Nano-silver-loaded microcrystal bamboo charcoal ceramic bead and preparation method thereof

A technology of microcrystalline bamboo charcoal and nano-silver, which is applied in separation methods, chemical instruments and methods, and other chemical processes, and can solve the problems that the superior performance of nano-silver has not been fully utilized, drug resistance cannot be produced, and the specific surface area is not large enough. , to achieve the effects of no environmental pollution, convenient application, and less strict temperature control

Active Publication Date: 2015-03-25
桂林良物造环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

4) No drug resistance: Nano-silver is a non-antibiotic bactericide, which quickly and directly kills bacteria and makes them lose their ability to reproduce. Therefore, it is impossible to produce the next generation of drug-resistant
[0009] At present, there are products on the market that use porous ceramics to support nano-silver, but the specific surface area of ​​such ordinary porous ceramics is not large enough, and the adsorption function is not enough, so the superior performance of nano-silver has not been fully utilized, and precious metals are wasted.

Method used

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  • Nano-silver-loaded microcrystal bamboo charcoal ceramic bead and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Preparation of microcrystalline bamboo charcoal ceramic beads

[0042] The raw materials are uniformly mixed according to the ratio, and water is added in the granulator to granulate into spherical particles of different sizes.

[0043] The bamboo charcoal powder, porous non-metallic mineral powder and clay have an average particle size of 1-10 μm. Zeolite is used for porous non-metallic minerals, and kaolin is used for clay. Mix the ingredients according to the ratio of bamboo charcoal 40%, porous mineral 30%, clay 25% and binder 5%. Add water and starch in the granulator to form spherical granules with a particle size of 0.5mm~5mm. The granules are then air-dried for 24 hours, and then dried in a drying oven at a temperature of 90℃ for 4 hours, and then sintered without oxygen. It is 1250°C, kept for 30 minutes, and cooled naturally to obtain ceramic pellets. The performance indexes of ceramic pellets are shown in Table 1.

[0044] Table 1

[0045]

Embodiment 2

[0047] Add nano silver to the silica sol aqueous dispersion (containing 30% silica), stir vigorously to form a suspension, and then put the microcrystalline bamboo charcoal ceramic beads obtained in Example 1 into the suspension, and stir slowly to make the microcrystalline bamboo charcoal The surface of the ceramic beads is evenly coated, and then the microcrystalline bamboo charcoal ceramic beads are taken out and dried in air for 4 hours, and then dried in vacuum at 60°C.

Embodiment 3

[0049] Add nano-silver into the silica sol water dispersion (containing 30% silica), ultrasonically form a suspension, and then put the microcrystalline bamboo charcoal ceramic beads obtained in Example 1 into the suspension, and stir slowly to make the microcrystalline bamboo charcoal ceramic The surface of the beads is evenly coated, and then the microcrystalline bamboo charcoal ceramic beads are taken out and air-dried for 4 hours, and then dried at 200°C.

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Abstract

The invention relates to a nano-silver-loaded microcrystal bamboo charcoal ceramic bead and a preparation method thereof. The nano-silver-loaded microcrystal bamboo charcoal ceramic bead is prepared from nano-silver and a microcrystal bamboo charcoal ceramic bead by virtue of surface compounding, wherein the microcrystal bamboo charcoal ceramic bead is prepared from the following components by weight percent: 30%-50% of bamboo charcoal powder, 30%-40% of porous nonmetal mineral powder, 20%-30% of clay and 2%-5% of an adhesive. According to the preparation method, the microcrystal bamboo charcoal ceramic bead is coated with nano-silver, so that nano-silver has a strong support body, doped nano-structure silver is further formed, and the catalytic efficiency of nano-silver is further improved; the microcrystal bamboo charcoal ceramic bead is high in structural strength and can resist high temperature, so that the microcrystal bamboo charcoal ceramic bead can be regenerated by virtue of a roasting manner after being used for a long time, and the adsorption capability and the catalytic degradation and killing effects are recovered; compared with porous-ceramic-loaded nano-silver, the nano-silver-loaded microcrystal bamboo charcoal ceramic bead has relatively good effects in the aspects of water quality purification, air purification and the like, furthermore, the preparation method is simple, and the application is convenient.

Description

Technical field [0001] The invention relates to purification materials, in particular to microcrystalline bamboo charcoal ceramic beads carrying nano-silver and a preparation method thereof. This kind of microcrystalline bamboo charcoal ceramic beads loaded with nano-silver has a good effect in purifying water and air. Background technique [0002] Bamboo charcoal has a rich honeycomb-like microporous structure. This microporous structure gives bamboo charcoal a huge specific surface area, excellent adsorption function, electromagnetic shielding, radiation far infrared, generation of negative ions, increase water alkalinity and other special effects. It is used for moisture absorption, deodorization, disinfection, sterilization, heat storage, humidity control, and improvement of the living environment. When the environmental humidity is high, bamboo charcoal uses its hygroscopic effect to absorb moisture in the indoor air; on the contrary, when the environmental humidity is very...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30B01D53/02C02F1/28
CPCB01D53/02B01J20/02B01J20/12B01J20/20B01J23/50C02F1/283C02F1/288
Inventor 韦仲华韦宇洪韦冬芳
Owner 桂林良物造环境科技有限公司
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