Universal preparation method of reduced graphene oxide-based asymmetric composite membrane

A graphene-based composite membrane technology, applied in chemical instruments and methods, membrane technology, semipermeable membrane separation, etc. The potential application range of the membrane and other issues can be avoided to avoid aggregation, facilitate the preparation of membranes, and reduce production costs.
CN112439322AInactive Publication Date: 2021-03-05庄鹏宇
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
庄鹏宇
Publication Date
2021-03-05
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a universal preparation method of a reduced graphene oxide-based asymmetric composite membrane. The method comprises the following steps: firstly, preparing a graphene oxide-based mixed solution with a certain concentration, and then preparing a layer of graphene oxide-based composite membrane through certain modes such as vacuum filtration, spin coating, drop coating, blade coating, coating and electrospinning; then, preparing another layer of membrane containing different material components on the surface of the graphene oxide-based composite membrane by another solution or mixed solution in a certain manner so as to obtain a graphene oxide-based asymmetric composite membrane; and finally, putting the graphene oxide-based asymmetric membrane into a closed reaction container, and carrying out hydrothermal or solvothermal reaction at a certain temperature to prepare the reduced graphene oxide-based asymmetric composite membrane.
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Description

technical field

[0001] The invention relates to a general preparation method of a reduced graphene oxide-based asymmetric composite membrane.

[0002] technical background

[0003] Graphene-based composite materials have broad application prospects in energy, environment, chemical and other fields. For example, graphene-based composite membranes have important research value and application value in material separation, catalysis, lithium-ion batteries, supercapacitors, sensors, etc. However, the poor solubility of graphene greatly limits the research and application of graphene-based composite materials. Therefore, people first synthesize graphene oxide with good water solubility, compound it with other materials to prepare graphene oxide-based composite materials, and then repair the graphene structure through chemical reduction or high-temperature thermal reduction to synthesize graphene-based composite materials, such as gas Gels, fibers and membranes. However, graphen...

Claims

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