Dipeptide aerogel and preparation method and application thereof

An airgel and hydrogel technology, applied in the field of dipeptide airgel and its preparation, can solve the problems of low separation efficiency, poor selectivity, secondary pollution, etc., and achieve a single component, fast speed, and obvious effect Effect

Active Publication Date: 2019-05-31
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional oil-water separation methods include chemical methods (flocculation separation, combustion, etc.), physical methods (centrifugation, gravity separation, etc.) and biological methods (microbial degradation), etc. Although these methods can achieve a certain oil-water separation effect, there is still separation efficiency. Low, poor selectivity, complex operation, secondary pollution and other problems

Method used

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  • Dipeptide aerogel and preparation method and application thereof
  • Dipeptide aerogel and preparation method and application thereof
  • Dipeptide aerogel and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Embodiment 1, the preparation of phenylalanine dipeptide toluene gel

[0045] 1) Dissolve 1.5 mg of phenylalanine dipeptide in 15 μL of hexafluoroisopropanol to obtain a solution of dipeptide in hexafluoroisopropanol (also called solution a) with a concentration of 0.1 g / mL and store at 4 °C More than 10min to fully dissolve;

[0046] 2) Add 475 μL of toluene to solution a to obtain liquid b, and leave liquid b to stand still for 5 minutes to obtain a toluene gel of phenylalanine dipeptide.

[0047] Physical picture of dipeptide toluene gel figure 1 As shown, the gel does not flow after being inverted, and there will be no liquid flowing out, and the appearance is uniform and transparent, indicating that the gel has good mechanical strength and internal components are uniform.

Embodiment 2

[0048] Embodiment 2, the preparation of phenylalanine dipeptide ethanol gel

[0049]1) Dissolve 1.5 mg of phenylalanine dipeptide in 15 μL of hexafluoroisopropanol to obtain a solution of dipeptide in hexafluoroisopropanol (also called solution a) with a concentration of 0.1 g / mL and store at 4 °C More than 10min to fully dissolve;

[0050] 2) Add 475 μL of toluene to solution a to obtain liquid b, and place liquid b statically for 5 minutes to obtain toluene gel of phenylalanine dipeptide;

[0051] 3) Add 1 mL of ethanol to the toluene gel, replace it with toluene, take out the liquid phase solution (mixed solution of toluene and ethanol) after 6 hours, add 1 mL of ethanol to the gel phase again, and repeat this 6 times , the toluene was completely replaced by ethanol to obtain an ethanol gel of the dipeptide.

[0052] Physical picture of dipeptide ethanol gel figure 2 As shown, the gel will not flow even after inversion. Compared with the toluene gel of dipeptide, it tur...

Embodiment 3

[0053] Embodiment 3, the preparation of phenylalanine dipeptide hydrogel

[0054] 1) Dissolve 1.5 mg of phenylalanine dipeptide in 15 μL of hexafluoroisopropanol to obtain a solution of dipeptide in hexafluoroisopropanol (also called solution a) with a concentration of 0.1 g / mL and store at 4 °C More than 10min to fully dissolve;

[0055] 2) Add 475 μL of toluene to solution a to obtain liquid b, and place liquid b statically for 5 minutes to obtain a toluene gel of phenylalanine dipeptide;

[0056] 3) Add 1 mL of ethanol to the toluene gel, replace it with toluene, take out the liquid phase solution (mixed solution of toluene and ethanol) after 6 hours, add 1 mL of ethanol to the gel phase again, and repeat this 6 times , the toluene was completely replaced by ethanol to obtain an ethanol gel of the dipeptide.

[0057] 4) Add 1mL of water to the dipeptide ethanol gel, replace it with ethanol, take out the liquid phase solution (mixed solution of ethanol and water) after 6 h...

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Abstract

The invention discloses dipeptide aerogel and a preparation method thereof. The specific surface area of the dipeptide aerogel is 20-60 m<2> / g, the density is 1.5-5 mg / cm<3>, and the porosity is 99.5-99.85%. The preparation method comprises the following steps that organic gel of dipeptide is converted into alcohol gel through solvent replacement, then the alcohol gel is replaced with hydrogel, and finally, the hydrogel is freeze-dried to obtain the dipeptide aerogel. The prepared aerogel is good in stability, large in specific surface area and low in density, has a good oil-water separation effect, and can serve as a novel, safe and efficient oil-water separation material.

Description

technical field [0001] The invention belongs to the technical field of preparation of airgel materials, and relates to a dipeptide airgel and its preparation method and application. Background technique [0002] Airgel is a new type of material that replaces the liquid in the gel with air and still maintains the three-dimensional structure of the gel. It is usually obtained by drying organic gels or hydrogels. Airgel has the advantages of high porosity, low density, high specific surface area and low thermal conductivity, which makes it widely used in separation, sensing, catalysis, energy storage, temperature resistance and heat insulation and other fields. Polypeptide aerogels not only have the characteristics of traditional aerogels, but also have unique properties such as easy preparation of raw materials, good biocompatibility and degradability, which make them widely used in medicine, food, environment and other fields Base. [0003] Peptide molecular gels are formed...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J13/00B01D17/022
Inventor 李峻柏李现宝费进波
Owner INST OF CHEM CHINESE ACAD OF SCI
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