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Preparation method for composite material of sulfonated graphene/polypyrrole

A technology of sulfonated graphene and composite materials, applied in chemical instruments and methods, other chemical processes, water/sewage treatment, etc., can solve the problems of low silver ion adsorption capacity and poor adsorption effect, and achieve good adsorption recovery performance , Conducive to direct recovery, the effect of large specific surface area

Inactive Publication Date: 2012-10-03
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These traditional adsorbents generally have the disadvantages of low adsorption capacity and poor adsorption effect on silver ions.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The preparation method of sulfonated graphene / polypyrrole composite material, it comprises the steps:

[0021] 1) Prepare sulfonated graphene according to the method reported in the literature (Nano Letts 2008, 8, 1679-1682.);

[0022] 2) Disperse and dissolve sulfonated graphene in water, and then add pyrrole to obtain solution A, wherein the concentration of sulfonated graphene is 0.5mg / mL, and the concentration of pyrrole is 0.1mol / L;

[0023] 3) Dissolve ammonium persulfate in water so that the molar ratio of ammonium persulfate to pyrrole is 1:1 to obtain an aqueous solution of ammonium persulfate;

[0024] 4) Add the aqueous solution of ammonium persulfate to solution A, and stir for 12 hours;

[0025] 5) The product obtained in step 4) was filtered, washed until the filtrate was colorless, and vacuum-dried to obtain a sulfonated graphene / polypyrrole composite material.

[0026] 20mg of sulfonated graphene / polypyrrole composite material was added to 20mL of wate...

Embodiment 2

[0028] The preparation method of sulfonated graphene / polypyrrole composite material, it comprises the steps:

[0029] 1) Prepare sulfonated graphene according to the method reported in the literature (Nano Letts 2008, 8, 1679-1682.);

[0030] 2) Disperse and dissolve sulfonated graphene in water, and then add pyrrole to obtain solution A, wherein the concentration of sulfonated graphene is 1mg / mL, and the concentration of pyrrole is 0.1mol / L;

[0031] 3) Dissolve ammonium persulfate in water so that the molar ratio of ammonium persulfate to pyrrole is 0.5:1 to obtain an aqueous solution of ammonium persulfate;

[0032] 4) Add the aqueous solution of ammonium persulfate to solution A, and stir for 24 hours;

[0033] 5) The product obtained in step 4) was filtered, washed until the filtrate was colorless, and vacuum-dried to obtain a sulfonated graphene / polypyrrole composite material.

[0034] Add 30mg of sulfonated graphene / polypyrrole composite material into 20mL of water co...

Embodiment 3

[0036] The preparation method of sulfonated graphene / polypyrrole composite material, it comprises the steps:

[0037] 1) Prepare sulfonated graphene according to the method reported in the literature (Nano Letts 2008, 8, 1679-1682.);

[0038] 2) Disperse and dissolve sulfonated graphene in water, and then add pyrrole to obtain solution A, wherein the concentration of sulfonated graphene is 1.5mg / mL, and the concentration of pyrrole is 0.2mol / L;

[0039] 3) Dissolve ammonium persulfate in water so that the molar ratio of ammonium persulfate to pyrrole is 2:1 to obtain an aqueous solution of ammonium persulfate;

[0040] 4) Add the aqueous solution of ammonium persulfate to solution A, and stir for 36 hours;

[0041] 5) The product obtained in step 4) was filtered, washed until the filtrate was colorless, and vacuum-dried to obtain a sulfonated graphene / polypyrrole composite material.

[0042] Add 40mg of sulfonated graphene / polypyrrole composite material into 20mL of water co...

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PUM

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Abstract

The invention relates to a preparation method of a silver-ion absorbent, and an application of the silver-ion absorbent, belonging to the field of industrial waste water treatment. The preparation method for composite material of sulfonated graphene / polypyrrole comprises the following steps that 1) sulfonated grapheme is prepared via a chemical oxidization method by utilizing natural graphite; 2) the sulfonated grapheme is dispersed and dissolved in water, and pyrrol is added to obtain solution A, wherein the concentration of the sulfonated grapheme is 0.5-1.5mg / mL, and the concentration of the pyrrol is 0.05-0.2mol / L; 3) ammonium peroxydisulfate is dissolved in water, a mole ratio of the ammonium peroxydisulfate to the pyrrol is 0.5:1 to 2:1, and aqueous solution of the ammonium peroxydisulfate is obtained; 4) the aqueous solution of the ammonium peroxydisulfate is added into the solution A, and is mixed for a reaction for 12-36 hours; and 5) the obtained product in the step 4) is filtered and washed until the filter liquor is colorless, and the composite material of the sulfonated graphene / polypyrrole is obtained after the filter liquor is dried by vacuum baking. The composite material of the sulfonated graphene / polypyrrole has a remarkable absorbing and recycling performance for silver ions.

Description

[0001] technical field [0002] The invention relates to a preparation method of a silver ion adsorbent (sulfonated graphene / polypyrrole composite material) and the application of the silver ion adsorbent, belonging to the field of industrial wastewater treatment. Background technique [0003] With the continuous and rapid development of my country's social economy, the impact of domestic wastewater and industrial wastewater on the environment is becoming more and more serious. If the wastewater is not treated, the harmful substances in the wastewater may participate in the food chain cycle and accumulate in the human body, endangering human health and causing many environmental problems. In wastewater treatment, heavy metal wastewater is one of the most difficult wastewater to treat. At present, the methods for treating heavy metal wastewater mainly include adsorption method, ion precipitation method, exchange resin method and so on. However, the ion precipitation method ...

Claims

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Application Information

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IPC IPC(8): C08G73/06C08K9/04C08K3/04B01J20/26B01J20/30C02F1/28C02F1/58C02F1/70
Inventor 李亮王台黄浩郑华明吕淑君喻湘华
Owner WUHAN INSTITUTE OF TECHNOLOGY
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