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Preparation method of sulfonated grapheme/polyaniline composite

A technology of sulfonated graphene and composite materials, applied in chemical instruments and methods, other chemical processes, adsorption water/sewage treatment, etc., can solve problems such as difficult processing, easy agglomeration, etc., to improve stability and solubility , The effect of cheap raw materials

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

Graphene has excellent electrical, mechanical and thermal properties, and a large specific surface area, but graphene is prone to agglomeration due to nano-effects and is difficult to process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The preparation method of sulfonated graphene / polyaniline composite material, it comprises the steps:

[0022] 1) Prepare sulfonated graphene according to the method reported in the literature (Nano Letts 2008, 8, 1679-1682.);

[0023] 2) Disperse and dissolve sulfonated graphene in water, and then add aniline to obtain solution A, wherein the concentration of sulfonated graphene is 1mg / mL, and the concentration of aniline is 0.05mol / L;

[0024] 3) Dissolve ammonium persulfate in hydrochloric acid so that the molar ratio of ammonium persulfate to aniline is 0.5:1 to obtain a hydrochloric acid solution of ammonium persulfate;

[0025] 4) Add the hydrochloric acid solution of ammonium persulfate into solution A, and stir for 12 hours;

[0026] 5) The product obtained in step 4) was filtered, washed until the filtrate was colorless, and vacuum-dried to obtain a sulfonated graphene / polyaniline composite material.

[0027] Add 20mg of sulfonated graphene / polyaniline compos...

Embodiment 2

[0029] The preparation method of sulfonated graphene / polyaniline composite material, it comprises the steps:

[0030] 1) Prepare sulfonated graphene according to the method reported in the literature (Nano Letts 2008, 8, 1679-1682.);

[0031] 2) Disperse and dissolve sulfonated graphene in water, and then add aniline to obtain solution A, wherein the concentration of sulfonated graphene is 1.5mg / mL, and the concentration of aniline is 0.1mol / L;

[0032] 3) Dissolve ammonium persulfate in hydrochloric acid so that the molar ratio of ammonium persulfate to aniline is 1:1 to obtain a hydrochloric acid solution of ammonium persulfate;

[0033] 4) Add the hydrochloric acid solution of ammonium persulfate into solution A, and stir for 24 hours;

[0034] 5) The product obtained in step 4) was filtered, washed until the filtrate was colorless, and vacuum-dried to obtain a sulfonated graphene / polyaniline composite material.

[0035] Add 30mg of sulfonated graphene / polyaniline composi...

Embodiment 3

[0037] The preparation method of sulfonated graphene / polyaniline composite material, it comprises the steps:

[0038] 1) Prepare sulfonated graphene according to the method reported in the literature (Nano Letts 2008, 8, 1679-1682.);

[0039] 2) Disperse and dissolve sulfonated graphene in water, and then add aniline to obtain solution A, wherein the concentration of sulfonated graphene is 1mg / mL, and the concentration of aniline is 0.2mol / L;

[0040] 3) Dissolve ammonium persulfate in hydrochloric acid so that the molar ratio of ammonium persulfate to aniline is 2:1 to obtain a hydrochloric acid solution of ammonium persulfate;

[0041] 4) Add the hydrochloric acid solution of ammonium persulfate into solution A, and stir for 18 hours;

[0042] 5) The product obtained in step 4) was filtered, washed until the filtrate was colorless, and vacuum-dried to obtain a sulfonated graphene / polyaniline composite material.

[0043] Add 40mg of sulfonated graphene / polyaniline composite...

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PUM

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Abstract

The invention relates to a preparation method of a mercury ion absorbent and application of the mercury ion absorbent, and belongs to the field of industrial wastewater treatment. A preparation method of a sulfonated grapheme / polyaniline composite is characterized by comprising the following steps: preparing sulfonated grapheme by utilizing natural graphite through a chemical oxidation method; 2) dispersing and dissolving the sulfonated grapheme into water, and adding polyaniline to obtain solution A, wherein the concentration of the sulfonated grapheme is 1-2 mg / mL, and the concentration of the polyaniline is 0.02-0.5 mol / L; 3) dissolving ammonium persulfate into hydrochloric acid to obtain a molar ratio of ammonium persulfate to polyaniline of 0.5:1-2:1 so as to obtain hydrochloric acid solution of ammonium persulfate; 4) adding the hydrochloric acid solution of ammonium persulfate into the solution A, and stirring and reacting for 6-24 hours; and 5) filtering a product obtained in the step 4), washing until filtrate is colorless, and drying in vacuum to obtain the sulfonated grapheme / polyaniline composite. The preparation method, provided by the invention, has the characteristics of low cost and good absorption performance on mercury ions.

Description

[0001] technical field [0002] The invention relates to a preparation method of a mercury ion adsorbent and an application of the mercury ion adsorbent, belonging to the field of industrial wastewater treatment. Background technique [0003] With the rapid development of social economy, domestic wastewater and industrial wastewater discharged into the environment are increasing. Almost all of these wastewaters contain heavy metal ions, especially mercury metal ions. Mercury ions will not be degraded, but will participate in the food chain cycle, and eventually accumulate in the human body, endangering human health. Therefore, the development of new materials and new methods to deal with heavy metal pollution has become the focus of attention. At present, the adsorption method is the main method for treating mercury ions in wastewater, mainly using inorganic or organic adsorbents such as activated carbon, zeolite, and chitosan. However, these adsorbents have disadvantages...

Claims

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Application Information

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IPC IPC(8): C08G73/02C08K9/00C08K3/04C08L79/02B01J20/26C02F1/28
Inventor 李亮严欢胡军郑华明吕淑君喻湘华
Owner WUHAN INSTITUTE OF TECHNOLOGY
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