Graphene oxide/ polymer gel as well as preparation method and application thereof

A graphene and polymer technology, applied in the directions of alkali metal oxides/hydroxides, alkali metal compounds, chemical instruments and methods, etc., can solve the problems of low specific adsorption efficiency of dye wastewater and complex synthesis process, etc. To achieve the effect of easy operation, simple preparation process and simple adsorption process

Inactive Publication Date: 2016-11-23
SHANDONG UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing adsorbents are usually prepared through complex preparation processes and long chemical modification of various raw materials, and the specific adsorption efficiency for dye wastewater is not high
[0005] Gels are widely used in the field of sewage treatment, but composite gels usually need to add cross-linking agents, initiators, etc., or through hydrothermal synthesis, or through other synthetic methods such as electron beam radiation, microwave radiation, photoinitiated polymerization, etc. Preparation, the synthesis process is still relatively complicated

Method used

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  • Graphene oxide/ polymer gel as well as preparation method and application thereof
  • Graphene oxide/ polymer gel as well as preparation method and application thereof
  • Graphene oxide/ polymer gel as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] (1) Take polyacrylamide (PAM molecular weight ≥ 5 × 10 5 , Kermel, Tianjin, Q / 12HB 4083-2009) 50mg was added to a 5mg / mL graphene oxide solution to form a 10mL solution, and stirred at room temperature to mix evenly to obtain a graphene oxide / polyacrylamide gel. Such as figure 1 Shown in the middle left figure.

[0048] (2) Freeze-dry the prepared graphene oxide / polyacrylamide gel to obtain 100 mg xerogel. Such as figure 1 Shown in the figure on the right.

[0049] (3) Get the waste water containing cationic dyestuff (methylene blue), add dry graphene oxide / polyacrylamide xerogel to waste water, press graphene oxide / polyacrylamide gel and dyestuff mass ratio 3.3 in waste water: 1 Serve, shake to mix.

[0050] (4) The mixed solution after adsorption is separated from the gel and the aqueous solution with a filter cloth. Cationic dye (methylene blue) wastewater before and after adsorption figure 2 as shown in a.

[0051] (5) According to the characteristic absorp...

Embodiment 2

[0054] (1) Take polyacrylamide (PAM molecular weight ≥ 5 × 10 5 , Kermel, Tianjin, Q / 12HB 4083-2009) 40mg was added to a 6mg / mL graphene oxide solution to make a 10mL solution, and stirred at room temperature to mix evenly to obtain a graphene oxide / polyacrylamide gel.

[0055] (2) Freeze-dry the prepared graphene oxide / polyacrylamide gel to obtain 100 mg xerogel.

[0056] (3) Get the waste water containing cationic dye (rhodamine 6G), add graphene oxide / polyacrylamide xerogel to waste water, and dye mass ratio 3.3 in graphene oxide / polyacrylamide gel and waste water: 1 Serve, shake to mix.

[0057] (4) The mixed solution after adsorption is separated from the gel and the aqueous solution with a filter cloth. Cationic dye (rhodamine 6G) wastewater before and after adsorption figure 2 as shown in b.

[0058] (5) According to the characteristic absorption wavelength of the cationic dye (rhodamine 6G), the standard curve of its concentration and absorbance was drawn, and the...

Embodiment 3

[0061] (1) Take polyacrylamide (PAM molecular weight ≥ 5 × 10 5 , Kermel, Tianjin, Q / 12HB 4083-2009) 60mg was added to 4mg / mL graphene oxide solution to make a 10mL solution, shake and stir at room temperature to mix evenly to obtain graphene oxide / polyacrylamide gel.

[0062] (2) Freeze-dry the prepared graphene oxide / polyacrylamide gel to obtain 100 mg xerogel.

[0063] (3) Get the wastewater containing cationic dyes (rhodamine B), add the dry graphene oxide / polyacrylamide gel to the wastewater, and press the graphene oxide / polyacrylamide gel to the dye mass ratio of 5 in the wastewater : 1 cast, oscillate to mix.

[0064] (4) The mixed solution after adsorption is separated from the gel and the aqueous solution with a filter cloth. Cationic dye (rhodamine B) wastewater before and after adsorption figure 2 as shown in c.

[0065] (5) According to the characteristic absorption wavelength of the cationic dye (rhodamine B), draw the standard curve of its concentration and ...

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Abstract

The invention discloses graphene oxide / polymer gel as well as a preparation method and application thereof. The preparation method comprises the following steps: adding polyacrylamide into a graphene oxide solution to form a blended solution, performing stirring for uniform mixing at room temperature to obtain graphene oxide / polyacrylamide gel, and performing freeze drying on the obtained gel to obtain an adsorbent. The adsorbent provided by the invention is a rapid and efficient purifying adsorbent for purifying cationic dye wastewater, can rapidly and efficiently adsorb cationic dye in the wastewater, and is simple in preparation route, convenient in operation, high in adsorption capacity and easy to recycle. When the adsorbent provided by the invention is applied to purification of the dye wastewater, especially the cationic dye wastewater, the cationic dye in the wastewater can be rapidly and efficiently adsorbed, so that the operation is convenient and the efficiency is high.

Description

technical field [0001] The invention belongs to the technical field of polymer materials and the technical field of water pollution treatment, and relates to a graphene oxide / polymer gel and its preparation method and application, in particular to a purification of cationic dye wastewater based on graphene gel adsorption method. Background technique [0002] With the rapid development of industry and science and technology, the problem of environmental pollution in our country is becoming more and more serious. Among them, dye wastewater has become one of the important wastewater pollution. The increasing sophistication of dye industry technology makes dye wastewater various and complex. Dye wastewater contains a large amount of organic matter and salt, and generally has strong acidity and alkalinity, which brings great challenges to the purification of wastewater. Among them, cationic dyes (such as methylene blue, crystal violet, methyl green, etc.) are important chemica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/28B01J20/30C02F1/28C02F101/30
CPCB01J20/20B01J20/265B01J20/28047C02F1/288C02F2101/308
Inventor 宋沙沙赵增典杨玉燕刘洋
Owner SHANDONG UNIV OF TECH
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