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Water-soluble quaternary ammonium salinized carbon nanosphere and preparation method and application thereof

A technology of quaternizing carbon and carbon nanospheres, which is applied in the field of nanometers, can solve the problems of complex preparation process, poor antibacterial effect, and high cost, and achieve the effect of simple preparation method, good antibacterial performance, and cheap raw materials

Active Publication Date: 2016-07-20
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved in the present invention is to provide a water-soluble quaternized ammonium saltized carbon nanosphere to solve the problems of complex preparation process, high cost and poor antibacterial effect in the prior art.

Method used

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  • Water-soluble quaternary ammonium salinized carbon nanosphere and preparation method and application thereof
  • Water-soluble quaternary ammonium salinized carbon nanosphere and preparation method and application thereof
  • Water-soluble quaternary ammonium salinized carbon nanosphere and preparation method and application thereof

Examples

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Effect test

Embodiment 1

[0036] Preparation of water-soluble quaternized carbon nanospheres (see figure 1 ), including the following steps:

[0037] (1) chitosan is dissolved in hydrochloric acid aqueous solution;

[0038] (2) Add cetyl betaine to the chitosan solution, heat, dissolve and stir to mix;

[0039] (3) reacting the mixed system obtained in step (2) at 180° C. for 20 hours to form a carbon nanosphere solution;

[0040] (4) Purify the above carbon nanosphere solution by dialysis.

[0041] in,

[0042] The mass ratio of described cetyl betaine and chitosan is 1:10;

[0043] The dialysate is deionized water, and the molecular weight of the dialyzed membrane is 1000;

[0044] The obtained carbon nanosphere particle diameter is about 100nm (see figure 2 ).

Embodiment 2

[0046] The preparation method is the same as that of Example 1, except that in step (3), the reaction time is 24 hours, and the reaction temperature is 160°C.

Embodiment 3

[0048] The preparation method is the same as that of Example 1, except that in step (3), the reaction time is 12 hours, and the reaction temperature is 200°C.

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Abstract

The invention discloses a water-soluble quaternary ammonium salinized carbon nanosphere. The water-soluble quaternary ammonium salinized carbon nanosphere is prepared via reaction between a high-molecular compound with an amino group and alkyl betaine, and comprises a carbon nanosphere mainly formed by carbon and the alkyl betaine grafted on the surface of the carbon nanosphere. The invention further discloses a preparation method of the water-soluble quaternary ammonium salinized carbon nanosphere and an application of the antibacterial aspect. Compared with the prior art, the invention completes the chemical grafting of the high-molecular compound with the amino group and the alkyl betaine and carbon nanometer granulation through a hydrothermal method by one step, and the prepared carbon nanosphere is good in water solubility, relatively low in cytotoxicity and excellent in broad-spectrum antibacterial performance.

Description

technical field [0001] The invention belongs to the field of nanotechnology, and in particular relates to a water-soluble quaternized ammonium saltized carbon nanosphere and a preparation method and application thereof. Background technique [0002] Carbon is one of the most important elements in nature and one of the most closely related to human beings. In recent decades, various carbon nanomaterials with excellent properties (such as carbon nanotubes, carbon nanofibers, carbon nanospheres, carbon quantum dots, graphene and fullerene, etc.) have attracted widespread attention. Carbon materials have good biocompatibility, cheap raw materials, can be obtained in large quantities, and have various structures and properties. They have been widely used in the fields of material modification, energy, catalysis, environmental protection, electronic devices, drug loading, and biological imaging. [0003] The development of nanomaterials in antibacterial aspects is also gradually ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02A01N59/00A01N33/12A01P1/00B82Y40/00
CPCA01N33/12A01N59/00C01P2004/03C01P2004/32C01P2004/51C01P2004/64
Inventor 吴富根蒋耀文高歌
Owner SOUTHEAST UNIV
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