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Method for preparing oxidized graphene solution

A graphene solution and fossil technology, applied in graphene, chemical instruments and methods, inorganic chemistry, etc., can solve the problems of complex process, unenvironmental protection, poor precision, etc.

Inactive Publication Date: 2018-07-20
程桂平
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The method for preparing graphene oxide solution in the prior art has complicated process, poor precision, and is not environmentally friendly

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A method for preparing graphene oxide solution, comprising:

[0017] Step 1: at room temperature, the concentrated sulfuric acid of 70mL98wt% and the nitric acid solution of 5ml25wt% are mixed, then slowly add 3.0g graphite powder while stirring, then add 1.5g sodium nitrate and 1.1g sodium bisulfate;

[0018] Step 2: move this mixture to an ice bath for cooling, under vigorous stirring, slowly add 9.0g potassium permanganate and 1g potassium nitrate;

[0019] Step 3: after addition finishes, reaction system is transferred to 40 DEG C of water baths, constant temperature stirs, reacts 30 minutes;

[0020] Step 4: Slowly add 150mL deionized water, and the water bath is warmed up to 90°C, reacted for 15 minutes;

[0021] Step 5: add 500mL water again, slowly add the hydrogen peroxide of 15mL30wt%;

[0022] Step 6: Suction filter the resulting mixture and wash with 250mL of 3.5wt% dilute hydrochloric acid to remove metal ions, then wash with 200mL of deionized water to r...

Embodiment 2

[0028] A method for preparing graphene oxide solution, comprising:

[0029] Step 1: at room temperature, the concentrated sulfuric acid of 70mL98wt% and the nitric acid solution of 5ml25wt% are mixed, then slowly add 3.0g graphite powder while stirring, then add 1.5g sodium nitrate and 1.2g sodium bisulfate;

[0030] Step 2: move this mixture to an ice bath for cooling, under vigorous stirring, slowly add 9.0g potassium permanganate and 1g potassium nitrate;

[0031] Step 3: after addition finishes, reaction system is transferred to 40 DEG C of water baths, constant temperature stirs, reacts 30 minutes;

[0032] Step 4: Slowly add 150mL deionized water, and the water bath is warmed up to 90°C, reacted for 15 minutes;

[0033] Step 5: add 500mL water again, slowly add the hydrogen peroxide of 15mL30wt%;

[0034] Step 6: Suction filter the resulting mixture and wash with 250mL of 3.5wt% dilute hydrochloric acid to remove metal ions, then wash with 200mL of deionized water to r...

Embodiment 3

[0040] A method for preparing graphene oxide solution, comprising:

[0041] Step 1: at room temperature, the concentrated sulfuric acid of 70mL98wt% and the nitric acid solution of 5ml25wt% are mixed, then slowly add 3.0g graphite powder while stirring, then add 1.5g sodium nitrate and 1.3g sodium bisulfate;

[0042] Step 2: move this mixture to an ice bath for cooling, under vigorous stirring, slowly add 9.0g potassium permanganate and 1g potassium nitrate;

[0043] Step 3: after addition finishes, reaction system is transferred to 40 DEG C of water baths, constant temperature stirs, reacts 30 minutes;

[0044] Step 4: Slowly add 150mL deionized water, and the water bath is warmed up to 90°C, reacted for 15 minutes;

[0045] Step 5: add 500mL water again, slowly add the hydrogen peroxide of 15mL30wt%;

[0046] Step 6: Suction filter the resulting mixture and wash with 250mL of 3.5wt% dilute hydrochloric acid to remove metal ions, then wash with 200mL of deionized water to r...

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PUM

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Abstract

The invention provides a method for preparing an oxidized graphene solution. The method includes the steps that 1, 70 ml 98 wt% of concentrated sulfuric acid and 5 ml 25 wt% of nitrate solution are mixed at room temperature, then 3.0 g of graphite powder is slowly added under stirring, and then 1.5 g of sodium nitrate and 1.1 g of sodium hydrogen sulfate are added; 2, the mixture is moved into anice bath to be cooled, and 9.0 g of potassium permanganate and 1 g of potassium nitrate are slowly added under violent stirring.

Description

technical field [0001] The invention relates to a method for preparing graphene oxide solution. Background technique [0002] The method for preparing graphene oxide solution in the prior art has complicated process, poor precision and is not environmentally friendly. Contents of the invention [0003] A method for preparing graphene oxide solution, comprising: [0004] Step 1: at room temperature, the concentrated sulfuric acid of 70mL98wt% and the nitric acid solution of 5ml25wt% are mixed, then slowly add 3.0g graphite powder while stirring, then add 1.5g sodium nitrate and 1.1g sodium bisulfate; [0005] Step 2: move this mixture to an ice bath for cooling, under vigorous stirring, slowly add 9.0g potassium permanganate and 1g potassium nitrate; [0006] Step 3: after addition finishes, reaction system is transferred to 40 DEG C of water baths, constant temperature stirs, reacts 30 minutes; [0007] Step 4: Slowly add 150mL deionized water, and the water bath is war...

Claims

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Application Information

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IPC IPC(8): C01B32/198
CPCC01B2204/22
Inventor 程桂平
Owner 程桂平