Preparation method of magnetic graphene-based aerogel with photocatalysis function

A magnetic graphene and aerogel technology, applied in the field of environmental pollutant treatment, can solve the problems of difficult degradation of benzo α pyrene and strong carcinogenicity, and achieve the effects of small size, easy operation and high enrichment function.

Inactive Publication Date: 2020-11-06
柴肖芳
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  • Abstract
  • Description
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Problems solved by technology

[0005] In order to solve the problem of difficult degradation and strong carcinogenicity of benzo-α-pyrene (BaP) in the current air pollutant polycyclic aromatic hydrocarbons, the present invention proposes a graphene-based airgel with photocatalytic degradation function and large adsorption capacity The preparation method can be widely used in the adsorption and degradation of benzo-α-pyrene (BaP)-contaminated systems, and has potential application prospects

Method used

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  • Preparation method of magnetic graphene-based aerogel with photocatalysis function
  • Preparation method of magnetic graphene-based aerogel with photocatalysis function
  • Preparation method of magnetic graphene-based aerogel with photocatalysis function

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Embodiment 1

[0044] A preparation method of photocatalytic functional magnetic graphene-based airgel, comprising the following steps:

[0045] (1) Preparation of tetranitrophthalocyanine iron

[0046] Add 60mL of ethylene glycol, 6.02g of 4-nitrophthalonitrile, 2g of ferrous chloride and 6mL of 1,8-diazabicycloundec-7-ene into a 250mL three-necked flask; Condenser tube, nitrogen protection, reflux at 180 ° C for 3 hours; after the reaction is completed, filter while hot, wash with ethylene glycol, methanol, and acetone twice, wash with 2% hydrochloric acid until colorless, and then wash with deionized water until neutral, and finally washed with ethanol; cooled, grinded, and vacuum-dried at 90°C for 12 to 15 hours to obtain black powder tetranitrophthalocyanine iron.

[0047] (2) Preparation of tetraaminoiron phthalocyanine (FeTAPc)

[0048]Weigh 3.20g of the above iron tetranitrophthalocyanine powder and 12.4g of sodium sulfide into a 250mL flask, add about 70mL of N,N-dimethylformamide...

Embodiment 2

[0056] A kind of graphene oxide (γ-Fe 2 o 3 / rGO) preparation method, comprising the following steps:

[0057] (1) Preparation of graphene oxide-based airgel

[0058] Put 30mL of 98% concentrated sulfuric acid and place the beaker in an ice-water bath, then add 1g graphene and 0.5g anhydrous NaNO 3 , slowly add 3.0g of potassium permanganate under strong stirring, control the temperature below 20°C, stir for 3h, then place the beaker in a constant temperature water bath at 35°C (±3°C), continue stirring for 30min, and place the beaker in a 98°C In the oil bath, add deionized water continuously while stirring, pay attention to ensure that the temperature of the suspension does not exceed 100°C, keep stirring for 15 minutes, dilute the above suspension with 100mL deionized water, and then add an appropriate amount of 30% hydrogen peroxide to reduce the remaining permanganate Potassium and the generated manganese dioxide insoluble matter make them into colorless and soluble ma...

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Abstract

The invention provides a preparation method of magnetic graphene-based aerogel with a photocatalysis function. The preparation method comprises the following steps: preparing a photocatalytic materialtetraamino iron phthalocyanine, then loading magnetic particles on a graphene substrate to prepare magnetic graphene-based aerogel, and finally grafting the tetraamino iron phthalocyanine to the surface of the magnetic graphene-based aerogel by virtue of amidation reaction so as to obtain the magnetic graphene-based aerogel material with the photocatalytic function. According to the invention, the material has an adsorption-degradation integrated effect and a physical magnetic separation function, can be widely applied to adsorption and degradation of a pollution system containing benzo alphapyrene (BaP), and has a potential application prospect.

Description

technical field [0001] The invention belongs to the technical field of environmental pollutant treatment, and in particular relates to a preparation method of photocatalytic functional magnetic graphene-based airgel Background technique [0002] At present, the environmental problems caused by air pollution have become a hot spot of concern. Carcinogen polycyclic aromatic hydrocarbons (Polcyclic aromatic hydrocarbons, PAHs) is the most noticeable hazard, more than 90% of carcinogenic PAHs exist in the particulate phase of PM2.5, benzoαpyrene (BaP) in PAHs has a wide range of sources and is difficult to degrade , strong carcinogenicity, is considered to be a class of environmental pollutants with great influence. At present, the methods for removing BaP in the environment include microbial degradation, photocatalytic degradation, and adsorption. Among them, the adsorption method has been widely concerned because of its low cost, simple operation, and strong versatility. It i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J13/00B01J31/18B01J23/745B01J21/18B01J20/20B01J20/28B01D53/86B01D53/72
CPCB01D53/8668B01D2257/7027B01D2258/06B01J13/0091B01J20/20B01J20/28009B01J20/28047B01J21/18B01J23/745B01J31/1825B01J35/0013B01J35/0033B01J35/004B01J2531/025B01J2531/842
Inventor 柴肖芳
Owner 柴肖芳
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