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Preparation method and uses of iron-tannic acid skeleton modified composite film

A tannic acid and composite membrane technology, applied in separation methods, chemical instruments and methods, membrane technology, etc., can solve the problems of secondary pollution, frequent use, non-degradable organic matter, etc. Contamination, the effect of excellent separation

Inactive Publication Date: 2017-09-15
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Organic adsorption materials such as polypropylene, resin, polyurethane, and rubber materials are frequently used. They have the advantages of lipophilicity and hydrophobicity, good oil-water selectivity, high oil absorption ratio, and convenient recovery of oil spills. However, organic matter is not degradable, causing Secondary pollution

Method used

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  • Preparation method and uses of iron-tannic acid skeleton modified composite film
  • Preparation method and uses of iron-tannic acid skeleton modified composite film
  • Preparation method and uses of iron-tannic acid skeleton modified composite film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] step 1:

[0027] A 2×2cm stainless steel mesh was ultrasonically cleaned with acetone and absolute ethanol, dried, and impregnated in 20mL Fe 3+ and TA mixed solution, where Fe 3+ A mixed solution with a concentration of 1.0mg / mL and a concentration of TA of 1.0mg / mL was reacted for 3 minutes, then dried in an oven at 50°C for 3 minutes; Fe III -TA-1 modified composite membrane, the iron salt is Fe(NO 3 ) 3 9H 2 O.

[0028] Step 2:

[0029] Fe will be produced III -TA-1 modified composite membrane is fixed to the self-made oil-water separation device, wet the surface of the omentum with a small amount of distilled water, and then pour 100mL of a mixed solution of hexane and water with a volume ratio of 1:1 into the built device . In order to more accurately determine the oil-water separation efficiency of the composite membrane, the samples were divided into three parts, and each sample was tested three times. The whole experiment process was carried out under ...

Embodiment 2

[0034] step 1:

[0035] A 2×2cm stainless steel mesh was ultrasonically cleaned with acetone and absolute ethanol, dried, and impregnated in 20mL Fe 3+ and TA mixed solution, where Fe 3+ A mixed solution with a concentration of 5.0mg / mL and a concentration of TA of 5.0mg / mL was reacted for 3 minutes, then dried in an oven at 50°C for 3 minutes; 5Fe III -5TA-1 modified composite membrane.

[0036] Step 2:

[0037] 5Fe will be produced III -5TA-1 modified composite membrane was fixed to a self-made oil-water separation device, and the oil-water separation experiment was carried out according to the operation of step 2 in Example 1. The experimental results showed that the oil-water separation efficiency was 99.0%.

Embodiment 3

[0039] step 1:

[0040] A 2×2cm stainless steel mesh was ultrasonically cleaned with acetone and absolute ethanol, dried, and impregnated in 20mL Fe 3+ and TA mixed solution, where Fe 3+ A mixed solution with a concentration of 15mg / mL and a TA concentration of 15mg / mL was reacted for 3 minutes, then dried in an oven at 50°C for 3 minutes; 15Fe III -15TA-1 modified composite membrane.

[0041] Step 2:

[0042] 15Fe will be produced III -15TA-1 modified composite membrane was fixed to a self-made oil-water separation device, and the oil-water separation experiment was carried out according to the operation of step 2 in Example 1, and toluene was used instead of hexane. The experimental results showed that the oil-water separation efficiency was 98.8%.

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PUM

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Abstract

The invention provides a preparation method and uses of an iron-tannic acid skeleton modified composite film. The preparation steps comprise: preparing an iron salt solution and a tannic acid solution, mixing the iron salt solution and the tannic acid solution to obtain a mixed solution, placing a stainless steel net into the mixed solution, immersing, taking out, and drying to obtain the iron-tannic acid skeleton modified composite film, wherein the prepared film is named FeIII-TA modified composite film. According to the present invention, through the one-step immersing and self-assembly method, the FeIII-TA modified composite film is supported onto the surface of a metal net to form an organic-inorganic hybrid rough structure; and the operation process of the preparation method is simple, the raw materials are easy to obtain and non-pollution, and the environmental friendliness is met.

Description

technical field [0001] The invention relates to a preparation method and application of an iron-tannic acid skeleton modified composite film, which belongs to the technical field of preparation of environmental functional materials. Background technique [0002] Hydrophilic membranes have the characteristics of fouling resistance and high water flux, and have gradually become the main filter membrane materials. In recent years, the rapid development of inorganic ceramic membrane preparation and application research shows a good application prospect in the field of oil-water separation. [0003] Adsorption materials are mainly divided into natural organic materials, inorganic materials and organic synthetic materials. Natural organic materials include fibers, kenaf, raw cotton, and ordinary cotton. Natural organic materials have good biodegradability, and the research hotspot of researchers has always been to favor materials with high oil absorption rate and low cost. Inor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/06B01D69/12B01D67/00B01D17/022
CPCB01D71/06B01D17/02B01D67/0079B01D69/12
Inventor 戴江栋田苏君谢阿田常忠帅张瑞龙葛文娜蒋银花李春香闫永胜
Owner JIANGSU UNIV
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