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A kind of carborane-based superhydrophobic material and its preparation method and application

A technology of alkoxysilylpropylcarborane and carborane, which is applied in the field of preparation of superhydrophobic functional materials, can solve the problems of cumbersome preparation steps, limited stability and hydrophobicity of oil-water separation materials, and achieve simple operation of the preparation method , excellent stability and acid and alkali resistance, good effect

Active Publication Date: 2022-03-11
NANJING TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Wang et al. attached nano-silica particles on the surface of the sponge pores and modified dodecyltrimethoxysilane to obtain a superhydrophobic sponge for oil-water separation. The preparation steps of this method are cumbersome and the adsorption capacity for various oils is only 18.3. -46.8g / g
Luo Lei et al. chose n-octyltrichlorosilane to hydrophobically modify melamine sponge to obtain an oil-water separation material with limited stability and hydrophobicity.

Method used

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  • A kind of carborane-based superhydrophobic material and its preparation method and application
  • A kind of carborane-based superhydrophobic material and its preparation method and application
  • A kind of carborane-based superhydrophobic material and its preparation method and application

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Effect test

Embodiment 1

[0029] The melamine sponge was fully washed with water and ethanol and immersed in 4mg / ml dopamine Tris buffer, after stirring for 12 hours, it was taken out and washed with water and ethanol until the washing solution was clear, and vacuum-dried for 12 hours to obtain a polydopamine-coated sponge material. Put the obtained sponge into the ethanol solution of 20 mg / ml monosubstituted trimethoxysilylpropyl carborane, heat it at 60°C for 24 hours, take it out, wash it with ethanol three times, and dry it in vacuum to obtain the carborane covalent Connected superhydrophobic sponge material. The preparation method of the monosubstituted trimethoxysilylpropyl carborane is as follows: under the protection of nitrogen, dissolve 300 mg of o-carborane in 9 ml of anhydrous ether, and cool to 0 ° C and dropwise add 1.6 ml of n-butyllithium , stirred at room temperature for 3 hours, cooled to 0°C again, added 370 μl bromopropyltrimethoxysilane, stirred the mixture at room temperature for ...

Embodiment 2

[0034] The melamine sponge was fully washed with water and ethanol and immersed in 2mg / ml dopamine Tris buffer, after stirring for 12 hours, it was taken out and washed with water and ethanol until the washing solution was clear, and vacuum-dried for 12 hours to obtain a polydopamine-coated sponge material. Put the obtained sponge into a 10 mg / ml ethanol solution of monosubstituted trimethoxysilylpropyl carborane, heat it at 60°C for 24 hours, wash it with ethanol three times after taking it out, and obtain the carborane covalent Connected superhydrophobic sponge material. The preparation method of the monosubstituted trimethoxysilylpropyl carborane is as follows: under the protection of nitrogen, dissolve 300 mg of o-carborane in 9 ml of anhydrous ether, and cool to 0 ° C and dropwise add 1.6 ml of n-butyllithium , stirred at room temperature for 3 hours, cooled to 0°C again, added 370 μl bromopropyltrimethoxysilane, stirred the mixture at room temperature for 25 hours and qu...

Embodiment 3

[0037] The polyurethane sponge was fully washed with water and ethanol and immersed in 4mg / ml dopamine Tris buffer. After stirring for 12 hours, it was taken out and washed with water and ethanol until the washing solution was clear. After vacuum drying for 12 hours, polydopamine-coated sponge material was obtained. Put the obtained sponge into a 10 mg / ml ethanol solution of monosubstituted trimethoxysilylpropyl carborane, heat it at 40°C for 20 hours, wash it with ethanol three times after taking it out, and obtain the carborane covalent Connected superhydrophobic sponge material. The preparation method of the monosubstituted trimethoxysilylpropyl carborane is as follows: under the protection of nitrogen, dissolve 300 mg m-carborane in 9 ml of anhydrous ether, and cool to 0 ° C and dropwise add 1.6 ml of n-butyllithium , stirred at room temperature for 3 hours, cooled to 0°C again, added 370 μl bromopropyltrimethoxysilane, stirred the mixture at room temperature for 25 hours ...

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Abstract

The invention provides a carborane-based superhydrophobic material and its preparation method and application, belonging to the field of preparation of superhydrophobic functional materials. It includes: fully washing the hydrophilic sponge and immersing it in the dopamine solution, stirring it for several hours, taking it out and washing it with water and ethanol until the washing solution is clear, and drying it in vacuum for several hours to obtain a polydopamine-coated sponge material. Put the obtained sponge into an ethanol solution of a certain concentration of monosubstituted alkoxysilylpropyl carborane, heat it at 40-70°C for 20-40 hours, take it out, wash it with ethanol several times, and dry it in vacuum to obtain carboron A superhydrophobic sponge material covalently linked with alkanes; the present invention covalently links carborane on the entire surface of the sponge coated with polydopamine for the first time, and the preparation method is simple to operate, economical and environmentally friendly, and has low requirements for equipment. The prepared superhydrophobic sponge material can be used for oil-water separation and has stable superhydrophobicity, high adsorption capacity for various oils, and good oil-water separation effect. In conclusion, carborane-based superhydrophobic materials are of great application value in the field of superhydrophobic functional materials.

Description

technical field [0001] The invention belongs to the field of preparation of superhydrophobic functional materials, and in particular relates to a class of carborane-based superhydrophobic materials and a preparation method and application thereof. Background technique [0002] Carborane is a polyhedral cage structure compound composed of carbon, hydrogen and boron, which has excellent chemical stability and thermal stability. Carborane and its derivatives have been widely used in the fields of functional materials such as high temperature resistant materials, photoelectric materials and radiation protection materials, as well as in biomedicine, catalysts and other fields. However, there are very few studies on it in the field of superhydrophobic functional materials. Sabina et al. Zn 2+ , 1,4-benzenedimesylate and hydrophobic carborane linkers assembled into a metal-organic framework (MOF), and the MOF crystal surface can be chemically treated to remove some structural uni...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J9/40B01D17/022C02F1/40C08L75/04C08L61/28
CPCC08J9/405B01D17/0202C02F1/40C08J2375/04C08J2361/28C08J2479/04
Inventor 于海洲王勇
Owner NANJING TECH UNIV
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