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Graphene modified material, and preparation method and application thereof

A graphene modification, graphene technology, applied in graphene, chemical instruments and methods, alkali metal oxides/hydroxides, etc.

Pending Publication Date: 2021-05-28
JIAOZUO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the large-scale use of graphene as an adsorbent will have separation and regeneration problems. Therefore, it is necessary to develop a graphene composite material that is efficient, low-cost, easy to regenerate and separate, and apply this material to a wider range of separation and purification.

Method used

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  • Graphene modified material, and preparation method and application thereof
  • Graphene modified material, and preparation method and application thereof
  • Graphene modified material, and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0032] A kind of preparation method of graphene modified material, comprises the steps:

[0033] (1) Graphene oxide@Fe 3 o 4 Preparation of:

[0034] S1, the graphene and FeCl 3 ·6H 2 O and FeCl 2 4H 2 After O was added to water for ultrasonic blending, FeCl 3 ·6H 2 O and FeCl 2 4H 2 The ratio of the total amount of O to the mass of graphene is 1:100. In a vacuum tube furnace, under an argon atmosphere of 50 sccm, after the temperature rise rate is 5°C / min from room temperature to 750°C, After annealing for 6 hours, cool to room temperature and filter to obtain the intermediate;

[0035] S2. Anneal the intermediate prepared in step S1 under vacuum conditions, raise the temperature from normal temperature to 600°C at a rate of 5°C / min in an argon atmosphere, keep it warm for 3 hours after reaching the highest temperature, and cool to room temperature , washed with deionized water and ethanol in turn, dried in vacuum to constant weight, and prepared graphene oxide@Fe ...

Embodiment 2

[0041] A kind of preparation method of graphene modified material, comprises the steps:

[0042] (1) Graphene oxide@Fe 3 o 4 Preparation of:

[0043] S1, the graphene and FeCl 3 ·6H 2 O and FeCl 2 4H 2 After O was added to water for ultrasonic blending, FeCl 3 ·6H 2 O and FeCl 2 4H 2 The ratio of the total amount of O to the mass of graphene is 1:60. In a vacuum tube furnace, under an argon atmosphere of 45 sccm, after increasing the temperature from room temperature to 700 °C at a rate of 5 °C / min, After annealing for 7 hours, cool to room temperature and filter to obtain the intermediate;

[0044] S2. Anneal the intermediate prepared in step S1 under vacuum conditions, raise the temperature from normal temperature to 625°C at a rate of 5°C / min in an argon atmosphere, keep it warm for 2.5h after reaching the highest temperature, and cool to At room temperature, after washing with deionized water and ethanol in turn, vacuum drying to constant weight, the prepared gr...

Embodiment 3

[0050] A kind of preparation method of graphene modified material, comprises the steps:

[0051] (1) Graphene oxide@Fe 3 o 4 Preparation of:

[0052] S1, the graphene and FeCl 3 ·6H 2 O and FeCl 2 4H 2 After O was added to water for ultrasonic blending, FeCl 3 ·6H 2 O and FeCl 2 4H 2 The ratio of the total amount of O to the mass of graphene is 1:10. In a vacuum tube furnace, under an argon atmosphere of 40 sccm, after increasing the temperature from room temperature to 650 °C at a rate of 5 °C / min, After annealing for 8 hours, cool to room temperature and filter to obtain the intermediate;

[0053] S2. Anneal the intermediate prepared in step S1 under vacuum conditions, raise the temperature from normal temperature to 650°C at a rate of 5°C / min in an argon atmosphere, keep it warm for 2h after reaching the highest temperature, and cool to room temperature , washed with deionized water and ethanol in turn, dried in vacuum to constant weight, and prepared graphene ox...

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Abstract

The invention relates to the technical field of graphene modified materials, and concretely relates to a graphene modified material, and a preparation method and application thereof. The preparation method comprises the following steps: firstly, preparing a graphene oxide@Fe3O4 material, then performing reduction treatment on the surface of graphene oxide to obtain modified graphene, and finally under the action of an activating agent , grafting weakly acidic polyacrylic resin to obtain the graphene modified material. The prepared graphene modified material can be applied to medicine extraction and purification, rare earth element separation and purification and heavy metal treatment of sewage.

Description

technical field [0001] The invention relates to the technical field of graphene modified materials, in particular to a graphene modified material and its preparation method and application. Background technique [0002] At present, a large number of adsorption materials have been reported to remove heavy metals in water, such as activated carbon, fly ash, biomass adsorbents, etc., and nanomaterials are considered to be a more effective way to remove heavy metals in wastewater due to their large specific surface area. High efficiency adsorption material. Since graphene was first developed, due to its excellent physical and chemical properties such as large theoretical specific surface area, excellent mechanical strength, high electrical conductivity and thermal conductivity, it has been used in chemical power sources, optoelectronic devices and heterogeneous catalysis. received widespread attention. [0003] Graphene is an emerging two-dimensional carbon material with excel...

Claims

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Application Information

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IPC IPC(8): C01B32/184C01B32/194B01J20/20B01J20/28B01J20/30B01D15/08C02F1/28C02F101/20
CPCC01B32/184C01B32/194B01J20/20B01J20/28009B01J20/3078B01J20/3085B01D15/08C02F1/288C02F2101/20
Inventor 樊丽梅葛东杰杜娟刘忠阳成战胜行春丽
Owner JIAOZUO UNIV
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