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Two-step method for preparing graphene oxide material loaded with quaternary ammonium salt groups and its application

A quaternary ammonium salt group, graphene technology, applied in chemical instruments and methods, botanical equipment and methods, applications, etc., can solve the problems of low adsorption performance and hydrophilic performance, destroying graphene nanostructures, etc. High hydrophilicity, stable physical and chemical properties, good hydrophilicity

Active Publication Date: 2022-05-17
HARBIN ENG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the existing method for preparing graphene oxide with quaternary ammonium groups will destroy the nanostructure of graphene, and the adsorption performance and hydrophilicity are low, and provide a two-step method for preparing quaternary ammonium Method and application of ammonium salt group graphene oxide material

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  • Two-step method for preparing graphene oxide material loaded with quaternary ammonium salt groups and its application
  • Two-step method for preparing graphene oxide material loaded with quaternary ammonium salt groups and its application
  • Two-step method for preparing graphene oxide material loaded with quaternary ammonium salt groups and its application

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specific Embodiment approach 1

[0026] Specific embodiment one: the method for preparing graphene oxide material loaded with quaternary ammonium salt group by two-step method in this embodiment is implemented according to the following steps:

[0027] 1. Grafting tertiary amine groups on the surface of graphene oxide: Dissolving graphene oxide in a solvent and ultrasonically dispersing to obtain a homogeneous and stable graphene oxide suspension, then adding a tertiary amination modifier for tertiary amination modification Reaction, collecting solid-phase reactants, centrifuging and drying, to obtain graphene oxide loaded with tertiary amine groups;

[0028] 2. Quaternization of tertiary amine groups: Dissolve the graphene oxide loaded with tertiary amine groups obtained in step 1 in a solvent to obtain a suspension of graphene oxide loaded with tertiary amine groups, and then add quaternized ammonium The quaternary ammonium modification reaction is carried out, the reactants are collected, and after centrif...

specific Embodiment approach 2

[0032] Specific embodiment two: the difference between this embodiment and specific embodiment one is that the solvent described in step one and step two is dimethyl sulfoxide, acetone, cyclohexane, chloroform, NN dimethylformamide, NN two Methylacetamide, N-methylpyrrolidone, water, methanol, absolute ethanol, petroleum ether or tetrahydrofuran.

[0033] In this embodiment, the cleaning solution used in centrifugal cleaning is also dimethyl sulfoxide, acetone, cyclohexane, chloroform, NN dimethylformamide, NN dimethylacetamide, N-methylpyrrolidone, water, methanol , ethanol, petroleum ether or tetrahydrofuran.

specific Embodiment approach 3

[0034] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the molar ratio of graphene oxide to tertiary amination modifier in step 1 is 1:1-1:10.

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Abstract

A two-step method for preparing graphene oxide materials loaded with quaternary ammonium salt groups and its application. The invention belongs to the technical field of carbon nanomaterials. The nanostructure, adsorption performance and hydrophilic performance are low. Preparation method: 1. Add a tertiary amination modifier to the graphene oxide suspension to graft tertiary amine groups on the surface of graphene oxide; 2. Quaternize the tertiary amine groups of graphene oxide to obtain modified graphene oxide material. The present invention introduces quaternary ammonium groups on the surface of graphene oxide nanomaterials through a two-step method, so that it not only retains the original nanostructure of graphene oxide, but also has the characteristics of good dispersion, large specific surface area, good physical and chemical stability, and high affinity Water-resistant and strong antibacterial properties, it can be used in various fields as adsorbents, bactericides and hydrophilic modifiers.

Description

technical field [0001] The invention belongs to the technical field of carbon nanomaterials, and in particular relates to a preparation method and application of modified graphene oxide. Background technique [0002] Currently, the functionalization of graphene oxide has aroused great interest among researchers due to its extremely high specific surface area, low cytotoxicity, good physicochemical stability, unique nanostructure, sufficient oxygen loading, and surface chemical properties. , graphene oxide and its composites have a wide range of potential applications in the fields of transparent conductors, polymer reinforcement, bioengineering, and biomaterials. Graphene oxide is a well-known monolayer of carbon atoms forming a dense honeycomb structure containing hydroxyl and epoxy functional groups on two accessible sides and carboxylic acid groups at the edges. The functionalization method developed for graphene oxide is through its oxygen-containing functional groups (...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20B01J20/28B01D71/34B01D69/02C02F1/28C02F1/50A01N33/12A01P1/00C02F101/10C02F101/30
CPCB01J20/20B01J20/28011B01D71/34B01D71/021B01D69/02C02F1/283C02F1/50A01N33/12B01D2325/36C02F2101/105C02F2101/308C02F2303/04
Inventor 赵方波刘昊松王丽红周越耿成宝牛宏岩蒋金婷王玉轲
Owner HARBIN ENG UNIV
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