Graphene oxide surface arsenic-antimony double-imprinted polymer capable of being magnetically separated in underground medium and preparation method thereof

A graphene surface and imprinted polymer technology, applied in the direction of alkali metal compounds, chemical instruments and methods, alkali metal oxides/hydroxides, etc., can solve problems such as arsenic and antimony pollution, reduce agglomeration and facilitate elution and recombination, good adsorption effect

Pending Publication Date: 2022-02-15
JILIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to address the deficiencies of the above-mentioned prior art, to provide an arsenic-antimony double-imprinted polymer on the surface of graphene oxide that can be magnetically separated in an underground medium with high arsenic and antimony removal efficiency and good migration effect, and also relates to a Preparation method of arsenic-antimony double-imprinted polymer on graphene oxide surface that can be magnetically separated in underground media to solve the problem of directional remediation of arsenic-antimony pollution in groundwater

Method used

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  • Graphene oxide surface arsenic-antimony double-imprinted polymer capable of being magnetically separated in underground medium and preparation method thereof
  • Graphene oxide surface arsenic-antimony double-imprinted polymer capable of being magnetically separated in underground medium and preparation method thereof
  • Graphene oxide surface arsenic-antimony double-imprinted polymer capable of being magnetically separated in underground medium and preparation method thereof

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preparation example Construction

[0040] The preparation method of the arsenic-antimony double imprinted polymer on the surface of graphene oxide that can be magnetically separated in the above-mentioned underground medium comprises the following steps:

[0041] A. Ultrasonic disperse 0.3-0.86g of GO into 0.45L of ultrapure water until GO is evenly dispersed in the ultrapure water to stop, the time is about 1 hour, and then a stable GO suspension is obtained;

[0042] B. Add 2.916g of FeCl 3 and 2.502 g of FeSO 4 ·7H 2 O was dissolved in 50ml of deionized water, and then slowly poured into the suspension of A at room temperature. In order to mix evenly with A, pre-stirring was required for 40 minutes;

[0043] C. Increase the temperature of the solution in step B to 60°C, slowly add ammonia water dropwise to the solution under anaerobic conditions by in-situ precipitation method, so that the pH in the solution is greater than 10, and then continue to increase the temperature to 90°C and continue Stir for 4 ...

Embodiment 1

[0050] A. Ultrasonic disperse 0.3g GO into 450mL of ultrapure water for about 1 hour, and then obtain a stable GO suspension;

[0051] B. Add 2.916g of FeCl 3 and 2.502 g of FeSO 4 ·7H 2 O was dissolved in 50ml of deionized water, then slowly poured into the A suspension at room temperature, and mechanically stirred for 40min;

[0052] C. Increase the temperature of the solution in step B to 60°C, slowly add ammonia water dropwise to the solution under nitrogen protection, so that the pH in the solution is greater than 10, then continue to increase the temperature to 90°C and continue stirring for 4 hours;

[0053] D. Use a magnet to collect the product in the solution of step C, wash it repeatedly with ethanol and ultrapure water for 3 times, and then put the product in a vacuum drying oven at 60°C to dry to obtain Fe 3 o 4 / GO (MGO) material, where GO and Fe 3 o 4 The mass ratio is 0.14:1.

Embodiment 2

[0055] A. Ultrasonic disperse 0.54g GO into 450mL of ultrapure water for about 1 hour, and then obtain a stable GO suspension;

[0056] B. Add 2.916g of FeCl 3 and 2.502 g of FeSO 4 ·7H 2 O was dissolved in 50ml of deionized water, then slowly poured into the A suspension at room temperature, and mechanically stirred for 40min;

[0057] C. Increase the temperature of the solution in step B to 60°C, slowly add ammonia water dropwise to the solution under nitrogen protection, so that the pH in the solution is greater than 10, then continue to increase the temperature to 90°C and continue stirring for 4 hours;

[0058] D. Use a magnet to collect the product in the solution of step C, wash it repeatedly with ethanol and ultrapure water for 3 times, and then put the product in a vacuum drying oven at 60°C to dry to obtain Fe 3 o 4 / GO (MGO) material, where GO and Fe 3 o 4 The mass ratio is 0.25:1.

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Abstract

The invention relates to a graphene oxide surface arsenic-antimony double-imprinted polymer capable of being magnetically separated in an underground medium and a preparation method thereof. The material is prepared by loading GO on Fe3O4, through an As and Sb ion surface imprinting method, GO is dispersed into ultra-pure water, FeCl3 and FeSO4 solutions are poured into the ultra-pure water under the anaerobic condition, ammonia water is slowly dropwise added, and MGO is prepared; and As (III) and Sb (III) template ions and MMA are dissolved in ultra-pure water together, MGO is added, EGDMA is also added, the temperature is raised to 60 DEG C, AIBN is added and stirred, and the obtained cross-linked product is repeatedly washed with ethanol and deionized water, cleaned with NaOH, and dried to obtain the target product. The prepared polymer has a specific recognition effect on arsenic and antimony pollution of underground water, the arsenic and antimony adsorption performance of an iron-based adsorption material is effectively improved, directional migration and recovery of the polymer material in the underground water are facilitated through the magnetic characteristic, and the polymer material is suitable for in-situ remediation of the arsenic and antimony pollution of the underground water.

Description

technical field [0001] The invention belongs to the technical field of in-situ restoration of groundwater pollution, in particular to a repair reagent that can be magnetically separated, in particular to an arsenic-antimony double-imprinted polymer on the surface of graphene oxide with magnetic separation characteristics and a preparation method thereof. It can be used as nano-remediation materials for in-situ remediation of groundwater pollution. Background technique [0002] With the rapid development of world industry, human production activities and social behaviors have brought a certain degree of threat to the natural environment. Among them, the pollution of arsenic and antimony in groundwater has become a major concern at present. Arsenic and antimony enter the groundwater from the natural environment, migrate and enrich, and then enter the human body through different channels, causing varying degrees of damage to the human body. Therefore, in order to reduce the i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/28B01J20/30C02F1/28C02F101/10C02F101/20C02F103/06
CPCB01J20/06B01J20/20B01J20/268B01J20/28009C02F1/288C02F2101/103C02F2101/20C02F2103/06
Inventor 迟子芳刘馨阳孙飞扬张鹏东
Owner JILIN UNIV
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