METHODS FOR PRODUCING GRAPHENE WITH TUNABLE PROPERTIES BY A MULTI-STEP THERMAL REDUCTION PROCESS

A process for the preparation of graphene includes the steps of a) providing flash thermal treatment of a graphite oxide at a temperature up to 700° C. sufficient to produce exfoliation and under inert atmosphere and b) cooling the material obtained in the previous step below 90° C. The method furth...

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Hauptverfasser:	ÁLVAREZ RODRÍGUEZ Patricia, GRANDA Marcos, CALLE GÓMEZ Fernando, GARCÍA SAN LUIS Jesús, BLANCO Patricia, FERNÁNDEZ Laura, BLANCO RODRÍGUEZ Clara, PÁEZ DUEÑAS Antonio, MENÉNDEZ LÓPEZ Rosa María, SANTAMARÍA RAMÍREZ Ricardo
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOUNDS THEREOF GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS INORGANIC CHEMISTRY MANUFACTURE OR TREATMENT OF NANOSTRUCTURES MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES METALLURGY NANOTECHNOLOGY NON-METALLIC ELEMENTS PERFORMING OPERATIONS SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ARTCOLLECTIONS [XRACs] AND DIGESTS TRANSPORTING
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Zusammenfassung:	A process for the preparation of graphene includes the steps of a) providing flash thermal treatment of a graphite oxide at a temperature up to 700° C. sufficient to produce exfoliation and under inert atmosphere and b) cooling the material obtained in the previous step below 90° C. The method further includes the step of c) heating the material resulting from the previous step under inert atmosphere at a temperature which is higher than the temperature of step a), wherein the heating rate is between 1 and 15° C./min. The graphenes obtained from the process exhibit excellent physico-chemical properties.