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Preparation method for fatty amine modified graphene

A technology of aliphatic amines and graphene, applied in graphene, chemical instruments and methods, inorganic chemistry, etc., can solve the problems of difficult modification methods and unsatisfactory performance of graphene, and achieve the effect of easy separation

Active Publication Date: 2019-01-18
XINXIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] With the continuous development of science and technology in our country, higher requirements are constantly put forward for absorbing materials. Graphene also has a good application prospect in the field of absorbing waves. Among them, amine-based graphene has better adsorption properties for positively charged substances, such as There are relevant literature reports that aliphatic amines are fixed on graphene sheets to improve adsorption, separation and recovery. At present, there are doping modification methods and chemical reaction modification methods, but the performance of modified graphene is not enough. Ideally, the method of modifying graphene with aliphatic amines is rarely reported, especially the modification method of safely connecting aliphatic amines to graphene sheets is difficult to achieve

Method used

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  • Preparation method for fatty amine modified graphene
  • Preparation method for fatty amine modified graphene

Examples

Experimental program
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Effect test

Embodiment 1

[0032] (1) Weigh 0.33moL (19.8g) of ethylenediamine and dissolve it in 7 times the volume of acetonitrile, and the obtained ethylenediamine solution is pre-cooled at -60°C for later use;

[0033] (2) Weigh 0.33 moL (39.4 g) of isoamyl nitrite and dissolve it in 7 times the volume of acetonitrile to obtain a solution of isoamyl nitrite, which is pre-cooled at -60°C for later use;

[0034] (3) regulate the aliphatic amine solution of step (1) and the isoamyl nitrite solution of step (2) with acetonitrile, make both equal in volume;

[0035] (4) Weigh 4 g of graphene and ultrasonically disperse it in 50 mL of acetonitrile, add 0.033 mol (1.52 g) of formic acid, and control the temperature at -60 ° C to obtain a graphene suspension, which is set aside;

[0036] (5) Under the protection of nitrogen, the two solutions obtained in steps (1) and (2) are dropped into the graphene suspension obtained in step (4) at the same speed at the same time, and the temperature control reaction is...

Embodiment 2

[0038] (1) Weigh 0.60 mol (44.4 g) of 1,3-propylenediamine and dissolve it in 9 times the volume of tetrahydrofuran to obtain a 1,3-propylenediamine solution, which is pre-cooled at -70°C for later use;

[0039] (2) Weigh 0.6moL (68.7g) of tert-butyl nitrite and dissolve it in 9 times the volume of tetrahydrofuran to obtain a tert-butyl nitrite solution, which is pre-cooled at -70°C for later use;

[0040] (3) regulate the 1,3-propylenediamine solution of step (1) and the tert-butyl nitrite solution of step (2) with tetrahydrofuran, make both equal in volume;

[0041] (4) Weigh 2 g of graphene and ultrasonically disperse it in 20 mL of tetrahydrofuran, add 0.60 mol (3.6 g) of acetic acid, and control the temperature at -70° C. to obtain a graphene suspension for later use;

[0042] (5) Under the protection of nitrogen, the two solutions obtained in steps (1) and (2) are dropped into the graphene suspension obtained in step (4) at the same speed at the same time, and the temper...

Embodiment 3

[0044] (1) Weigh 1.25mol (110g) of 1,4-butanediamine and dissolve it in 12 times the volume of ether to obtain a 1,4-butanediamine solution, which is pre-cooled at -70°C for later use;

[0045] (2) Weigh 1.25 mol (149.4 g) of isoamyl nitrite and dissolve it in 12 times the volume of diethyl ether to obtain a solution of isoamyl nitrite, which is pre-cooled at -70°C for later use;

[0046] (3) the 1,4-butylene diamine solution of step (1) and the isoamyl nitrite solution of step (2) are regulated with ether, so that both volumes are equal;

[0047] (4) Weigh 3 g of graphene and ultrasonically disperse it in 30 mL of ether, add 0.125 mol (5.8 g) of formic acid, and control the temperature at -70 ° C to obtain a graphene suspension, which is set aside;

[0048] (5) Under the protection of nitrogen, the two solutions obtained in steps (1) and (2) are dropped into the graphene suspension obtained in step (4) at the same speed at the same time, and the temperature control reaction i...

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Abstract

The invention discloses a method for preparing amino modified graphene through fatty amine modified graphene, and belongs to the field of new materials. The method comprises the following steps that fatty amine and nitrous acid ester are firstly dissolved in a solvent separately, the temperature of a mixture of the graphene and the solvent is controlled, a small amount of acid is added into the graphene, the two reactants are added into the mixture, and reaction is carried out; and filtering and washing are carried out so as obtain the amino modified graphene. The method has the advantages ofbeing simple in technological process, mild in conditions, high in safety, low in cost, capable of improving the product stability and capable of providing the possibility for industrial production oflarge-scale preparation of the fatty amine modified graphene.

Description

technical field [0001] The invention relates to the technical field of manufacturing new material modified graphene, and more specifically relates to a preparation method of aliphatic amine modified graphene. Background technique [0002] Graphene is a new type of two-dimensional carbon material. Its theoretical specific surface area is large and it is a good adsorbent; graphene and graphene oxide have more functional groups, which is conducive to the adsorption of molecules. If some functional groups are introduced, such as amine The amine group will enhance the adsorption performance, and the amine group shows a good adsorption effect on cationic pollutants. Recently, the introduction of amine groups and polyamine groups on graphene sheets to improve its adsorption and selectivity has become a hot spot. [0003] With the continuous development of science and technology in our country, higher requirements are constantly put forward for absorbing materials. Graphene also ha...

Claims

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Application Information

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IPC IPC(8): C01B32/194C09K3/00
CPCC09K3/00C01B32/194C01B2204/20
Inventor 王储备周建伟仝庆马国扬王莹莹马新凤朵芳芳刘建枫黄建新
Owner XINXIANG UNIV
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