Scalable fabrication of pristine holey graphene nanoplatelets via dry microwave irradiation
AssigneeRutgers, The State University of New Jersey
InventorsHuixin He, Keerthi Savaram, Qingdong Li
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Abstract
Disclosed are the methods for fabricating holey graphene nanoplatelets using microwave irradiation to treat a dry graphite powder. In particular, the methods can be used to treat graphite intercalation compounds either with or without partial oxidation to obtain holey graphene nanoplatelets with predetermined hole size, hole edge shape, thickness and lateral dimension. The method does not involve any toxic reagents or metal-containing compounds, and without generating toxic byproducts, thus enabling a variety of eco-friendly applications.
Claims19
A method for fabricating holey graphene nanoplatelets, the method comprising:
- subjecting partially oxidized graphite intercalation compounds (PO-GICs), oxygen intercalated graphite intercalation compounds (OI-GICs), or commercial expandable graphite (CEG) to one or more microwave irradiation treatments to obtain holey graphene nanoplatelets,
- wherein the holey graphene nanoplatelets comprise one or more expanded graphene sheets having a plurality of holes on the basal planes thereof, and
- wherein the microwave irradiation treatments further comprise:
- a first microwave irradiation to remedy existing defects on the basal planes of the expanded graphene sheets;
- a second microwave irradiation to generate baby holes on the basal planes of the expanded graphene sheets;
- and a third microwave irradiation to obtain the plurality of holes by fine-tuning the generated baby holes, such that the expanded graphene sheets of the holey graphene nanoplatelets have a predetermined number of holes of predetermined size and geometry on the basal planes of the expanded graphene sheets.
Dependencies are inferred from the claim text.