| 摘要 |
<p>Provided is a method for preparing a modified graphene material by microwave irradiation in a controlled atmosphere, which comprises the steps of: (1) placing graphite oxide into a vacuum cavity of a microwave chamber, and evacuating same; (2) introducing a gas containing nitrogen, boron or a fluorine element into the vacuum cavity; (3) irradiating by means of a microwave the graphite oxide until the graphite oxide explodes and dissociates; (4) stopping the microwave irradiation, pumping the gas out of the vacuum cavity, then introducing a protective gas, and collecting the modified graphene material. Also provided is a modified graphene material obtained by this method. The method is carried out in a vacuum cavity, which can effectively prohibit contact between oxygen and graphene, and avoid the combustion of graphene during high-temperature reduction, thus increasing the reduction yield. Features of the method include simple equipment, high yields, energy savings, and easy mass production.</p> |
