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Preparation method of graphene modified activated carbon air filtering material

A technology of graphene modification and activated carbon, which is applied in separation methods, chemical instruments and methods, filtration and separation, etc. It can solve the problems of inability to guarantee graphene and low drying temperature

Inactive Publication Date: 2017-12-22
HANGZHOU GAOXI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is to prepare a dual-motor superelectric appliance by electrochemically reducing graphene oxide. The drying temperature of the material is relatively low, and it cannot guarantee that the efficiency of graphene can be fully utilized. It is not practical for gas adsorption and air purification. value

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] First, 100.0g of activated carbon was pulverized, and then dispersed into 1000mL of isopropanol with 10.0g of graphene to form a mixed solution. The mixed solution was stirred at 74°C for 50min at a stirring rate of 100r / min, and then the hydrothermally reacted The product is filtered and vacuum-dried at 150° C. for 1 hour to obtain a graphene-modified activated carbon air filter material.

Embodiment 2

[0022] First, after pulverizing 100.0g of activated carbon, disperse it with 0.1g of graphene and 0.5g of expanded graphite into 1000mL of methanol to form a mixed solution, stir the mixed solution at 30°C for 30min at a stirring rate of 200r / min, then add water The product of the thermal reaction is filtered and vacuum-dried at 150° C. for 1 hour to obtain a graphene-modified activated carbon air filter material.

Embodiment 3

[0024] First, after pulverizing 10.0g of activated carbon, disperse 1.0g of graphene into 10L of water, methanol, ethanol and isopropanol (v / v / v / v=1:1:1:1) mixed solvent to form a mixed solution , the mixed solution was stirred at 20°C for 3h at a stirring rate of 400r / min, and then the product of the hydrothermal reaction was filtered and vacuum-dried at 150°C for 4h to obtain a graphene-modified activated carbon air filter material.

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Abstract

The invention discloses a preparation method of a graphene modified activated carbon air filtering material. The preparation method comprises the following steps: crushing activated carbon, and dispersing the activated carbon and graphene into a solvent to form a mixed solution; then treating the mixed solution by a spraying method or a hydrothermal method to obtain the graphene modified activated carbon air filtering material. The method provided by the invention is simple in process and simple and convenient in operation, the prepared product has excellent adsorption efficacy, the iodine value can reach 1500 or more, the iodine value is increased by 50 to 80 percent compared with that of the traditional untreated activated carbon, the purification efficiency is improved and the air quality is effectively improved.

Description

Technical field [0001] The invention relates to the field of activated carbon-based composite materials, in particular to a method for preparing a graphene-modified activated carbon air filter material. Background technique [0002] Activated carbon material is amorphous carbon obtained through processing, has a large specific surface area, and has a certain adsorption capacity for gases, inorganic or organic substances in solution, and colloidal particles. The air purification ability of the activated carbon currently on the market depends on the degree of development of the pore structure of the activated carbon. Its iodine value is generally 800-1000, the duration is short, and the adsorption performance is not high. [0003] Graphene is a single atomic layer, including graphene, single-layer graphene oxide, double-layer graphene oxide, multi-layer graphene oxide, etc. Its lateral size can be extended to tens of microns, and its specific surface area is very high. Air ad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/06
CPCB01D39/06
Inventor 高超江腾腾孙海燕
Owner HANGZHOU GAOXI TECH CO LTD
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