ECO-FRIENDLY PRODUCTION OF HIGHLY-CONDUCTIVE AND CLEAN GRAPHENE DISPERSIONS

摘要

Disclosed is a novel eco-friendly, rapid approach to directly produce highly-conductive and "clean" graphene sheets without involving any toxic regents or metal-containing compounds, and without generating toxic byproducts, thus enabling a broad spectrum of applications by solution processing techniques of low cost. In one embodiment, the approach relies on the synergy of piranha solution, intercalated molecular oxygen, and microwave heating that enables controlled oxidation of graphite particles, leading to rapid and direct generation of highly-conductive, clean graphene sheets without releasing any toxic gases and/or any potentially toxic aromatic byproducts.