METHOD FOR RECYCLING RESIDUE FROM MXene PREPARATION AND USE OF RESIDUE IN BIOSENSOR

    公开(公告)号:US20250050543A1

    公开(公告)日:2025-02-13

    申请号:US18924729

    申请日:2024-10-23

    Abstract: The present disclosure discloses a method for recycling a residue from MXene preparation, including the following steps: recovering a bottom residual sediment produced in preparation of MXene through etching in a minimally intensive layer delamination (MILD) method, mixing the bottom residual sediment with a molten polyvinyl alcohol (PVA) solution, and drying to prepare a Ti3C2Tx-Ti3AlC2/PVA composite film. The present disclosure can effectively utilize a residue from an MXene process to prepare a composite film with both excellent mechanical properties and electrical conductivity. The composite film has extremely-high sensitivity for stress-strain and prominent stability, and is suitable for flexible connection and sensing of biosensors, robots, or the like. The present disclosure has significant economic and environmental benefits, and is suitable for promotion and application.

    RIGID NON-ISOCYANATE POLYURETHANE FOAM AND PREPARATION METHOD THEREFOR

    公开(公告)号:US20240182643A1

    公开(公告)日:2024-06-06

    申请号:US18241913

    申请日:2023-09-04

    CPC classification number: C08G71/04 C08J9/08 C08J9/141 C08G2101/00

    Abstract: A rigid non-isocyanate polyurethane foam and a preparation method therefor are provided. According to the present application, a rigid epoxide is firstly reacted with carbon dioxide to obtain rigid cyclic carbonate, then the product is reacted with diamine to obtain rigid non-isocyanate polyurethane, and the rigid non-isocyanate polyurethane is mixed with a foaming agent for foaming to obtain rigid non-isocyanate polyurethane foam. The present application improves the mechanical property of non-isocyanate polyurethane by optimizing the structures and groups of raw materials; according to the present application, mild reaction conditions such as atmospheric pressure and low temperature are used, and the amounts of reactants and foaming agents are adjusted, so that the reaction is significantly enhanced, and an excellent foaming effect is achieved.

    METHOD FOR MAKING YTTRIUM ALUMINUM GARNET (YAG) NANOPOWDERS

    公开(公告)号:US20230144242A1

    公开(公告)日:2023-05-11

    申请号:US17984707

    申请日:2022-11-10

    CPC classification number: C01F17/34 C01F17/10 C01P2004/64 C01P2002/30

    Abstract: A method for making yttrium aluminum garnet (YAG) nanopowders, includes mixing carbohydrate and organic amine in a container according to a first ratio, stirring the carbohydrate and organic amine in the container under a heating condition for 2 minutes to 120 minutes for melting the carbohydrate and the organic amine to obtain a clear and transparent mixed solution, adding yttrium salt and aluminum salt at a second ratio to the clear and transparent mixed solution, and stirring the yttrium salt, the aluminum salt, and the clear and transparent mixed solution in the container under the heating condition for 5 minutes to120 minutes to form a uniform molten mixture, heating the uniform molten mixture to dehydrate and carbonize the carbohydrate to obtain a dark brown fluffy solid, and performing a heat treatment on the dark brown fluffy solid at 800° C. to 1500° C. to obtain the YAG nanopowders.

    MICROWAVE-ASSISTED CARBON TEMPLATE METHOD FOR PREPARING SUPPORTED NANO METAL MATERIALS

    公开(公告)号:US20190176231A1

    公开(公告)日:2019-06-13

    申请号:US16279926

    申请日:2019-02-19

    Abstract: The present disclosure provides a microwave-assisted carbon template method for preparing supported nano metal-oxides or nano metals. The method includes mixing a carbohydrate, urea, and a precursor of an oxide support with a metal salt in a container, adding a certain amount of water, and completely dissolving the solid chemicals through ultrasonic stirring to form a homogeneous solution. The method also includes performing microwave treatment on the obtained solution for approximately 0.1 minute to 60 minutes with a microwave heating power in a range of approximately 100 W to 50 kW to dehydrate and carbonize the carbohydrate and thus form a dark brown solid. The method further includes performing heat treatment on the dark brown solid at a temperature in a range of approximately 200° C. to 1100° C. in an air atmosphere for approximately 0.5 hour to 24 hours to obtain a metal-oxide supported by a porous oxide support.

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