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Graphene antibacterial carbon sphere, and preparation method and application thereof

A graphene and graphene composite technology, applied in the field of activated carbon, can solve problems such as limiting adsorption performance, and achieve the effect of increasing antibacterial effect and excellent antibacterial effect

Inactive Publication Date: 2020-03-06
NANTONG QIANGSHENG GRAPHENE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, activated carbon is mostly microporous, which limits its adsorption performance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A graphene antibacterial carbon sphere, comprising each component of the following mass percentages:

[0035] Graphene grafted carbon powder (graphene content 4%) 80%;

[0036] Emulsifier (sodium carboxylate) 15%;

[0037] Additive (diethylenetriamine) 5%.

[0038] The concrete preparation method of described graphene antibacterial carbon sphere is as follows:

[0039] 1. Preparation of graphene-grafted carbon powder

[0040] A1, carbon powder activation: carbon powder (husk charcoal) is dispersed in the nitric acid solution that mass fraction is 15%, reflux treatment at 60 ℃ for 3 hours, then filter, wash, dry to obtain acid-treated activated carbon; The specific surface area of ​​activated carbon is 1500-2200m 2 / g, particle size 10-100μm;

[0041] A2, preparation of modified graphene: graphene is added into deionized water (configured according to concentration of 0.1%), ultrasonic treatment at room temperature, then add surfactant (stearic acid, add-on is 5% of...

Embodiment 2

[0047] A graphene antibacterial carbon sphere, comprising each component of the following mass percentages:

[0048] Graphene grafted carbon powder (graphene content 5%) 87%;

[0049] Emulsifier (N-dodecyldimethylamine) 12.9%;

[0050] Additive (lysine) 0.1%.

[0051] The concrete preparation method of described graphene antibacterial carbon sphere is as follows:

[0052] 1. Preparation of graphene-grafted carbon powder

[0053]A1, carbon powder activation: carbon powder (biomass charcoal) is dispersed in the nitric acid solution that mass fraction is 15%, reflux treatment at 80 ℃ for 2 hours, then filter, wash, dry to obtain acid-treated activated carbon; The specific surface area of ​​activated carbon is 1500-2200m 2 / g, particle size 10-100μm;

[0054] A2, preparation of modified graphene: adding graphene to deionized water (configured according to the concentration of 0.1%), ultrasonic treatment at room temperature, and then adding surfactant (dodecylpyrrolidone, the ...

Embodiment 3

[0060] A graphene antibacterial carbon sphere, comprising each component of the following mass percentages:

[0061] Graphene grafted carbon powder (graphene content 8%) 90%;

[0062] Emulsifier (polyoxypropylene ether) 5%;

[0063] Additives (diethylenetriamine, sodium hexametaphosphate 5:5 mix) 5%.

[0064] The concrete preparation method of described graphene antibacterial carbon sphere is as follows:

[0065] 1. Preparation of graphene-grafted carbon powder

[0066] A1, carbon powder activation: carbon powder (coal-based activated carbon) is dispersed in the nitric acid solution of 15% by mass fraction, reflux treatment at 90 DEG C for 0.5 hour, then filtered, cleaned and dried to obtain acid-treated activated carbon; The specific surface area of ​​activated carbon is 1500-2200m 2 / g, particle size 10-100μm;

[0067] A2, preparation of modified graphene: graphene is added into deionized water (configured as 0.1% by concentration), normal temperature ultrasonic treatme...

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Abstract

The invention relates to a graphene antibacterial carbon sphere, and a preparation method and an application thereof. The carbon sphere is prepared from the following components in percentages by mass: 80-90% of graphene grafted carbon powder, 5-15% of an emulsifier and 0.1-5% of an additive. According to the invention, by adoption of carbon powder activation and graphene modification, graphene hydroxyl functional groups can be easily grafted with nitro functional groups on active carbon powder; graphene grafted carbon is generated through a high-temperature reaction under the protection of nitrogen gas; meanwhile, porous carbon can easily generated; and the surface area of a final product can be easily increased. The graphene compounded active carbon prepared by using the preparation method provided by the invention has excellent antibacterial and odor-removing functions and the like, and can be extensively applied to places like family living rooms, kitchens, toilets, refrigerators and washing machines.

Description

technical field [0001] The invention relates to the technical field of activated carbon, in particular to a graphene antibacterial carbon sphere and its preparation method and application. Background technique [0002] As an excellent adsorption material, activated carbon is often used in air purification, water purification, industrial waste gas recovery, etc. Its application scope involves chemical industry, food processing, agriculture, national defense and other fields, and plays an important role in environmental protection and human life. The adsorption properties of activated carbon depend on its well-developed pore structure and unique surface chemistry. However, activated carbon is mostly microporous, which limits its adsorption performance. [0003] Since Graphene was prepared by mechanical exfoliation in 2004 and its unique physical properties were revealed, scientists in the fields of physics, chemistry, materials, electronics and engineering in the world have i...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/28B01J20/30C01B32/194C01B32/312C01B32/354B01D49/00B01D53/02A01N59/00A01P1/00
CPCB01J20/20B01J20/205B01J20/28004B01J20/28019B01J20/2808B01D53/02B01D49/00C01B32/312C01B32/354C01B32/194A01N59/00B01D2253/102B01D2257/90
Inventor 沙嫣沙晓林
Owner NANTONG QIANGSHENG GRAPHENE TECH CO LTD
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