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Purification method for graphene oxide and graphene oxide

A purification method and graphene technology, applied in chemical instruments and methods, ion exchange column/bed methods, inorganic chemistry, etc., can solve the problems of poor purification effect and high content of heteroions

Active Publication Date: 2016-07-13
湖北高地石墨烯科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the purification effect is not good, and the content of heteroions is still high

Method used

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  • Purification method for graphene oxide and graphene oxide
  • Purification method for graphene oxide and graphene oxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0097] ion exchange purification

[0098] B1, configuring the graphene oxide to be purified into a graphene oxide solution with a solid content of 0.2%;

[0099] B2, the hydrogen type strong acid cation resin and the hydroxide type strong base anion exchange resin are loaded into the ion exchange column, the cation exchange resin is set in the upper section, and the anion exchange resin is set in the lower section;

[0100] B3, sending the graphene oxide solution into the ion exchange column; the flow rate of the graphene oxide solution is 200L / h.

Embodiment 2

[0102] ion exchange purification

[0103] B1, configuring the graphene oxide to be purified into a graphene oxide solution with a solid content of 0.5%;

[0104] B2, the hydrogen type weak acid cation resin and the hydroxide type weak base anion exchange resin are loaded into the ion exchange column, the cation exchange resin is set in the upper section, and the anion exchange resin is set in the lower section;

[0105] B3, sending the graphene oxide solution into the ion exchange column; the flow rate of the graphene oxide solution is 50L / h.

Embodiment 3

[0107] ion exchange purification

[0108] B1, configuring the graphene oxide to be purified into a graphene oxide solution with a solid content of 0.3%;

[0109] B2, the hydrogen type weak acid cation resin and the hydroxide type weak base anion exchange resin are loaded into the ion exchange column, the cation exchange resin is set in the upper section, and the anion exchange resin is set in the lower section;

[0110] B3, sending the graphene oxide solution into the ion exchange column; the flow rate of the graphene oxide solution is 120L / h.

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Abstract

The invention discloses a purification method of graphene oxide and the graphene oxide. The purification method of the graphene oxide comprises the following step: performing ionic exchange purification, namely, passing a graphene oxide solution through cation exchange resin and anion exchange resin in sequence, wherein the cation exchange resin is hydrogen type cation exchange resin; the anion exchange resin is hydrogen-oxygen type anion exchange resin. The purification method disclosed by the invention has the advantages of simplicity of operation and high purification efficiency, the content of each metal impurity in the purified graphene oxide is less than 10ppm, and in addition, the used ionic exchange resin can be regenerated and repeatedly used, thus achieving energy-saving and environment-friendly effects.

Description

technical field [0001] The invention relates to the field of graphene materials, in particular to a method for purifying graphene oxide and graphene oxide. Background technique [0002] Graphene oxide is the product of chemical oxidation of graphite powder, and it is a new type of carbon material with excellent performance. Graphene oxide is an important intermediate for the chemical preparation of graphene. In addition, graphene oxide has a high specific surface area and abundant functional groups on the surface, which can be used to compound with other materials to prepare composite materials. [0003] Graphene oxide will inevitably introduce a large number of impurity ions during the preparation process, such as heavy metal ions such as manganese ions, iron ions, and nickel ions, as well as sodium ions and potassium ions. The content of impurities in graphene oxide has an important impact on its own performance and its follow-up products (such as graphene, graphene oxid...

Claims

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Application Information

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IPC IPC(8): C01B31/04
CPCB01J47/04B01J39/05B01J49/53B01J49/57B01J49/60C01B32/196B01J39/07B01J41/07B01J41/05B01J20/205C01B32/198
Inventor 张麟德
Owner 湖北高地石墨烯科技有限公司
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