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A kind of mussel-based biomimetic magnetic oil-absorbing material and its preparation method

A magnetic absorption and mussel technology, applied in chemical instruments and methods, other chemical processes, alkali metal compounds, etc., to achieve the effects of good convenient recovery, good oil absorption performance and application prospects

Inactive Publication Date: 2020-06-02
TIANJIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, this kind of magnetic composite material formed by introducing natural biomass sunflower stem pith and using mussel biomimetic effect to realize quick and convenient recovery after oil absorption treatment has not been reported yet.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 1) Biomass cleaning treatment: Take a certain amount of sunflower stem pith and cut it into a disc with a thickness of 0.5cm, wash it with 60°C deionized water for 2-3 times, wash it with isopropanol for 2-3 times, and dry it naturally at room temperature .

[0024] 2) Formation of polydopamine layer: Add hydrochloric acid to 0.1mol / L tris solution to adjust the pH to 8.5, soak the washed sunflower stem pith slices in 150mL of the above buffer solution, fully absorb for 3 hours, then add Dopamine, so that its concentration is 2 mg / mL, reacted under stirring for 24 hours, the product was taken out, washed twice with deionized water, and dried at room temperature for 24 hours.

[0025] 3) Calcination to form a magnetic composite: the above product is immersed in a 2.5mol / L ferric nitrate solution, taken out after fully adsorbed, dried at 50°C for 4h, and then calcined in an Ar atmosphere at 600°C for 7h to remove the biomass template and obtain a porous Road Fe / C complex...

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PUM

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Abstract

The invention discloses a mussel shell-based bionic magnetic oil absorbing material and a preparation method thereof, and belongs to the technical field of environment function material preparation. The preparation method comprises the following steps: constructing a composite material by utilizing a natural spongy biomass, namely, sunflower stem pith, as a structure template; generating a strongadsorption force layer by utilizing a self-polymerization reaction of dopamine under a weak alkaline condition based on a mussel shell bionic principle; then, calcining adsorbed metal ions at a high temperature to obtain a porous Fe / C composite body; finally, realizing high-efficiency oil absorption through hydrophobic modification. The mussel shell-based bionic magnetic oil absorbing material canachieve the advantages of a natural biomass sponge structure, and can realize the characteristics of facilitating recycling, enriching and the like of magnetic particles, so that the mussel shell-based bionic magnetic oil absorbing material has a good application implementation prospect.

Description

technical field [0001] The invention belongs to the technical field of preparation of environmental functional materials, and specifically relates to a mussel-based bionic magnetic oil-absorbing material and a preparation method thereof. The natural biomass sunflower stem pith is used as a template and dopamine with strong adhesion characteristics is introduced by using the mussel bionic principle. Preparation of this type of material provides a new method. Background technique [0002] The continuous prosperity of the world economy has led to the rapid development of industries such as oil exploration and maritime trade and transportation. At the same time, it is accompanied by increasingly severe oil pollution problems in the ocean and waters. This has become a persistent hot spot in the research of marine and water environment and ecological restoration. Oil-absorbing materials that enrich oil pollutants by physical adsorption are a kind of promising materials. [0003] ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/22B01J20/28B01J20/30
CPCB01J20/0229B01J20/06B01J20/20B01J20/22B01J20/28009
Inventor 张武韩茜雅王雅鑫
Owner TIANJIN UNIV OF SCI & TECH