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    METHOD FOR THE MANUFACTURE OF REDUCED GRAPHENE OXIDE FROM EXPANDED KISH GRAPHITE
    2.
    发明申请
    METHOD FOR THE MANUFACTURE OF REDUCED GRAPHENE OXIDE FROM EXPANDED KISH GRAPHITE 有权

    公开(公告)号：US20220234898A1

    公开(公告)日：2022-07-28

    申请号：US17611277

    申请日：2020-05-12

    Applicant: ArcelorMittal

    Inventor： Thi Tan VU ,  David NORIEGA PEREZ ,  Roberto SUAREZ SANCHEZ

    IPC: C01B32/23

    Abstract: A method for the manufacture of reduced graphene oxide from kish graphite including: A. The provision of kish graphite, B. Optionally, a pre-treatment of kish graphite, C. The intercalation of kish graphite with a persulfate salt and an acid at room temperature to obtain intercalated kish graphite, D. The expansion of the intercalated kish graphite to obtain expanded kish graphite and E. An oxidation step of the expanded kish graphite to obtain graphene oxide and F. A reduction of graphene oxide into reduced graphene oxide.

    Method for the manufacture of a self-standing graphene oxide or reduced graphene oxide film
    6.
    发明公开
    Method for the manufacture of a self-standing graphene oxide or reduced graphene oxide film 审中-公开

    公开(公告)号：US20240018004A1

    公开(公告)日：2024-01-18

    申请号：US18036972

    申请日：2020-11-18

    Applicant: ArcelorMittal

    Inventor： Laura MEGIDO FERNANDEZ ,  Cristina BOTAS VELASCO ,  Thi Tan VU ,  Roberto SUAREZ SANCHEZ

    IPC: C01B32/198 ,  C01B32/194

    CPC classification number: C01B32/198 ,  C01B32/194

    Abstract: A method for the manufacture of a self-standing graphene oxide or reduced graphene oxide film having a thickness between 0.4 and 4.0 μm, including the successive steps of A) preparing an aqueous dispersion including 0.1 to 30 g·L−1 of graphene oxide or reduced graphene oxide, B) depositing the aqueous dispersion on a flat substrate coated with a polymeric film dissolvable in organic solvents and unsolvable in water, so as to form a wet film having a thickness comprised between 1 μm and 3.5 mm, C) drying the wet film, D) separating the polymeric film from the flat substrate, E) placing the polymeric film in a support frame, F) showering the polymeric film with an organic solvent to dissolve the polymeric film, G) separating the graphene oxide or reduced graphene oxide film from the frame to obtain the self-standing graphene oxide or reduced graphene oxide film.

    A METHOD FOR THE MANUFACTURE OF GRAPHENE OXIDE FROM EXPANDED KISH GRAPHITE
    7.
    发明申请
    A METHOD FOR THE MANUFACTURE OF GRAPHENE OXIDE FROM EXPANDED KISH GRAPHITE 有权

    公开(公告)号：US20220212934A1

    公开(公告)日：2022-07-07

    申请号：US17611249

    申请日：2020-05-12

    Applicant: ArcelorMittal

    Inventor： Thi Tan VU ,  Roberto SUAREZ SANCHEZ

    IPC: C01B32/198 ,  B01D21/26

    Abstract: A method is provided for the manufacture of graphene oxide from kish graphite including: A. The provision of kish graphite, B. Optionally, a pre-treatment of kish graphite, C. The intercalation of kish graphite with a persulfate salt and an acid at room temperature to obtain intercalated kish graphite, D. The expansion of the intercalated kish graphite to obtain expanded kish graphite and E. An oxidation step of the expanded kish graphite to obtain graphene oxide.

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