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Nano-iron and graphene compound purification material and preparation method and application of nano-iron and graphene compound purification material

A technology for graphene composite and purification materials, applied in chemical instruments and methods, separation methods, other chemical processes, etc., can solve the problem of not finding vacancies or dislocations, and achieve the effect of rapid removal and effective sterilization

Active Publication Date: 2014-01-01
XIAMEN RUNNER IND CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, no defects like vacancies or dislocations have been found in graphene

Method used

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  • Nano-iron and graphene compound purification material and preparation method and application of nano-iron and graphene compound purification material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1) Dissolve 20g of ferric chloride and 0.1g of silver nitrate in 20mL of water to prepare an aqueous solution, then add 50g of graphene oxide powder into the above-mentioned aqueous solution containing iron ions and silver ions, stir ultrasonically at room temperature, and the stirring time is 2h, so that iron ions and silver ions are fully exchanged or adsorbed on graphene oxide to form a combination.

[0029] 2) The above-mentioned graphene oxide loaded with iron and silver ions was filtered to remove the residual solution, and then washed with distilled water for 3 times without residual solution, then pre-dried, and dried at 110° C. for 4 hours.

[0030] 3) Put the dried graphene oxide into the reaction sintering furnace. Under the hydrogen reducing atmosphere, the temperature is raised at a rate of 5°C / min. The sintering temperature is 600°C. After holding for 2 hours, it is cooled with the furnace, and the nano Graphene composite purification material of iron and ...

Embodiment 2

[0041] 1) Dissolve 50g of ferric nitrate and 0.5g of silver nitrate in 100mL of water to prepare an aqueous solution, then add 10g of graphene oxide powder into the above-mentioned aqueous solution containing iron ions and silver ions, and stir ultrasonically at room temperature for 10 hours. Make iron ions and silver ions fully exchange or adsorb on graphene oxide to form a combination.

[0042] 2) The above-mentioned graphene oxide loaded with iron and silver ions was filtered to remove the residual solution, and then washed with distilled water for 3 times without residual solution, and then pre-dried at 150°C for 2 hours.

[0043] 3) Put the dried graphene oxide into the reaction sintering furnace, in a carbon monoxide reducing atmosphere, heat up at a rate of 10°C / min, the sintering temperature is 300°C, keep it for 6 hours and then cool down with the furnace. That is, the graphene composite purification material loaded with nano-iron and nano-silver particles is obtained...

Embodiment 3

[0049] 1) Dissolve 30g of ferric chloride and 0.2g of silver nitrate in 50mL of water to prepare an aqueous solution, then add 10g of graphene oxide powder into the above-mentioned aqueous solution containing iron ions and silver ions, and stir ultrasonically at room temperature for a stirring time of 6h, so that iron ions and silver ions are fully exchanged or adsorbed on graphene oxide to form a combination.

[0050] 2) The above-mentioned graphene oxide loaded with iron and silver ions was filtered to remove the residual solution, and then washed with distilled water for 3 times without residual solution, and then pre-dried at 130° C. for 3 hours.

[0051] 3) Put the dried graphene oxide into the reaction sintering furnace, raise the temperature at a rate of 8°C / min in a hydrogen reducing atmosphere, the sintering temperature is 400°C, keep it for 3 hours and then cool down with the furnace. That is, the graphene composite purification material loaded with nano-iron and nan...

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Abstract

The invention relates to the technology of air and water purification, and discloses a nano-iron and graphene compound purification material and a preparation method and the application of the nano-iron and graphene compound purification material. According to the nano-iron and graphene compound purification material, graphene serves as a base body, the base body is loaded with nano-iron and nano-sliver, and the nano-iron and graphene compound purification material comprises, by mass, 20-80% of the nano-iron, 1-2.5% of the nano-silver and 79-17.5% of the graphene. After a soluble iron compound and a soluble sliver compound are mixed to form an aqueous solution, then oxidized graphene powder or an oxidized graphene aqueous solution is added and stirred to enable iron ions and sliver ions to be fully exchanged or be adsorbed on oxidized graphene, then a combination body is obtained, and the oxidized graphene with the iron ions and the sliver ions is obtained; the oxidized graphene with the iron ions and the sliver ions is filtered to remove a residual solution, and is aired and dried after being washed; the dried oxidized graphene is sintered and then is cooled in a furnace so as to obtain the nano-iron and graphene compound purification material. The nano-iron and graphene compound purification material can be coated on other filter media to be used.

Description

technical field [0001] The invention relates to air and water purification technology, in particular to a nano-iron-graphene composite purification material and its preparation method and application. Background technique [0002] Graphene is composed of a layer of carbon atoms arranged in a two-dimensional plane, in which the carbon atoms are connected by sp2 hybridization. Since graphene is composed of pure carbon atoms and has an orderly crystal structure, it has high crystalline quality. So far, no defects such as vacancies or dislocations have been found in graphene. First of all, because graphene is a monoatomic carbon layer, it has a very large specific surface area, and its theoretical value can reach 2600m2 / g; the bond energy between carbon atoms in graphene is very large and has good flexibility. This makes it harder than diamond and its surface bends easily when mechanical force is applied to it. By precisely controlling the pore size of porous graphene and add...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/30C02F1/28B01D53/02
Inventor 余水张恩瑞庄友加李明仁
Owner XIAMEN RUNNER IND CORP
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