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Green oxidized nano-diamond monodisperse colloid solution, and preparation, secondary dispersion method and antibacterial application thereof

A technology of nano-diamond and colloidal solution, applied in the direction of diamond, botanical equipment and methods, applications, etc., can solve problems such as hindering the development of nano-diamond and difficult performance, and achieve enhanced practicability, high yield, and simple technical process Effect

Active Publication Date: 2019-05-28
曹郁 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Hard agglomeration is the main form of nano-diamond agglomeration. Its existence seriously hinders the development of nano-diamond, making it difficult to exert its excellent performance. To promote the application of nano-diamond, the problem of hard agglomeration must be solved.

Method used

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  • Green oxidized nano-diamond monodisperse colloid solution, and preparation, secondary dispersion method and antibacterial application thereof
  • Green oxidized nano-diamond monodisperse colloid solution, and preparation, secondary dispersion method and antibacterial application thereof
  • Green oxidized nano-diamond monodisperse colloid solution, and preparation, secondary dispersion method and antibacterial application thereof

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Effect test

Embodiment 1

[0044] A kind of preparation method of green oxidized nano-diamond monodisperse colloidal solution of the present embodiment, the steps are as follows:

[0045]Get 350g diameter and be that the ball milling bead of 0.08~0.1mm is put into the sealable ball mill jar that volume is 100ml size, add the nano-diamond of 0.45g (Hebei Satellite Chemical Co., Ltd.) and 50g 10% hydrogen peroxide, set ball mill (model : QM-1SP2, Nanjing University Instrument Factory) the rotating speed is 580r / min, the ball milling time is 2h, and then directly the ball mill jar is ultrasonically removed for 15min to remove excess hydrogen peroxide, and a clear and transparent colloidal solution is obtained, as attached image 3 , and its dynamic light scattering characterization, as attached Figure 4 as shown in a. Through X-ray diffraction, it was found that compared with the original nano-diamond powder, the content of graphite and amorphous carbon in the oxidized nano-diamond was reduced, as shown ...

Embodiment 2

[0050] A kind of preparation method of green oxidized nano-diamond monodisperse colloidal solution of the present embodiment, the steps are as follows:

[0051] Get 500g of ball milling beads with a diameter of 0.05 to 0.1mm and put them into a 200ml airtight ball milling jar, add 0.8g of nano-diamond (Hebei Satellite Chemical Co., Ltd.) and 100g of 20% hydrogen peroxide, and set the ball mill (model: QM-1SP2, Nanjing University Instrument Factory) rotating speed is 560r / min, ball milling time is 4h, and then the ball mill jar is ultrasonically removed for 15min to remove excess hydrogen peroxide, and a clear and transparent colloidal solution is obtained, which is characterized by dynamic light scattering , as attached Figure 5 a.

[0052] The above-mentioned secondary dispersion method of the green oxidized nano-diamond monodisperse colloidal solution, the specific steps are as follows:

[0053] (i) Use a rotary evaporator to remove excess water from the obtained clear an...

Embodiment 3

[0056] A kind of preparation method of green oxidized nano-diamond monodisperse colloidal solution of the present embodiment, the steps are as follows:

[0057] Get 400g of ball milling beads with a diameter of 0.05 to 0.1mm and put them into a 200ml airtight ball mill jar, add 2g of nano-diamond (Hebei Satellite Chemical Co., Ltd.) and 100g of 30% hydrogen peroxide, and set the ball mill (model: QM -1SP2, Nanjing University Instrument Factory) rotating speed is 560r / min, temperature is set at 70°C, ball milling time is 6h, and then the ball mill jar is ultrasonically removed for 15min to remove excess hydrogen peroxide, and a clear and transparent colloidal solution is obtained, and the Perform dynamic light scattering characterization, as attached Figure 7 a.

[0058] The above-mentioned secondary dispersion method of the green oxidized nano-diamond monodisperse colloidal solution, the specific steps are as follows:

[0059] (i) Use a rotary evaporator to remove excess wa...

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Abstract

The invention discloses preparation, a secondary dispersion method and antibacterial application of a green oxidized nano-diamond colloid solution. A technology process comprises the following steps:mechanically grinding nano-diamond raw powder and hydrogen peroxide, and performing ultrasonic treatment to obtain a clear and transparent colloid solution; performing rotary evaporation on the obtained colloid solution to obtain paste with the content of nano-diamond being 20-70%; and dissolving the paste in water to regain a clear and transparent colloid solution. The nano-diamond colloid solution prepared by the invention can be applied to the fields of precise grind, polishing processing, composite materials, lubricating oil, medicine and health and the like; and meanwhile, according to the invention, secondary dispersion of the nano-diamond is realized, so that the dispersed nano-diamond can be more conveniently transported, and the practicability is enhanced.

Description

technical field [0001] The invention belongs to the technical field of nano-diamond processing, and in particular relates to a green oxidized nano-diamond monodisperse colloid solution and its preparation, secondary dispersion method and antibacterial application. Background technique [0002] In addition to inheriting the advantages of diamond, nano-diamond also has the characteristics of nano-materials, has excellent mechanical, thermal, optical, electrical properties, stable chemical properties and good biocompatibility, so it is used in precision grinding and polishing. And lubricating oil and other fields have potential application value. Nano-diamonds are formed by agglomeration of particles with a size of 4-12nm. The average particle size of nano-diamonds produced industrially is about 2um, and the particle size ranges from several hundred nanometers to more than ten microns. Agglomerates are hard agglomerates formed by the collision of liquid carbon droplets formed ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/28B82Y30/00A01N59/00A01P1/00
Inventor 曹郁
Owner 曹郁