Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of preparation method and application of aminated graphene

A kind of graphene amination technology, applied in the direction of graphene, single-layer graphene, chemical instruments and methods, etc., can solve the problem that the product cannot ensure the single-atom sheet structure, the process is complicated, the operation requirements and environmental conditions are high, etc. problems, to achieve the effect of increased nitrogen content, improved adsorption capacity, and high safety

Inactive Publication Date: 2018-04-13
TIANJIN NORMAL UNIVERSITY
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, most of the existing methods for the preparation of aminated graphene are complicated, and have high requirements for the operation and environmental conditions in the preparation process, and the obtained products cannot be guaranteed to have a monoatomic sheet structure.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of preparation method and application of aminated graphene
  • A kind of preparation method and application of aminated graphene
  • A kind of preparation method and application of aminated graphene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (1) Dissolve 0.1 g of graphene oxide powder in 1.6 mL of dimethylformamide, stir evenly to form a stable suspension;

[0041] (2) Mix 11 mL of tetrahydrofuran with 1.6 mL of N,N’-dicyclohexylcarbodiimide, and stir well;

[0042] (3) In the suspension prepared in step 1), add 2.2 mL of ethylenediamine and the tetrahydrofuran solution of N,N'-dicyclohexylcarbodiimide prepared in step 2), stir for 3 days, and filter with suction to obtain Aminated graphene;

[0043] (4) Wash the aminated graphene obtained in step (3) with methanol and distilled water several times to remove residual organic matter during the operation;

[0044] (5) Add an appropriate amount of ultrapure water to the aminated graphene obtained in step (4), and ultrasonicate the water bath for 20 min;

[0045] (6) Lyophilize the aminated graphene obtained in step (5) to obtain aminated graphene with a monoatomic sheet structure.

Embodiment 2

[0047] (1) Dissolve 0.1 g of graphene oxide powder in 5.2 mL of dimethylformamide, stir evenly to form a stable suspension;

[0048] (2) Mix 15.7 mL of tetrahydrofuran with 1.6 mL of N,N’-dicyclohexylcarbodiimide, and stir well;

[0049] (3) In the suspension prepared in step 1), add 2.2 mL of ethylenediamine and the tetrahydrofuran solution of N,N'-dicyclohexylcarbodiimide prepared in step 2), stir for 3 days, and filter with suction to obtain Aminated graphene;

[0050] (4) Wash the aminated graphene obtained in step (3) with methanol and distilled water several times to remove residual organic matter during the operation;

[0051] (5) Add an appropriate amount of ultrapure water to the aminated graphene obtained in step (4), and ultrasonicate the water bath for 20 min;

[0052] (6) Lyophilize the aminated graphene obtained in step (5) to obtain aminated graphene with a monoatomic sheet structure.

Embodiment 3

[0054] (1) Dissolve 0.1 g of graphene oxide powder in 10 mL of dimethylformamide, stir evenly to form a stable suspension;

[0055] (2) Mix 18 mL of tetrahydrofuran with 1.5 mL of N,N’-dicyclohexylcarbodiimide, and stir evenly;

[0056] (3) In the suspension prepared in step 1), add 2.2 mL of ethylenediamine and the tetrahydrofuran solution of N,N'-dicyclohexylcarbodiimide prepared in step 2), stir for 3 days, and filter with suction to obtain Aminated graphene;

[0057] (4) Wash the aminated graphene obtained in step (3) with methanol and distilled water several times to remove residual organic matter during the operation;

[0058] (5) Add an appropriate amount of ultrapure water to the aminated graphene obtained in step (4), and ultrasonicate the water bath for 20 min;

[0059] (6) Lyophilize the aminated graphene obtained in step (5) to obtain aminated graphene with a monoatomic sheet structure.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a preparation method of aminated graphene, particularly a preparation method and application of aminated graphene, belonging to the field of environmental functional materials. The preparation method comprises the following steps: dissolving graphene oxide powder in a dimethylformamide solution, respectively adding ethylenediamine and an N,N'-dicyclohexylcarbodiimide tetrahydrofuran solution, and reacting to obtain the monoatomic-lamellar-structure aminated graphene. The preparation method is simple, and has the advantages of mild preparation reaction and high safety. The obtained aminated graphene is a monoatomic lamellar structure, has the advantages of high amination degree and higher nitrogen content than the products of other preparation methods, is beneficial to adsorbing heavy metal ions in wastewater, and has favorable application prospects in the aspect of heavy metal wastewater treatment.

Description

[0001] This application is funded by the "Innovative Team Training Program" (TD12-5037) of Tianjin Colleges and Universities and the Doctoral Fund of Tianjin Normal University (52XB1403). Technical field [0002] The invention belongs to the field of environmental functional materials, and specifically relates to a preparation method of aminated graphene and its application in the treatment of heavy metal sewage. Background technique [0003] Since its discovery in 2004, graphene has received widespread attention due to its outstanding electrical and mechanical properties. Because graphene has a unique monoatomic sheet structure and a huge specific surface area, it has a strong adsorption capacity for pollutants in the water environment. However, graphene is prone to agglomeration in an aqueous solution, which is not conducive to the adsorption of pollutants on its surface. Functionalized graphene (such as graphene oxide, aminated graphene, etc.) has functional groups such as carb...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/184C02F1/28C02F1/62
CPCC01B2204/02C01P2002/82C01P2002/85C01P2004/04C02F1/281
Inventor 王方卢妙杰王中良
Owner TIANJIN NORMAL UNIVERSITY