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Egg-based method for realizing hydrothermal synthesis of carbon quantum dots

A technology of carbon quantum dots and thermal synthesis, applied in chemical instruments and methods, nano-carbon, luminescent materials, etc., can solve the problem of high cost, achieve the effect of environmental friendliness, wide source of raw materials, and good controllability

Active Publication Date: 2014-02-19
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This invention uses low-temperature plasma to pyrolyze eggs, which requires special expensive equipment and high cost

Method used

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  • Egg-based method for realizing hydrothermal synthesis of carbon quantum dots
  • Egg-based method for realizing hydrothermal synthesis of carbon quantum dots
  • Egg-based method for realizing hydrothermal synthesis of carbon quantum dots

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Step 1: Take an egg, use an egg separator to separate the egg white and egg yolk, take the egg white and add water to dilute to 50mL, and centrifuge to remove insoluble matter at a centrifugation speed of 4000rpm. Step 2, put the centrifuged protein in a hydrothermal reaction kettle, and conduct a hydrothermal reaction at 150°C for 8.5 hours. In step 3, the reactants were centrifuged and dialyzed to obtain carbon quantum dots. The centrifugal speed was 4000 rpm, and the dialysis was carried out in a 1L beaker using a dialysis bag of 500 Da. The beneficial effect of this embodiment is that it does not need to use expensive instruments such as low-temperature plasma, and reduces the cost of preparing carbon quantum dots.

Embodiment 2

[0035] Step 1: Take an egg, use an egg separator to separate the egg white and egg yolk, take the egg yolk and add water to dilute to 50mL, and centrifuge to remove insoluble matter at a speed of 4000rpm. In step 2, the centrifuged egg yolk is placed in a hydrothermal reaction kettle, and subjected to a hydrothermal reaction at 150° C. for 8.5 hours. In step 3, the reactants were centrifuged and dialyzed to obtain carbon quantum dots. The centrifugal speed was 4000 rpm, and the dialysis was carried out in a 1L beaker using a dialysis bag of 500 Da. The beneficial effect of this embodiment is that it does not need to use expensive instruments such as low-temperature plasma, and reduces the cost of preparing carbon quantum dots.

Embodiment 3

[0037] Step 1. Take an egg, use an egg separator to separate the egg white and egg yolk, take the egg white and add water to dilute to 200mL, and centrifuge to remove insoluble matter at a centrifugation speed of 12000rpm. In step 2, the centrifuged egg yolk is placed in a hydrothermal reaction kettle, and the hydrothermal reaction is carried out at 180°C for 8 hours. In step 3, the reactants were centrifuged and dialyzed to obtain carbon quantum dots. The centrifugal speed was 12000 rpm, and the dialysis was carried out in a 5L beaker using a dialysis bag of 3500 Da. The beneficial effect of this embodiment is that it does not need to use expensive instruments such as low-temperature plasma, and reduces the cost of preparing carbon quantum dots.

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Abstract

The invention discloses an egg-based method for realizing hydrothermal synthesis of carbon quantum dots, which comprises the following steps: taking an egg, separating the egg white and the yolk, diluting the egg white or the yolk, centrifuging to remove insoluble substances, putting in a hydrothermal reaction kettle, performing hydrothermal reaction at 140-220 DEG C for 6-48 hours, centrifuging again, and performing dialysis treatment to obtain carbon quantum dots. The novel method for realizing hydrothermal synthesis of carbon quantum dots, provided by the invention, avoids use of low-temperature plasmas and other noble instruments.

Description

technical field [0001] The invention relates to a method for preparing inorganic nanometer materials, in particular to a method for hydrothermally synthesizing carbon quantum dots based on eggs. Background technique [0002] Hydrothermal synthesis has been widely used in the preparation of inorganic nanomaterials. The hydrothermal system simulates the deep sea environment, that is, the reaction raw materials are subjected to a liquid phase reaction in a non-equilibrium synthesis system of high temperature and high pressure, and nanoparticles with excellent properties can be prepared in various shapes. Hydrothermal synthesis has become a commonly used synthesis method in the field of nanomaterial preparation. [0003] As a novel allotrope of carbon, carbon quantum dots have the advantages of good water solubility, high luminous intensity, low biotoxicity, good biocompatibility, high chemical stability, and easy surface modification, so it is expected to replace Traditional ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02C09K11/65C01B32/15
Inventor 杨志徐明瀚王羽希胡南滔张亚非
Owner SHANGHAI JIAO TONG UNIV
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