Silanized boron nitride modified super-hydrophobic sponge for oil/water separation and preparation method of silanized boron nitride modified super-hydrophobic sponge

A super-hydrophobic sponge, boron nitride technology, applied in separation methods, chemical instruments and methods, liquid separation, etc., can solve the problems of unstable sponge and limit large-scale application, and achieve excellent flame retardant properties and compressive properties, The effect of overcoming the interface compatibility problem and improving the stability
CN112409634AInactive Publication Date: 2021-02-26ZHENGZHOU UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHENGZHOU UNIV
Publication Date
2021-02-26
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention belongs to the technical field of oil-water separation, and particularly relates to silanized boron nitride modified super-hydrophobic sponge for efficient oil / water separation and a preparation method thereof. The preparation method comprises the following steps: dipping commercial melamine sponge into a suspension solution of octadecyltrimethoxysilane-modified boron nitride, and then conducting drying to obtain the modified super-hydrophobic sponge. The silanized boron nitride modified super-hydrophobic sponge obtained by the invention shows better super-hydrophobicity, the oiladsorption capacity of the silanized boron nitride modified super-hydrophobic sponge is 50-100 times that of commercial melamine sponge, and after 20 continuous absorption periods, the absorption performance is not obviously reduced, and it is indicated that the silanized boron nitride modified sponge has remarkable recyclability. The prepared modified super-hydrophobic sponge has excellent flameretardant property. Compared with a traditional method that the super-hydrophobic coating is physically attached to the sponge, the stability of the silanized boron nitride modified sponge is remarkably improved due to covalent binding of alkyl silane and the surface of the framework.
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Description

technical field

[0001] The invention belongs to the technical field of oil-water separation, and in particular relates to a silanized boron nitride-modified superhydrophobic sponge for efficient oil / water separation and a preparation method thereof. Background technique

[0002] In recent years, marine oil spills have occurred frequently, posing a serious threat to the marine environment and aquatic ecosystems. In addition, the development of industries such as mining, food, textiles, leather, metal processing, steel and automobiles produces a large amount of oily wastewater, causing serious damage to marine ecosystems and human health. Therefore, oil-water separation is an urgent problem to be solved in modern industrial pollution and marine environment. Traditional oil-water separation technologies include separation, filtration, centrifugation, flotation and electrochemical methods. Among the various oil removal methods currently developed, adsorption technology has att...

Claims

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