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Rapid Preparation of Porous Graphene by Local Combustion

A technology of porous graphene and combustion method, which is applied in the direction of graphene and nano-carbon, which can solve the problems that restrict the large-scale preparation and production of porous graphene, complex equipment requirements, and long synthesis time, so as to save synthesis time and simplify synthesis The effect of simple steps and reaction process

Active Publication Date: 2019-11-19
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these methods require high cost, long synthesis time and complex equipment requirements, which seriously restrict the large-scale preparation of porous graphene and its production and application in the industrial field.

Method used

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  • Rapid Preparation of Porous Graphene by Local Combustion
  • Rapid Preparation of Porous Graphene by Local Combustion

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The preparation of embodiment 1 porous graphene

[0017] Steps:

[0018] 1. First prepare 2 mL of 1 g / L graphene oxide suspension, and ultrasonicate at room temperature for 10 min.

[0019] 2. Weigh 50 mg of zinc nitrate, dissolve it in the above suspension, and sonicate for 2 min.

[0020] 3. Suction filter the above solution with quantitative filter paper.

[0021] 4. Dry the filter paper and residue at 35°C.

[0022] 5. Ignite the filter paper with the residue and sinter until white zinc oxide covered porous graphene appears.

[0023] 6. Wash 4 times with 0.01 mol / L hydrochloric acid and wash 3 times with water to obtain porous graphene.

Embodiment 2

[0024] The preparation of embodiment 2 porous graphene

[0025] Steps:

[0026] 1. First prepare 2 mL of 1 g / L graphene oxide suspension, and ultrasonicate at room temperature for 10 min.

[0027] 2. Weigh 100 mg of zinc nitrate, dissolve it in the above suspension, and sonicate for 2 min.

[0028] 3. Suction filter the above solution with quantitative filter paper.

[0029] 4. Dry the filter paper and residue at 35°C.

[0030] 5. Ignite the filter paper with the residue and sinter until white zinc oxide covered porous graphene appears.

[0031] 6. Wash 4 times with 0.01 mol / L hydrochloric acid and wash 3 times with water to obtain porous graphene.

Embodiment 3

[0032] The preparation of embodiment 3 porous graphene

[0033] Steps:

[0034] 1. First prepare 2 mL of 1 g / L graphene oxide suspension, and ultrasonicate at room temperature for 10 min.

[0035] 2. Weigh 200 mg of zinc nitrate, dissolve it in the above suspension, and sonicate for 4 min.

[0036] 3. Suction filter the above solution with quantitative filter paper.

[0037] 4. Dry the filter paper and residue at 35°C.

[0038] 5. Ignite the filter paper with the residue and sinter until white zinc oxide covered porous graphene appears.

[0039] 6. Wash 4 times with 0.01 mol / L hydrochloric acid and wash 3 times with water to obtain porous graphene.

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Abstract

The invention discloses a method for rapidly preparing porous graphene by a partial burning method. The method comprises the following steps: adding zinc nitrate into a graphene oxide aqueous suspension, ultrasonically dispersing for 2 to 30 min, then performing the rapid suction filtration by utilizing quantitative filter paper, obtaining a graphene oxide compound which is incompletely covered byzinc nitrate water slide layer on the filter paper; and drying the filter paper with the compound at 35 to 55 DEG C, igniting the filter paper on an alcohol lamp, after the black graphene is completely burned, obtaining a compound of zinc oxide nano particles and porous graphene, washing for 1 to 8 times by using strong acid, washing with water, thus obtaining the porous graphene. The burning synthetic method is applied to the preparation of the porous graphene, so that the simple and rapid preparation process of the porous graphene at a low temperature is realized, thereby greatly reducing the preparation cost of the porous graphene, and increasing the utilization efficiency.

Description

technical field [0001] The invention relates to a method for rapidly preparing porous graphene by a partial combustion method. Background technique [0002] Porous graphene has a higher mass transfer efficiency than graphene due to its more defects on the surface, so it plays an important role in the fields of energy batteries, gas storage, biomedicine, and separation analysis. At present, the preparation methods of porous graphene include: ion beam bombardment method, strong alkali etching method, metal thermal etching method, high temperature carbothermal reduction method, aryl-aryl coupling reaction method, etc. However, these methods require high cost, long synthesis time and complex equipment requirements, which seriously restrict the large-scale preparation of porous graphene and its production and application in the industrial field. Contents of the invention [0003] The object of the present invention is to provide a method for rapidly preparing porous graphene b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/184
Inventor 李湛邱洪灯
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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