Production of nano-structures
First Claim
Patent Images
1. A process for production of nano-structures, comprising:
- providing a graphite flake comprising graphene layers;
intercalating the graphite flake to form a graphite intercalation compound exhibiting Stage I, II or III intercalation;
exfoliating the graphite intercalation compound by exposing it to a temperature between about 1600°
C. and about 2400°
C., such that a plurality of individual graphene layers are separated from the graphite intercalation compound; and
passing the plurality of individual graphene layers directly into a liquid,wherein the temperature between 1600°
C. and 2400°
C. is provided by a gas plasma.
1 Assignment
0 Petitions
Accused Products
Abstract
A process for the production of nano-structures is presented, involving providing a graphite flake comprising graphene layers; intercalating the graphite flake to form a graphite intercalation compound exhibiting Stage I, II or III intercalation; and exfoliating the graphite intercalation compound by exposing it to a temperature between about 1600° C. and about 2400° C. such that a plurality of individual graphene layers are separated from the graphite intercalation compound.
-
Citations
27 Claims
-
1. A process for production of nano-structures, comprising:
-
providing a graphite flake comprising graphene layers; intercalating the graphite flake to form a graphite intercalation compound exhibiting Stage I, II or III intercalation; exfoliating the graphite intercalation compound by exposing it to a temperature between about 1600°
C. and about 2400°
C., such that a plurality of individual graphene layers are separated from the graphite intercalation compound; andpassing the plurality of individual graphene layers directly into a liquid, wherein the temperature between 1600°
C. and 2400°
C. is provided by a gas plasma. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A process for production of nano-structures, comprising:
-
providing microcrystalline graphite having a purity of at least 90% comprising a graphite flake comprising graphene layers, which comprise a plurality of defect sites within the plane of the graphene structure; intercalating the graphite flake to form a graphite intercalation compound exhibiting Stage I, II or III intercalation; at least partially removing chemicals used for intercalation from the surface of the graphite intercalation compound in a drying process; and exfoliating the graphite intercalation compound in a reducing gas environment by exposing it to a temperature between about 1600°
C. and about 2400°
C. such that a plurality of individual graphene layers have one or more active sites onto which reducing gas is adsorbed and are separated from the graphite intercalation compound. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
-
-
24. A process for production of nano-structures, comprising:
-
providing a graphite flake comprising graphene layers; intercalating the graphite flake to form a graphite intercalation compound exhibiting Stage I, II or III intercalation; feeding the graphite intercalation compound through a reaction zone; exfoliating the graphite intercalation compound by exposing it to a temperature between about 1600°
C. and about 2400°
C., such that a plurality of individual graphene layers are separated from the graphite intercalation compound;keeping the graphene layers in an inert or protective environment; and passing the plurality of individual graphene layers directly into a liquid. - View Dependent Claims (25)
-
-
26. A process for production of nano-structures, comprising:
-
providing microcrystalline graphite having a purity of at least about 90% comprising a graphite flake comprising graphene layers; intercalating the graphite flake to form a graphite intercalation compound exhibiting Stage I, II or III intercalation; exfoliating the graphite intercalation compound in an inert gas or a reducing gas environment by exposing it to a temperature between about 1600°
C. and about 2400°
C., such that a plurality of individual graphite layers are separated from the graphite intercalation compound;drawing a vacuum on the exfoliating graphite; directing the exfoliated graphite by means of the drawn vacuum; and passing the plurality of individual graphene layers directly into a liquid. - View Dependent Claims (27)
-
Specification