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US 9,540,244 B2Granted
Methods for synthesizing graphene from a lignin source
AssigneesMississippi State University, The United States of America as represented by the Secretary of Agriculture
InventorsJilei Zhang, Zhiyong Cai
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Abstract
Embodiments of the presently-disclosed subject matter include methods for synthesizing carbon nanomaterials from a lignin and/or source thereof. Exemplary methods comprise a process of thermal treating a lignin and/or source thereof in the presence of a catalyst to synthesize graphene nanosheets.
Claims20
A method of synthesizing carbon nanomaterials, the method comprising:
- mixing a lignin and/or source thereof and a catalyst to form a mixture, wherein the lignin and/or source thereof is a kraft lignin;
- heating the mixture at a temperature of at least 600° C. for at least 30 minutes;
- cooling the heated mixture to form a cooled mixture including graphene nanomaterials;
- and
- following the cooling step, purifying the mixture to increase a concentration of carbon nanomaterials in the cooled mixture.
2 more elements
A method of synthesizing carbon nanomaterials, the method comprising:
- mixing a kraft lignin and iron nanoparticles to form a mixture;
- heating the mixture at a temperature of about 80° C. to about 1200° C. for about 40 minutes to about 80 minutes under an inert atmosphere;
- and
- cooling the heated mixture to a temperature of less than about 100° C. under an inert atmosphere to form a cooled mixture including graphene.
1 more element
A method of synthesizing carbon nanomaterials, the method comprising:
- mixing a kraft lignin feedstock and an iron-containing catalyst to form a mixture;
- heating the mixture at a temperature of about 80° C. to about 1200° C. for about 40 minutes to about 80 minutes under an inert atmosphere;
- and
- cooling the heated mixture to room temperature under an inert atmosphere to form a cooled mixture including graphene.
1 more element
Dependencies are inferred from the claim text.