A PREPARATION METHOD OF GRAPHENE

Linde ZHANG

Patent

Atlas literature

Patent

US 10,266,412

A PREPARATION METHOD OF GRAPHENE

Linde ZHANG

Claims

Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.

1 independent · 2 dependent

1
Independentgraphene oxideH₂Ohydrazine hydrateelectronic amine solutionNa₂S₂O₃united dithionite
1. A method of preparing graphene, comprising: a. Adding graphene oxide in to a dispersant. selected from the group consisting of deionized water, inorganic acid, surfactant solution, high b o iling solvents, and combinations thereof to form a g raphene oxide dispersion h avin g a g rap h ene oxi de concentration of 0.1-1 g/m l; b. Adding the graphene oxide [[-]]dispersant to a microwave oven-and applying microwave energy at 90 0 W, for 5-2 0 minutes or adding a reducing agent selected from the group consisting of electronic am[[m]]ine solution having a mass concentration of 1 00, hydrazine hydrate having a mass concentration of 8 0`%, sodium thiosu l fate, united dithionit eQ phosphite esters, and combinations thereof, to the graphene oxide dispersion at a ratio of 1:1-5 and reﬂuxing for 1 hour to produce a reduced grap h ene oxide dispersion; c. [[a]]Appl y ing a supersonic treatment to the reduced graphene oxide[[-]]dispersant for 0.5-3 hours with a supersonic power of 100-30 0W; and d. Performing suction ﬁltration and dryin g to the reduced graphene oxide dispersion to produce graphene, Currently amended
1. 2
  Dependent← claim 1H₃PO₄H₂SO₄cetyltrimethylammonium bromide aqueous solutiontetrabutyl ammonium bromide aqueous solutionC₃H₈O₃C₂H₆O₂
  2. The method of claim 1, wherein the inorganic acid in step.a) is selected from the group consisting of, strong phosphoric acid, concentrated sulfuric acid s[[,]] the surfactant in step a is selected from the group consisting of cet y ltrimethyl ammoniu m bromide a queous solution with a mass concentration of 5%, tetra[[]]butyl ammonium bromide aqueous solution wi th a mass concentration of 5%, and wherein the high boiling point solvent is selected from the group consisting of glycerol, g l yco l and N-methyl -2-py rrolidone. Currently amended
2. 3
  Dependent← claim 1electronic amine solutionhydrazine hydratephosphite esters
  3. (Cur rently Amended) The method of claim 1, wherein the reducing agent in step b) is selected f r om the group consisting of h y drazine hydrate with a mass concentration of 80 %, electronic am [[m]]ine solution with a mass concent r ation of 1%, u nited dithionite and combinations the r eof. Currently amended

Materials

Materials described outside the worked examples.

graphene oxide

Precursor

deionized water

H₂O

Dispersant

Process steps

Additional fabrication and treatment steps described in the patent.

Chemical Reduction

Step 1

Duration

60 min

Process details

dispersants:

Reported properties

Performance values and ranges asserted in the specification or claims.

Property	Value	Material
Duration	0.5–3 hours	—
—

Why these are connected

Related documents with shared materials, methods, properties, or citations.

A PREPARATION METHOD OF GRAPHENE | Matter42 Literature