free environment;

[0055] S2: soak the photocatalyst in the fixed bed substrate after step S1 is air-dried; the fixed bed substrate is made of aluminum foam:

[0056] S3: After the process of coating or immersing the photocatalyst is completed, dry it in a medium temperature oven at 550-600°C for 1 hour:

[0057] S4, repeat steps S2 and S302 times.

[0058] Specifically, the conditions of the dust-free environment in step S1 are: ambient temperature ≤ 22°C, ambient humidity ≤ RH55%, step S1 uses soaking, soaking time is 20S, and the water-based adhesive is processed from the following raw materials in mass percentage Component: 38% tetraethyl orthosilicate, 31% dehydrated alcohol, 2% hydrochloric acid, the balance is...

Embodiment 3

[0073] A kind of adhesive coating process of photocatalyst and fixed bed base material, the step of adhesive coating process is as follows:

[0074] S1: Fully soak the fixed bed substrate in the water-based adhesive, take it out and let it dry naturally in a dust-free environment;

[0075] S2: soak the photocatalyst in the fixed bed base material after the air-drying in step S1; the fixed bed base material is a porous ceramic material;

[0076] S3: After the process of immersing the photocatalyst is completed, dry it in a medium-temperature oven at 400-450°C for 1.2 hours;

[0077] S4, repeat steps S2 and S32 times.

[0078] Specifically, the conditions of a dust-free environment in step S1 are: ambient temperature ≤ 22°C, ambient humidity ≤ RH55%, step S1 uses soaking, soaking time is 30S, and the composition of the water-based adhesive is: 33% orthosilicone Acetate ethyl ester, 26% absolute ethanol, 1.5% hydrochloric acid, the balance is deionized water, the sum of raw mat...

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PUM

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Abstract

The invention relates to an adhering coating process of a photocatalyst and a fixed bed base material. The process comprises the following steps that S1, the fixed bed base material is fully coated with or soaked in a water-based adhesive, and natural air drying is carried out in a dust-free environment after the fixed bed base material is taken out; S2, the air-dried fixed bed base material obtained in the step S1 is coated with or soaked in the photocatalyst, wherein the fixed bed base material comprises three-dimensional-structure foamed nickel, foamed aluminum or a porous ceramic material;S3, after the process that the fixed bed base material is coated with or soaked in the photocatalyst is finished, the fixed bed base material is placed in a medium-temperature drying oven at the temperature of 250-600 DEG C for drying for 1-1.5 hours; and S4, the step S2 and the step S3 are repeatedly carried out 0-N times, wherein N is a natural number greater than or equal to 1. The adhering coating process has the beneficial effects that a three-dimensional foamed nickel plate is a carrier of the photocatalyst and is an anode as well, and the three-dimensional foamed nickel plate has largespecific surface area, good light penetrability and medium liquidity; and meanwhile, an electric field is used for pulling transition electrons into a cathode, so that the effective electron hole rate is ensured, and the photocatalytic efficiency is improved.

Description

technical field [0001] The invention relates to an adhesive coating process of a catalyst and a base material, in particular to an adhesive coating process of a photocatalyst and a fixed bed base material. Background technique [0002] As a non-toxic, harmless and non-toxic static environmental protection treatment material that does not produce secondary pollution, photocatalyst has been widely used in environmental protection treatment fields such as indoor air purification, industrial waste gas, domestic sewage, and industrial sewage. However, there is no effective bonding and coating method between the photocatalyst and the fixed bed substrate, and the method of bonding and coating after mixing the adhesive and the photocatalyst is generally used, resulting in a large amount of photocatalyst being covered by the adhesive and reducing the specific surface area. Small, the photocatalyst cannot fully act under visible light, a large amount of solar energy is lost, and the d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D7/14B05D7/00B05D5/06B05D3/02
CPCB05D3/0218B05D3/0254B05D5/06B05D7/14B05D7/546B05D2202/20B05D2202/25B05D2203/30B05D2401/20B05D2451/00B05D2518/00B05D2518/10B05D2420/01B05D2425/02B05D2420/02B05D2425/01
Inventor 包禾欣
Owner 浙江森井生物技术股份有限公司
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