Method for mass production of water-soluble fluorescent carbon nanoparticles

A carbon nanoparticle, water-soluble technology, applied in the field of carbon nanoparticle preparation, to achieve the effect of excellent fluorescence properties

Inactive Publication Date: 2011-07-27
SUZHOU FANGSHENG OPTOELECTRONICS CO LTD
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

These fluorescent properties include fluorescence emission from the visible region to the near-infrared region and fluorescence with upconversion properties. These fluorescent properties are of great significance to the application research in the biological field. However, there are a large number of carbon nanoparticles with these two fluorescent properties at the same time. , a simple synthetic method has not been reported

Method used

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  • Method for mass production of water-soluble fluorescent carbon nanoparticles
  • Method for mass production of water-soluble fluorescent carbon nanoparticles
  • Method for mass production of water-soluble fluorescent carbon nanoparticles

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Embodiment 1

[0037] Take activated carbon as the carbon source for preparing carbon nanoparticles, take 2-4g of activated carbon and add 70-200ml of hydrogen peroxide to 30% hydrogen peroxide solution by mass percentage (or volume percentage), and put the mixture containing the two Put the glass reaction vessel (or other materials such as Teflon) on a magnetic stirrer and stir for 10 minutes, and make a black suspension after stirring evenly, then put the reaction vessel into a 300W power ultrasonic cleaner, and ultrasonically After 2 to 4 hours, after the reaction, vacuum filter the suspension (the filter paper used for suction filtration is 300 mesh medium-speed filter paper) to obtain a brown-black filtrate. Finally, the filtrate is slowly evaporated to dryness at 60°C to remove unreacted hydrogen peroxide. The obtained black solid was dissolved in deionized water at room temperature to obtain purified water-soluble carbon nanoparticles. The purity of the activated carbon and hydrogen p...

Embodiment 2

[0043] Take activated carbon as the carbon source for preparing carbon nanoparticles, get 3g activated carbon and join 100ml hydrogen peroxide mass percentage (or volume percentage) in the hydrogen peroxide solution of 40%, the glass reaction vessel ( or other material reaction vessels, such as Teflon) were placed on a magnetic stirrer and stirred for 15 minutes, and a black suspension was formed after stirring evenly, and then the reaction vessel was placed in a 300W power ultrasonic cleaner, and ultrasonic 3.5 at a frequency of 40KHz After the reaction, the suspension was vacuum-filtered (300 mesh medium-speed filter paper for suction filtration) to obtain a brown-black filtrate, and finally the filtrate was slowly evaporated to dryness at 70°C to remove unreacted hydrogen peroxide, and the obtained The black solid was dissolved in deionized water at room temperature to obtain purified water-soluble carbon nanoparticles. The purity of the activated carbon and hydrogen peroxi...

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Abstract

The invention discloses a method for mass production of water-soluble fluorescent carbon nanoparticles, which comprises the following steps: adding activated carbon, which is used as a carbon source, into an oxidant water solution, and stirring the mixed solution by a magnetic stirrer to obtain a black suspension; treating the suspension with ultrasonic in a 300W ultrasonic cleaning apparatus under the frequency of 40KHz for 2-4 hours; after the ultrasonic reaction finishes, carrying out vacuum filtration on the suspension to obtain a brownish black filtrate; and drying the filtrate by distillation at 60-70 DEG C, and dissolving the obtained black solid in deionized water at room temperature to obtain the purified water-soluble carbon nanoparticles. In the method disclosed by the invention, the water-soluble carbon nanoparticles, which can emit fluorescence from the visible light region to the near-infrared light region and has upconversion fluorescence property and other excellent optical properties, are synthesized under the action of the ultrasonic and strong oxidant. The method disclosed by the invention is simple and easy to implement, and has the advantages of low price, accessible raw materials and environmental protection.

Description

technical field [0001] The invention belongs to the field of preparation of nanometer materials, in particular to a method for preparing carbon nanometer particles with water solubility and fluorescence properties. Background technique [0002] Fluorescent nanoparticles have attracted great attention from the scientific community recently due to their potential great applications in the fields of electronics and biology. At present, typical fluorescent particles are developed from lead, cadmium, silicon and their compounds, but the potential harm and weak photostability of these materials to the environment have also attracted widespread attention. [0003] The nanostructure of carbon is considered to be the basic structural unit of future electronic devices, new luminescent materials and catalytic materials, and has great potential application value in the fields of biosensing and biomedicine. Related research is of great significance in the field of nanoscience and technol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/65B82Y40/00
Inventor 刘阳李海涛康振辉何小蝶黄慧
Owner SUZHOU FANGSHENG OPTOELECTRONICS CO LTD
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