Method of synthesizing carbon nanomaterial doped polyvinyl alcohol/sodium alginate gel ball adsorbent

A carbon nanomaterial, polyvinyl alcohol technology, applied in chemical instruments and methods, alkali metal compounds, alkali metal oxides/hydroxides, etc. Mechanical properties, strong adsorption effect

Inactive Publication Date: 2018-01-09
TONGJI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It mainly includes fullerene, carbon nanotubes, graphene quantum dots, graphene, nano-mesoporous carbon, etc. Carbon nanomaterials have the advantages of good stability, high strength, and high specific surface area, and carbon nanomaterials are easy to modify and oxidize. It has good adsorp

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  • Method of synthesizing carbon nanomaterial doped polyvinyl alcohol/sodium alginate gel ball adsorbent

Examples

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Example Embodiment

[0030] Example 1

[0031] (1) 200 mg of graphite oxide powder was placed in 100 mL of deionized water, and after stirring evenly, the solution was placed in an ultrasonic apparatus to ultrasonicate for 3 h, so that the graphite oxide was exfoliated into a graphene oxide water dispersion system;

[0032] (2) Dissolve 1 g of polyvinyl alcohol solid in 10 mL of deionized water at 50°C in a hot water bath, stir with a glass rod at intervals of 10 minutes, take out when the polyvinyl alcohol is completely dissolved, and let stand until it returns to normal temperature;

[0033] (3) adding the dissolved polyvinyl alcohol in step (2) together with 2.0g sodium alginate into 100mL mixed carbon nanomaterial dispersion system, stirring mechanically until fully mixed, and placing for 2h to make the bubbles in the mixed solution disappear;

[0034] (4) dissolving boric acid and calcium chloride in water, and adjusting pH to neutrality to prepare a 3% boric acid-5% calcium chloride mixed so...

Example Embodiment

[0036] Example 2

[0037] (1) Place 500 mg of graphite oxide and 500 mg of multi-walled carbon nanotubes in 100 mL of distilled water, stir evenly, and place the solution in an ultrasonic instrument to ultrasonicate for 5 hours to prepare a mixed carbon nanomaterial dispersion system;

[0038] (2) Dissolve 0.5 g of polyvinyl alcohol solid in 10 mL of deionized water in a 70°C hot water bath, stir with a glass rod at intervals of 10 minutes, take out when the polyvinyl alcohol is completely dissolved, and let stand until it returns to normal temperature;

[0039] (3) adding the dissolved polyvinyl alcohol in step (2) together with 2g sodium alginate into 100mL mixed carbon nanomaterial dispersion system, stirring mechanically until fully mixed, and placing for 2h to make the bubbles in the mixed solution disappear;

[0040] (4) dissolving boric acid and calcium chloride in water, and adjusting pH to neutrality to prepare a 5% boric acid-1% calcium chloride mixed solution;

[0...

Example Embodiment

[0042] Example 3

[0043] (1) Place 200 mg of graphite oxide and 100 mg of graphene quantum dots in 100 mL of distilled water, stir evenly, and place the solution in an ultrasonic apparatus to ultrasonicate for 5 h to prepare a mixed carbon nanomaterial dispersion system;

[0044] (2) Dissolve 2g of polyvinyl alcohol solids in 10 mL of deionized water in a 70°C hot water bath, stir with a glass rod at intervals of 10 minutes, take out when the polyvinyl alcohol is completely dissolved, and let stand to restore normal temperature;

[0045] (3) Add the dissolved polyvinyl alcohol in step (2) together with 5g of sodium alginate into 100mL mixed carbon nanomaterial dispersion system, stir mechanically until it is completely mixed, and leave it for 2h to make the bubbles in the mixed solution disappear.

[0046] (4) Dissolving boric acid and calcium chloride in water, and adjusting the pH to neutrality to prepare a 3% boric acid-5% calcium chloride mixed solution.

[0047] (5) dro...

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Abstract

The invention belongs to the field of chemical synthesis and relates to a method of synthesizing a carbon nanomaterial doped polyvinyl alcohol/sodium alginate gel ball adsorbent. The method comprisesthe following steps: adding carbon nanomaterial powder into water to obtain a carbon nanomaterial water disperse system; adding sodium alginate and polyvinyl alcohol into the water disperse system toobtain a mixed water disperse system; dropwise adding the mixed water disperse system into a boric acid-calcium chloride mixed solution to obtain the carbon nanomaterial doped polyvinyl alcohol/sodiumalginate gel ball adsorbent. According to the invention, the raw materials are easily available, the cost is relatively low, and the biocompatibility is strong; the production method is simple and easy, can realize continuous operation and is suitable for large-scale production; the product has a good adsorption effect, is easy to collect and recycle and avoids environmental pollution.

Description

technical field [0001] The invention belongs to the field of environmental material synthesis, in particular to a method for synthesizing a polyvinyl alcohol / sodium alginate gel ball adsorbent doped with carbon nanomaterials. Background technique [0002] Water is the source of life, but with the rapid development of industry, the situation of water environment pollution is becoming more and more serious, so it is particularly important to develop efficient water treatment technology. , easy operation, strong selectivity and other advantages have received more and more attention. However, conventional adsorbent materials such as activated carbon have low adsorption efficiency for pollutants, and it is difficult to separate, recover and regenerate. Therefore, the development of efficient adsorbent materials is particularly critical for the development of adsorption technology. [0003] Sodium alginate is a linear polysaccharide extracted from natural seaweed. It is composed...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/28B01J20/30
Inventor 马杰孙怡然欧恬陈君红
Owner TONGJI UNIV
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