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Preparation method for poly diallyldimethylammonium chloride functionalized graphene

A polydiallyl dimethyl ammonium chloride, graphene solution technology, applied in chemical instruments and methods, inorganic chemistry, carbon compounds and other directions, can solve the problem of reduced conductivity and other properties, complicated experimental steps, covalent The key functionalization operation is cumbersome and other problems, to achieve good solubility and dispersibility, and improve the effect of dispersibility

Inactive Publication Date: 2017-05-31
QINGDAO ZHIXIN BIOLOGICAL TECH CO LTD
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  • Description
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Problems solved by technology

[0003] The covalent bond functionalization of graphene is relatively cumbersome and the experimental steps are complicated. Moreover, the introduction of oxygen-containing functional groups destroys the large π-conjugated structure of graphene, which significantly reduces its conductivity and other properties.

Method used

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Examples

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Embodiment 1

[0010] A preparation method of polydiallyldimethylammonium chloride functionalized graphene, the steps are as follows: take 80 mL of 1mg·mL-1 graphite oxide solution, ultrasonic 2h, make it peel off to form graphene oxide solution; Add 2 mL of 20% PDDA solution into 100 mL of deionized water, mix well, then add the graphene oxide solution into the PDDA solution under magnetic stirring, continue stirring for 30 min, add 3 mL of 80% hydrazine hydrate, stir well and place in React in a hydrothermal kettle at 90°C for 3h, after cooling, centrifuge and wash with deionized water, and vacuum dry at 80°C to obtain PDDA functionalized graphene.

Embodiment 2

[0012] A preparation method of polydiallyldimethylammonium chloride functionalized graphene, the steps are as follows: take 100 mL of 1mg·mL graphite oxide solution, ultrasonic 3h, make it peel off to form graphene oxide solution; Add 3 mL of 20% PDDA solution into 100 mL of deionized water, mix well, then add the graphene oxide solution into the PDDA solution under magnetic stirring, continue stirring for 50 min, add 4 mL of 80% hydrazine hydrate, stir well and place in React in a hydrothermal kettle at 100°C for 2 hours, after cooling, centrifuge and wash with deionized water, and vacuum dry at 60°C to obtain PDDA-functionalized graphene.

Embodiment 3

[0014] A preparation method of polydiallyldimethylammonium chloride functionalized graphene, the steps are as follows: take 90 mL of 1mg·mL-1 graphite oxide solution, ultrasonic 2.5h, make it peel off to form graphene oxide solution; Add 2.5 mL 20% PDDA solution to 100 mL deionized water, mix well, then add the graphene oxide solution into the PDDA solution under magnetic stirring, continue stirring for 20 min, add 3.5 mL 80% hydrazine hydrate, stir well Place in a hydrothermal kettle and react at 80°C for 4 hours, after cooling, centrifuge and wash with deionized water, and vacuum dry at 70°C to obtain PDDA-functionalized graphene.

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Abstract

The invention relates to a preparation method for poly diallyldimethylammonium chloride functionalized graphene. The preparation method for poly diallyldimethylammonium chloride functionalized graphene comprises the steps of taking 80-100 mL of a graphite oxide solution of 1 mg* ml<-1>; ultrasonically treating the graphite oxide solution for 2-3 h, so that the graphite oxide solution is peeled off to form a graphene oxide solution; adding 2-3 mL of a 20% PDDA solution to 100 mL of deionized water; uniformly mixing the PDDA solution with the deionized water; adding the graphene oxide solution to the PDDA solution under magnetic stirring; continuing to stir the mixed solution for 20-50 min; adding 3-4 mL of 80% hydrazine hydrate; after uniformly stirring the mixed solution, placing the stirred solution in a hydrothermal reactor to react for 2-4 h at 80-120 DEG C; after cooling, centrifuging and washing with the deionized water; and drying at 60-80 DEG C in a vacuum manner to obtain the PDDA functionalized graphene. PDDA functionalized graphene has the advantages that the dispersibility of PDDA functionalized graphene in the water is improved, graphene is also endowed with the positive electrical property, PDDA functionalized graphene provides a very good matrix for the preparation of a graphene-based composite material, and the application of graphene in electroanalytical chemistry is expanded.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a preparation method of polydiallyldimethylammonium chloride functionalized graphene. Background technique [0002] Carbon materials have important applications in analytical chemistry due to their unique structures and properties. Among them, carbon nanotubes and graphene are the most deeply researched and popular among carbon materials. As a nanomaterial with excellent performance, carbon nanotubes have been widely studied and applied in the field of chemistry. However, the only disadvantage of carbon nanotubes is that the production cost is too high, which hinders the large-scale production of composite materials based on them. Graphene is an ideal material to supplement or replace carbon nanotubes. Graphene is the thinnest two-dimensional nanomaterial found so far. It is a quasi-two-dimensional space structure formed by carbon atoms in the form of sp2...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/192
Inventor 孙国志
Owner QINGDAO ZHIXIN BIOLOGICAL TECH CO LTD
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