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Carbon composite gelatin sponge and preparation method thereof

A gelatin sponge and carbon composite technology, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of poor water-oil selectivity, long cross-linking time, restricted application, etc., and achieve good oil adsorption and cross-linking time. Short, low production cost effect

Inactive Publication Date: 2017-11-17
WUHAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the currently prepared gelatin sponge has defects such as long crosslinking time, low strength, poor toughness, and poor selectivity to water and oil, which restricts its application in the removal of oil pollutants in water bodies.

Method used

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  • Carbon composite gelatin sponge and preparation method thereof
  • Carbon composite gelatin sponge and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0025] A carbon composite gelatin sponge and a preparation method thereof. The specific steps of the preparation method described in this embodiment are:

[0026] Step 1. Mix gelatin and deionized water at a solid-to-liquid ratio of 2.5 to 20kg / m 3 Mix and stir at 30-60°C for 20-40 minutes to obtain a gelatin solution.

[0027] Step 2, according to the mass ratio of the gelatin solution: metal salt: nano-carbon material being 100: (0.1~1): (10-20), adding metal salt and nano-carbon material to the gelatin solution, stirring evenly, to obtain a mixture.

[0028] Step 3: According to the volume ratio of the mixed solution: formaldehyde solution being 100: (0.3-1), add the formaldehyde solution to the mixed solution, stir for 0.5-1 hour, and obtain the hydrogel.

[0029] Step 4, freezing the hydrogel at -40~-20°C for 6~10 hours, and then drying in a freeze dryer for 42~52 hours to obtain a carbon-composite gelatin sponge.

[0030] The metal salt described in this implementati...

Embodiment 2

[0034] A carbon composite gelatin sponge and a preparation method thereof. This embodiment is the same as Embodiment 1 except metal salt and nano-carbon material.

[0035] The metal salt described in this implementation is cobalt acetate.

[0036] The nano-carbon material in this implementation is graphene.

[0037] The carbon-composite gelatin sponge prepared in this example has uniform pore size distribution, good hydrophobicity and lipophilicity, high strength and good adsorption to oil.

Embodiment 3

[0039] A carbon composite gelatin sponge and a preparation method thereof. This embodiment is the same as Embodiment 1 except metal salt and nano-carbon material.

[0040] The metal salt is nickel acetate.

[0041] The nano carbon material is fullerene.

[0042] The carbon-composite gelatin sponge prepared in this example has uniform pore size distribution, good hydrophobicity and lipophilicity, high strength and good adsorption to oil.

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Abstract

The invention relates to carbon composite gelatin sponge and a preparation method thereof. According to the technical scheme, gelatin and deionized water are mixed in the solid-to-liquid ratio of 2.5-80 kg / m<3> and stirred at the temperature of 30-80 DEG C, a gelatin solution is obtained; metal salt and a nano-carbon material are added to the gelatin solution in the mass ratio of the gelatin solution, the metal salt and the nano-carbon material being 100:(0.1-5):(0-30), the mixture is stirred uniformly and a mixed liquid is obtained. A formaldehyde solution is added to the mixed liquid in the volume ratio of the mixed liquid to the formaldhyde solution being 100:(0.3-3), the mixture is stirred for 0.5-1 h, and hydrogel is obtained; the hydrogel is frozen at the temperature of subzero 40 DEG C-subzero 2 DEG C for 6-10 h and dried in a freezer dryer for 42-52 h, and the carbon composite gelatin sponge is obtained. The preparation method has the characteristics of simple synthetic process, low cost, environment-friendliness, short crosslinking time and easiness in control, and the prepared carbon composite gelatin sponge is uniform in pore size distribution, good in hydrophobic and lipophilic property, good in strength and good in oil adsorption.

Description

technical field [0001] The invention belongs to the technical field of gelatin sponge. Specifically relates to a carbon composite gelatin sponge and a preparation method thereof. Background technique [0002] With the development of modern industry, oil pollution incidents occur frequently, especially sudden water environment oil pollution incidents. Because oil is difficult to biodegrade in water and difficult to remove, it has strong bioaccumulation after entering the environment, causing potential hidden dangers to humans and marine organisms. Therefore, the rapid and efficient removal of oil pollutants in water is of great significance. [0003] At present, the commonly used methods for removing oil pollutants in water bodies include adsorption treatment, chemical dispersion and sedimentation treatment, microbial degradation and on-site combustion, etc. These methods have their own limitations, such as long treatment time and easy to produce secondary pollution. In co...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/30
CPCB01J20/205B01J20/24B01J2220/46
Inventor 梁峰李俊怡张海军黄亮沈玲张少伟
Owner WUHAN UNIV OF SCI & TECH
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