Functional magnetic ionic liquid graphene adsorbent and preparation method and application thereof

A magnetic ionic liquid, ionic liquid technology, applied in chemical instruments and methods, preparation of test samples, other chemical processes, etc., can solve problems such as lack of dispersibility and limited functionalization of graphene

Inactive Publication Date: 2018-12-25
SUZHOU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional method of synthesizing magnetic graphene is mainly to synthesize ferroferric oxide magnetic nanoparticles first, and then use chemical synthesis to wrap graphene on

Method used

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  • Functional magnetic ionic liquid graphene adsorbent and preparation method and application thereof
  • Functional magnetic ionic liquid graphene adsorbent and preparation method and application thereof
  • Functional magnetic ionic liquid graphene adsorbent and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The preparation method of magnetic ionic liquid graphene adsorbent comprises the following steps:

[0028] S1. Synthesis of functional magnetic ionic liquid: the ionic liquid 1-butyl-3-methylimidazolium chloride ([C 4 min]Cl) and FeCl 3 ·6H 2 O according to the molar ratio of 1:1, mechanically stirred and reacted at 60°C for 24h, and left to stand to obtain a dark brown-yellow liquid. The dark brown-yellow liquid was divided into two layers, an aqueous phase and an ionic liquid phase, and the upper aqueous phase was poured The lower layer was washed twice with distilled water, and the unreacted raw materials were completely removed. Most of the water phase in the ionic liquid was removed by rotary vacuum evaporation, and then vacuum-dried at 80°C for 48 hours to obtain a pure magnetic ionic liquid-1-butyl -3-methylimidazolium tetrachloride ferric salt ([C 4 min] FeCl 4 );

[0029] S2. Synthesis of magnetic graphene: Accurately weigh 0.1000g of graphene powder, 2.94...

Embodiment 2

[0031] The preparation method of magnetic ionic liquid graphene adsorbent comprises the following steps:

[0032] S1. Synthesis of functional ionic liquid: the ionic liquid 1-butyl-3-methylimidazolium bromide ([C 4 min]Br) and FeCl 3 ·6H 2 O according to the molar ratio of 1:1, mechanically stirred and reacted at 25°C for 6 hours, and left to stand to obtain a dark brown-yellow liquid. The dark brown-yellow liquid was divided into two layers, an aqueous phase and an ionic liquid phase, and the upper aqueous phase was poured The lower layer was washed twice with distilled water, and the unreacted raw materials were completely removed. Most of the water phase in the ionic liquid was removed by rotary vacuum evaporation, and then vacuum-dried at 70°C for 24h to obtain a pure magnetic ionic liquid [C 4 min] FeBrCl 3 ;

[0033] S2. Synthesis of magnetic graphene: Accurately weigh 0.0390g of graphene powder, 11.110g of 1-butyl-3-methylimidazole bromide, and 4.952g of 1-butyl-3-m...

Embodiment 3

[0035] The preparation method of magnetic ionic liquid graphene adsorbent comprises the following steps:

[0036] S1. Synthesis of functional ionic liquid: the ionic liquid 1-hexyl-3-methylimidazolium chloride ([C 6 min]Cl 4 ) with FeCl 3 ·6H 2O according to the molar ratio of 1:1, mechanically stirred and reacted at 60°C for 24h, and left to stand to obtain a dark brown-yellow liquid. The dark brown-yellow liquid was divided into two layers, an aqueous phase and an ionic liquid phase, and the upper aqueous phase was poured The lower layer was washed twice with distilled water, and the unreacted raw materials were completely removed. Most of the water phase in the ionic liquid was removed by rotary vacuum evaporation, and then vacuum-dried at 80°C for 48 hours to obtain a pure magnetic ionic liquid-1-butyl -3-methylimidazolium tetrachloride ferric salt ([C 6 min] FeCl 4 );

[0037] S2. Synthesis of magnetic graphene: Accurately weigh 0.0399g graphene powder, 10.9901g 1-b...

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Abstract

The invention provides a functional magnetic ionic liquid graphene adsorbent and a preparation method and application thereof. The preparation method includes the steps of S1, mixing water-soluble trivalent ferric salt with ionic liquid proportionally to obtain brown-yellow magnetic ionic liquid after full reaction, separating the obtained magnetic ionic liquid by water extraction to remove unreacted objects and then performing vacuum drying to obtain pure-magnetic ionic liquid; S2, dissolving graphene in a water-soluble ionic liquid solution, adding the pure-magnetic ionic liquid and bivalentferric salt obtained in the step S1, adding ammonia water by dropping to obtain precipitate by anaerobic ultrasonic reaction at room temperature and pressure, and finally performing separation, purification, washing and drying to obtain functional magnetic graphene. The functional magnetic grapheen can enrich trace biotoxins, pesticides, veterinary drugs and ultraviolet adsorbents in complex matrix samples, early-state purification of the matrix samples is not needed before enrichment, and the process is simple, rapid and efficient.

Description

technical field [0001] The invention relates to a water body adsorption material, in particular to a magnetic ionic liquid graphene, a preparation method and its application in microcystin adsorption. Background technique [0002] With the rapid development of the global economy, the safety of drinking water and food is becoming more and more serious. According to research reports, microcystins, veterinary drugs, pesticides and ultraviolet absorbers have been detected in water bodies of local drinking water sources, while in food For example, aflatoxin, pesticide and hormone residues were detected in dairy products, honey and vegetable oil. The above-mentioned pollutants cause serious harm to organisms and even human bodies. [0003] Due to the complexity of matrix samples, sample pretreatment technology is particularly important for the simultaneous detection of multiple pollutants. At present, the pretreatment method used for the detection of trace pollutants in complex ...

Claims

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Application Information

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IPC IPC(8): B01J20/22B01J20/28B01J20/30G01N1/34G01N1/40
CPCB01J20/20B01J20/22B01J20/28009G01N1/34G01N1/405
Inventor 高仕谦张占恩刘小燕
Owner SUZHOU UNIV OF SCI & TECH
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