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Graphene oxide-PADA molding material and preparation method and application thereof

A molding material, graphene technology, applied in chemical instruments and methods, other chemical processes, special treatment targets, etc., can solve problems affecting adsorption performance, unfavorable recovery of heavy metal pollutants, adsorbent recycling, etc., to achieve good molding effect, Significant economic and environmental benefits, good water resistance

Active Publication Date: 2019-12-03
山东利特纳米技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the traditional adsorption materials themselves are mostly powder, which is not conducive to the recovery of heavy metal pollutants and the recycling of adsorbents, it needs to be molded. However, the usual molding treatment will affect its adsorption performance to a certain extent.

Method used

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  • Graphene oxide-PADA molding material and preparation method and application thereof
  • Graphene oxide-PADA molding material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] a) Weigh 3.002g DAC (acryloyloxyethyltrimethylammonium chloride), 1.73g AMPS (2-acrylamide-2-methylpropanesulfonic acid) and 15.28g AM (acrylamide), add 180g water to 250mL Stir in a beaker to dissolve into an aqueous solution;

[0021] b) adjust the pH value to 6 with 0.1mol / L NaOH solution;

[0022] c) Add 0.05g ammonium persulfate and 0.05g sodium sulfite, pour into a three-necked flask, stir magnetically at 40°C for 4h, and let stand for 2 days, the product is a colorless viscous fluid;

[0023] d) Transfer the colorless viscous fluid obtained in step c) to a mixing tank, add 2g of graphene oxide powder, and disperse at a high speed of 2000r / min for 1h;

[0024] e) Add ethanol solution, black colloidal substance precipitates, continue to add excess ethanol solution until the black colloidal substance no longer precipitates, and remove unreacted acrylamide.

[0025] f) The black gelatinous substance was taken out, dried in vacuum at 40° C., pulverized, and stored i...

Embodiment 2

[0027] a) Weigh 1.501g DAC (acryloyloxyethyltrimethylammonium chloride), 0.865g AMPS (2-acrylamide-2-methylpropanesulfonic acid) and 7.64g AM (acrylamide), add 90g water to 250mL Stir in a beaker to dissolve into an aqueous solution;

[0028] b) adjust the pH value to 6 with 0.1mol / L NaOH solution;

[0029] c) Add 0.025g ammonium persulfate and 0.025g sodium sulfite, pour into a three-necked flask, stir magnetically at 40°C for 2 hours, and let stand for 2 days, the product is a colorless viscous fluid;

[0030] d) Transfer the colorless viscous fluid obtained in step c) to a mixing tank, add 1 g of graphene oxide powder, and disperse at a high speed of 2000 r / min for 0.5 h;

[0031] e) Add ethanol solution, black colloidal substance precipitates, continue to add excess ethanol solution until the black colloidal substance no longer precipitates, and remove unreacted acrylamide.

[0032] f) The black gelatinous substance was taken out, dried in vacuum at 40° C., pulverized, a...

Embodiment 3

[0034] a) Weigh 6.004g DAC (acryloxyethyltrimethylammonium chloride), 3.46g AMPS (2-acrylamide-2-methylpropanesulfonic acid) and 30.56g AM (acrylamide), add 360g water to 500mL Stir in a beaker to dissolve into an aqueous solution;

[0035] b) adjust the pH value to 6 with 0.1mol / L NaOH solution;

[0036] c) Add 0.1g ammonium persulfate and 0.1g sodium sulfite, pour into a three-necked flask, stir magnetically at 40°C for 6h, and let stand for 2 days, the product is a colorless viscous fluid;

[0037] d) Transfer the colorless viscous fluid obtained in step c) to a mixing tank, add 4g of graphene oxide powder, and disperse at a high speed of 2000r / min for 2h;

[0038] e) Add ethanol solution, black colloidal substance precipitates, continue to add excess ethanol solution until the black colloidal substance no longer precipitates, and remove unreacted acrylamide.

[0039] f) The black gelatinous substance was taken out, dried in vacuum at 40° C., pulverized, and stored in a d...

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Abstract

The invention relates to a graphene oxide-PADA molding material and a preparation method and application thereof, and belongs to the field of water treatment materials. The preparation method is characterized in that a certain amount of DAC, a certain amount of AMPS and a certain amount of AM are adopted to prepare an aqueous solution which is mixed uniformly, the pH value of the system is adjusted to 6, and then ammonium persulfate and sodium sulfite are added for ternary radical polymerization, and then graphene oxide powder is added for high-speed dispersion, finally excessive ethanol solution is added for multiple times until a black colloidal substance is no longer precipitated, unreacted acrylamide is removed, and vacuum drying is carried out on the black colloidal substance, so thatthe graphene oxide-PADA molding material is obtained. The graphene oxide-PADA molding material can be recycled as an adsorbent material in water treatment. The molding material prepared by the methodof the invention has no influence on the original adsorption performance, but also can be well molded and can be recycled.

Description

technical field [0001] The invention relates to the technical field of water treatment materials, in particular to a preparation method and application of a graphene oxide-PADA molding material. Background technique [0002] At present, the widely used adsorbents mainly include activated carbon, zeolite molecular sieves, graphene, and natural biosorbents. They have the advantages of large specific surface area, stable physical and chemical properties, and ideal adsorption and removal of heavy metals. Since the traditional adsorption materials are mostly powder, which is not conducive to the recovery of heavy metal pollutants and the recycling of adsorbents, it needs to be molded. However, the usual molding treatment will affect its adsorption performance to a certain extent. Therefore, how to make the traditional adsorption materials have the characteristics of recyclability and recycling while maintaining the excellent adsorption performance for heavy metals has become a t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/20B01J20/30C02F1/28
CPCB01J20/20B01J20/264B01J20/30C02F1/288C02F2303/16
Inventor 宋肖肖侯士峰刘同浩马乐
Owner 山东利特纳米技术有限公司