Nano photo-catalytic modified carbon adsorption-sterilization material and preparing process thereof

A nano-photocatalyst, carbon adsorption technology, applied in chemical instruments and methods, botanical equipment and methods, biocides, etc., can solve the problems of nanoparticle agglomeration failure, dust pollution, nanoparticle agglomeration, etc., to improve adsorption and decomposition efficiency, The effect of reducing consumption

Inactive Publication Date: 2007-05-30
严义清
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The patent application 02139274.9 provides a highly adsorbable photocatalyst and carrier material. This case requires the use of starch. The starch particles cover the surface of the photocatalyst, which greatly affects the catalytic efficiency of the photocatalyst and causes the agglomeration of nanoparticles to fail.
In this case, 300--800 mesh activated carbon particles are used. Because the particles are too small, the processing and production will easily cause dust pollution, and there is a serious risk of explosion. The prepared adsorption material cannot be used alone, and it needs to be combined with a carrier before it can be used. Application The field is very limited
[0004] In the patent application 200310112754, a nano-modified photocatalytic carbon adsorption and sterilization material is provided. The case uses 80--200 mesh powdered carbon, nano-titanium dioxide and its antibacterial agent as raw materials. Due to the small carbon particles, processing The production is easy to cause dust pollution, and there is a serious risk of explosion. The prepared adsorption material is easy to leak when used, causing pollution to the use environment; the nano-titanium dioxide and antibacterial agent used are made of nano-materials when used in emulsion, which is easy to cause nano-materials Particle agglomeration and loss of photocatalytic and antibacterial activity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] a. Cut the trunk of the bamboo into sections, and process it into granular bamboo charcoal of 0.9-50 mm with a conventional pyrolysis process with a final carbonization temperature of 600-950 °C;

[0015] b. the chemically synthesized nano sol containing titanium dioxide in a weight ratio of 0.01%-2.0% is uniformly mixed with the above-mentioned granular bamboo charcoal according to a weight ratio of 0.001-500: 1;

[0016] C. Place the above-mentioned mixture in a container that can be pressurized and vacuumized, and perform pressurization-vacuumization treatment; the pressure for pressurization during the above-mentioned operation is 1×10 2 -2×10 4 Kpa, the vacuum degree during vacuuming is 1×10 4 --1×10 -2 pa, the number of loop operations is 1;

[0017] d. Dry the above-mentioned nano-modified bamboo charcoal material at room temperature to obtain a finished nano-photocatalyst modified carbon adsorption material.

[0018] After testing, the physical and chemical ...

Embodiment 2

[0023] a. The trunk of the bamboo is cut into sections, and processed into 2-5 mm granular bamboo charcoal with a conventional pyrolysis process with a final carbonization temperature of 600°C-700°C;

[0024] b. uniformly mixing the chemically synthesized nano-sol containing titanium dioxide in a weight ratio of 0.01%-0.05% and the above-mentioned granular bamboo carbon according to a weight ratio of 0.05-100:1.

[0025] C. Place the above-mentioned mixture in a pressure vessel capable of pressurization and vacuuming, pressurize and stir at the same time; pressurize during the above-mentioned operation, the pressure is 1×10 2 -6×10 3 Kpa, the number of cycles of the above operations is 2 times.

[0026] d. The nano photocatalyst modified carbon adsorption material is heated and dried to obtain the finished nano photocatalyst modified carbon adsorption material.

Embodiment 3

[0028] a. The trunk of the bamboo is cut into sections, and processed into 6-10 mm granular bamboo charcoal by a conventional pyrolysis process with a final carbonization temperature of 650°C-750°C;

[0029] b. uniformly mixing the chemically synthesized nano-sol containing titanium dioxide in a weight ratio of 1%-2% and the above-mentioned granular bamboo charcoal according to a weight ratio of 100:1.

[0030] C. Place the above-mentioned mixture in a pressure container that can perform pressurization and vacuuming functions, and perform vacuuming treatment during the above-mentioned operation process, and the vacuum degree used is 1×10 5 -1×10 -6 pa.

[0031] d. Drying the nano photocatalyst modified carbon adsorption material at room temperature or by heating. The finished nano photocatalyst modified carbon adsorption material can be prepared.

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Abstract

It relates to the adhesive antibacterial material in environment protection, chemical industry and other areas. This nanometer photo catalytic antibacterial material uses wood, bamboo or shell in carbon particles max. of 0.9-50 mm, heating, pressing, soaking and mixing with synthetic nanometer water solution glue, with titania weight ratio thickness 0.01%-2.0% in the synthetic nanometer photo catalytic water solution glue, and then drying under normal temperature or through heating. Using this more efficient and durable carbon absorbent material, it can realize dissolution of organic pollutants in the micro holes achieving natural regeneration.

Description

【Technical field】 [0001] The invention belongs to the technical field of manufacturing adsorption and sterilization materials in the industries of environmental protection, chemical industry and medical sanitation. 【Background technique】 [0002] In today's world, due to the increasing use of various chemical and biological products, environmental pollution, especially the pollution of indoor toxic and harmful gases is getting worse day by day, which poses a serious threat to people's health. It is an adsorption material that plays a role, effectively removes toxic and harmful gases in the room, and does not produce secondary pollution. Raw materials such as bamboo, wood or fruit shells are heated to decompose them under the condition of isolating the air or introducing a small amount of air to make charcoal (bamboo charcoal, charcoal, shell charcoal, etc.). Charcoal (bamboo charcoal, charcoal, shell charcoal, etc.) has a well-developed pore structure, a large specific surf...

Claims

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Application Information

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IPC IPC(8): B01J21/06B01J20/20A01N59/00
Inventor 严义清
Owner 严义清
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