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A graphene nanolayer for photoelectric degradation

A technology for photoelectric degradation and graphene, applied in the field of graphene, can solve problems such as restricting degradation efficiency, and achieve the effects of ensuring generation rate, improving thermal conductivity, and improving photoelectric degradation effect.

Active Publication Date: 2018-07-13
SHAOXING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Problems such as holes and vacancy defects in graphene affect the electron conduction velocity and heat conduction velocity of graphene, greatly restricting its degradation efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A graphene nano-layer for photoelectric degradation, its formula is as follows: 100 parts of graphite, 10 parts of dispersant, 2 parts of nano-calcium carbonate modifier, 150 parts of ethanol aqueous solution, 120 parts of graphite expansion solution, 110 parts of oxidation solution, carboxylate 18 parts of acid modifier.

[0031] The dispersant adopts polyvinylpyrrolidone.

[0032] The ethanol content in the ethanol aqueous solution is 30%.

[0033] The graphite expansion liquid adopts concentrated sulfuric acid solution added with potassium peroxodisulfate and phosphorus pentoxide, and the mass ratio of potassium peroxodisulfate, phosphorus pentoxide and concentrated sulfuric acid is 1:1:3.

[0034] Described oxidation liquid adopts the acetic acid aqueous solution that adds chitosan, potassium permanganate, and described chitosan is 0.2g / L, and potassium permanganate is 0.3g / L, and the acetic acid content of described acetic acid aqueous solution is 5% .

[0035] ...

Embodiment 2

[0048] A graphene nano-layer for photoelectric degradation, its formula is as follows: 100 parts of graphite, 15 parts of dispersant, 8 parts of nano-calcium carbonate modifier, 200 parts of ethanol aqueous solution, 150 parts of graphite expansion solution, 170 parts of oxidation solution, carboxylate 26 parts of acid modifier.

[0049] The dispersant is sodium lauryl sulfate.

[0050] The ethanol content in the ethanol aqueous solution is 76%.

[0051] The graphite expansion liquid adopts concentrated sulfuric acid solution added with potassium peroxodisulfate and phosphorus pentoxide, and the mass ratio of potassium peroxodisulfate, phosphorus pentoxide and concentrated sulfuric acid is 1:1.2:6.

[0052] Described oxidation liquid adopts the acetic acid aqueous solution that adds chitosan, potassium permanganate, and described chitosan is 0.35g / L, and potassium permanganate is 0.55g / L, and the acetic acid content of described acetic acid aqueous solution is 11% .

[0053...

Embodiment 3

[0066] A graphene nano-layer for photoelectric degradation, its formula is as follows: 100 parts of graphite, 13 parts of dispersant, 5 parts of nano-calcium carbonate modifier, 170 parts of ethanol aqueous solution, 150 parts of graphite expansion solution, 140 parts of oxidation solution, carboxylate 22 parts of acid modifier.

[0067] The dispersant adopts polyvinylpyrrolidone.

[0068] The ethanol content in the ethanol aqueous solution is 56%.

[0069] The graphite expansion liquid adopts concentrated sulfuric acid solution added with potassium peroxodisulfate and phosphorus pentoxide, and the mass ratio of potassium peroxodisulfate, phosphorus pentoxide and concentrated sulfuric acid is 1:1.1:5.

[0070] Described oxidation liquid adopts the acetic acid aqueous solution that adds chitosan, potassium permanganate, and described chitosan is 0.3g / L, and potassium permanganate is 0.42g / L, and the acetic acid content of described acetic acid aqueous solution is 8% .

[007...

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Abstract

The invention discloses a graphene nano layer for photoelectric degradation. A formula of the graphene nano layer is prepared from 100 parts of graphite, 10 to 15 parts of dispersing agent, 2 to 8 parts of modifier, 150 to 200 parts of aqueous solution of ethanol, 120 to 150 parts of graphite expansion liquid, 110 to 170 parts of oxidation liquid and 18 to 26 parts of carboxylic acid modifier. By using the graphene nano layer disclosed by the invention, holes, vacancy defects and the like of graphene are effectively repaired, the conduction efficiency of the graphene nano layer is greatly improved, and the photoelectric degradation rate is increased.

Description

technical field [0001] The invention belongs to the technical field of graphene, in particular to a graphene nano-layer for photoelectric degradation. Background technique [0002] Graphene is a two-dimensional crystal composed of carbon atoms with only one atomic thickness. In 2004, Andre Geim and Konstantin Novoselov, physicists at the University of Manchester, successfully separated graphene from graphite and confirmed that it can exist alone. Bell Prize in Physics. [0003] Before the discovery of boronene in late 2015, graphene was both the thinnest material and the strongest, with a breaking strength 200 times stronger than the best steel. At the same time, it has good elasticity, and the stretching range can reach 20% of its own size. It is currently the thinnest and strongest material in nature. If a piece of graphene with an area of ​​1 square meter is used to make a hammock, it can bear a cat weighing one kilogram with a weight of less than one milligram. [00...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/184
CPCC01P2006/32C01P2006/40
Inventor 刘伟
Owner SHAOXING UNIVERSITY