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Treatment method of oleic acid zinc waste residue produced by synthesis of quantum dots

A treatment method and technology of quantum dots, applied in the separation/purification of carboxylic acid compounds, organic chemistry, etc., can solve problems such as difficult to treat waste residue and environmental pollution, and achieve the effect of convenient treatment

Active Publication Date: 2021-06-29
SUZHOU XINGSHUO NANOTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the synthesis of quantum dots usually produces a non-fluid waste residue containing a large amount of zinc oleate, liquid organic matter, and a small amount of quantum dot solids
It is difficult for waste companies to dispose of this waste residue, and the discharge of this waste residue into the environment will cause environmental pollution

Method used

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  • Treatment method of oleic acid zinc waste residue produced by synthesis of quantum dots

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Take 200g waste and 500 ml of ethanol, mix it. The mixture was heated to 75 ° C and the steam reflux treatment was carried out such that the waste residue was dispersed into the alcohol to form a first dispersion system. The zinc in the waste residue is dispersed in a small droplet to the first dispersion system; the quantum dots are present in the form of precipitation; other organic materials are mutually solved with ethanol.

[0017] Next, the first dispersion system was separated at 65 ° C, the centrifugal speed was 4500 rpm, and the centrifugal time was 3 minutes. Thus, the quantum dot is separated from the first dispersion system, and the zinc oleic acid is in the liquid.

[0018] The centrifugal liquid was allowed to stand at 4 ° C, and zinc olerate was precipitated from the liquid. The liquid was centrifuged at 4 ° C and the centrifugal speed was 4500 rpm, centrifugal time was 5 minutes, resulting in zinc acid zinc and a small amount of waste liquid.

Embodiment 2

[0020] Take 100G waste and 800 ml of n-butanol, mix it. The mixture was heated to 75 ° C under reduced pressure, and the steam reflux treatment was carried out such that the waste residue was dispersed into the alcohol to form a first dispersion system. The zinc in the waste residue is dispersed in a small droplet to the first dispersion system; the quantum dots are present in the form of precipitation; other organic materials are mutually solved with n-butanol.

[0021] Next, the first dispersion system was separated at 60 ° C, the centrifugal speed was 5000 rpm, and the centrifugal time was 4 minutes. Thus, the quantum dot is separated from the first dispersion system, and the zinc oleic acid is in the liquid.

[0022] The centrifugal liquid was allowed to stand at 4 ° C, and zinc olerate was precipitated from the liquid. The liquid was centrifuged at 4 ° C and the centrifugal speed was 5000 rpm, centrifugal time was 5 minutes, resulting in zinc acid zinc and a small amount of w...

Embodiment 3

[0024] The 200g waste residue was taken with 360 mL of ethanol, 40 ml of water. The mixture was heated to 78 ° C and the steam reflux treatment was carried out such that the waste residue was dispersed into the alcohol to form a first dispersion system. The zinc in the waste residue is dispersed in a small droplet to the first dispersion system; the quantum dots are present in the form of precipitation; other organic materials are mutually solved with n-butanol.

[0025] Next, the first dispersion system was separated at 60 ° C, the centrifugal speed was 3500 rpm, and the centrifugal time was 4 minutes. Thus, the quantum dot is separated from the first dispersion system, and the zinc oleic acid is in the liquid.

[0026] The centrifugal liquid was allowed to stand at -10 ° C, and the zinc oleate was precipitated from the liquid. The liquid was centrifuged at -10 ° C, centrifugal speed of 5000 rpm, centrifugal time was 5 minutes, resulting in zinc acid zinc and a small amount of wa...

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Abstract

The invention discloses a method for treating waste residue containing zinc oleate produced by synthesizing quantum dots. The method comprises the following steps: step 1): at a first temperature, disperse the waste residue in alcohol to form a first dispersion system; step 2): separate the first dispersion system at a second temperature, and the oil Zinc acid is separated from the first dispersion, and the second temperature is lower than the first temperature. According to the treatment method of the oleic zinc waste residue produced by the synthesis of quantum dots of the present invention, the use of alcohol, such as ethanol or n-butanol, can easily separate most of the oleic zinc in the waste residue, and then the waste company can handle it conveniently remaining waste.

Description

Technical field [0001] The present application belongs to the field of quantum dots, and more particularly to methods of treating hydrolic acid zinc-containing waste produced by synthesis quantum dots. Background technique [0002] Quantum dots are also referred to as semiconductor nanocrystals, and the half-peaks of the emission spectrum are very narrow, so there is a very wide range of applications in the field of display, biomarkers. [0003] However, the synthesis of quantum dots typically produces a non-fluid-stateless waste containing a large amount of oleate, liquid organic substance, and a small amount of quantum dot solids. Waste companies are difficult to deal with such waste slag, and this waste sagging is discharged into the environment to lead to environmental pollution. Thus, this waste residue is urgently needed. Inventive content [0004] For the above technical problems, the present application provides a method of treating oil-containing-acid zinc-containing wa...

Claims

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Application Information

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IPC IPC(8): C07C57/12C07C51/43
CPCC07C51/43C07C57/12
Inventor 王允军张龙珠朱凯文马其玉
Owner SUZHOU XINGSHUO NANOTECH CO LTD
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