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A kind of preparation method of ionic liquid modified graphene composite polyaniline hollow microspheres

A graphene composite, ionic liquid technology, applied in the field of graphene composite materials, can solve problems such as unsatisfactory electrical conductivity, inability to stabilize Pickering emulsion well, etc., and achieves adjustable droplet size, good ionic conductivity, and design Good effect of uniformity and uniformity

Active Publication Date: 2022-02-01
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, GO has structural defects due to a large number of oxygen-containing groups, and its electrical conductivity is very unsatisfactory, and rGO is too hydrophobic to stabilize Pickering emulsions well.

Method used

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  • A kind of preparation method of ionic liquid modified graphene composite polyaniline hollow microspheres
  • A kind of preparation method of ionic liquid modified graphene composite polyaniline hollow microspheres
  • A kind of preparation method of ionic liquid modified graphene composite polyaniline hollow microspheres

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Experimental program
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Effect test

Embodiment 1

[0031] An ionic liquid modified graphene composite polyaniline hollow microspheres, the preparation method comprising the steps of:

[0032] (1) Preparation of ionic liquid modified reductant oxide oxide

[0033] 90 mg of oxide oxide oxide was dispersed in 300 ml of water to form 0.3 mg / ml of oxide water dispersion, and then 540 mg ionic liquid 1-amine-3-methylimidazole and 225 / 135 / 180 mg catalyst NaOH, The modified reaction was carried out at 85 ° C for 20 h to give the ionic liquid modified grease; after the addition of 90 mg of reducing agent borohydride was added, the reaction was reacted at 95 ° C for 6 h, which was filtered, and the ionic liquid modified reductant oxide, RGO-IL;

[0034] (2) Preparation of water-filled Pickering lotion

[0035] RGO-IL obtained by step (1) was dispersed in water, forming 1 mg / ml of RgO-IL aqueous dispersion, as aqueous phase, as an oil phase containing 2 vol% aniline monomer, and both according to oil ratio 1 : 1 mix, use homogeneous ma...

Embodiment 2

[0039] An ionic liquid modified graphene composite polyaniline hollow microspheres, the preparation method comprising the steps of:

[0040] (1) Preparation of ionic liquid modified reductant oxide oxide

[0041]The 90mg 225mL graphene oxide dispersed in water to form a 0.4mg / graphene oxide mL of an aqueous dispersion, was added 90mg amine ionic liquid 1-ethyl-3-methylimidazolium bromide and 135mg of triethylamine catalyst, at 75 28H ℃ modification reaction carried out, to give the ionic liquid modified graphene oxide; 120mg reducing agent after addition of sodium bisulfite, the reaction 10H, suction filtered, washed with ion-obtained liquid modified reduced graphene oxide at 85 ℃, i.e. rGO-IL;

[0042] (2) Preparation of oil-in-water Pickering emulsion

[0043] The step (1) rGO-IL resulting dispersed in water to form an aqueous dispersion rGO-IL 5mg / mL, the water phase, containing 10vol% ethyl aniline monomer as an oil phase, according to both the oil and water ratio of 1: 5 ...

Embodiment 3

[0047] A method of preparing ionic liquid polyaniline-modified graphene composite hollow microspheres, said process comprising the steps of:

[0048] (1) Preparation of ionic liquid modified reduced graphene oxide

[0049] The 90mg 180mL graphene oxide dispersed in water to form an aqueous dispersion of graphene oxide 0.5mg / mL, and the ionic liquid was added 360mg of 1- (3-aminopropyl) -3-methylimidazolium bromide and 180mg catalyst KOH, carried out at 80 ℃ 24h modification reaction, ionic liquid modified graphene oxide; 180mg after addition of a reducing agent of hydrazine hydrate, the reaction 8h at 90 ℃, by suction filtration, washed with ionic liquid reduced graphene oxide-modified, i.e., rGO-IL;

[0050] (2) Preparation of oil-in-water Pickering emulsion

[0051] The step (1) is prepared rGO-IL dispersed in water to form an aqueous dispersion rGO-IL 3mg / mL, the water phase, containing toluene 8vol% aniline monomer as an oil phase, according to both the ratio of water 1 : ...

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Abstract

The invention discloses a preparation method of ionic liquid-modified graphene composite polyaniline hollow microspheres. The preparation method comprises the following steps: (1) preparing reduced graphene oxide modified by ionic liquid; (2) preparing oil-in-water type Pickering emulsion; (3) preparation of hollow microspheres; the present invention utilizes the Pickering emulsion soft template method, uses reduced graphene oxide modified by ionic liquid as particle emulsifier, and prepares by initiating the polymerization of aniline in the oil phase, and subsequently removing the oil phase The graphene / polyaniline composite hollow microspheres modified by ionic liquid were obtained. This method has a simple process and a mild process.

Description

Technical field [0001] The present invention relates to the technical field of graphene composites, and more particularly to a method for preparing an ionic liquid modified graphene composite polyaniline hollow microsphere. Background technique [0002] As a two-dimensional network structure composed of single-layer carbon atoms, graphene has a unique physical chemical properties such as large surface area, stable mechanical properties, excellent electrochemical performance, in many fields such as supercapacitors, sensing, catalysis, electromagnetic shielding. It causes extensive attention from researchers. However, due to the inter-layer π-π action, the graphene sheet is extremely easy to stacked, which makes it greatly reduced than the surface area, and to a large extent affect the actual performance of the graphene material in the application. The composite material can produce synergistic effects, which can distinguish the shortcomings of a single material to a certain extent...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L79/02C08K9/04C08K3/04
CPCC08K9/04C08K3/042C08L79/02
Inventor 罗静王艺晨
Owner JIANGNAN UNIV
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