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A functionalized magnetic graphene oxide catalyst material containing hydroxylamine compounds and its preparation method and application

A technology of graphene catalytic materials and compounds, applied in metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, physical/chemical process catalysts, etc. Low material bonding, complex preparation process, easy to fall off and other problems, to achieve the effect of reducing loss and consumption, high catalytic activity, and avoiding falling off

Active Publication Date: 2019-07-09
杭州蓝锋尚能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the preparation process of the existing graphene oxide ferroferric oxide composite materials is mostly complicated, and the degree of bonding between the prepared ferric oxide particles and the graphene oxide composite material is not high, and the ferric oxide particles in the loading structure are large. The part is still in a bare state, on the one hand, it is easy to fall off, and on the other hand, it is easy to be consumed by the Fenton reaction process

Method used

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  • A functionalized magnetic graphene oxide catalyst material containing hydroxylamine compounds and its preparation method and application
  • A functionalized magnetic graphene oxide catalyst material containing hydroxylamine compounds and its preparation method and application
  • A functionalized magnetic graphene oxide catalyst material containing hydroxylamine compounds and its preparation method and application

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Effect test

Embodiment 1

[0039] The preparation method of graphene oxide is as follows:

[0040] (1) Measure 23mL of concentrated sulfuric acid (98%), pour it into a three-necked flask and then ice-bath it to lower its temperature below 4°C. Subsequently, 1 g of graphite powder and 0.5 g of sodium nitrate were weighed. After it is dispersed in concentrated sulfuric acid, slowly add 3g of potassium permanganate into the mixed solution within 1h, and control the reaction temperature during the addition process not to exceed 10°C; after the addition of potassium permanganate is completed, react below 10°C for 1h.

[0041] (2) The temperature of the mixed solution obtained from the above reaction was raised to 38° C., and allowed to react with stirring at 38° C. for 0.5 h. Subsequently, 80 mL of distilled water was slowly added to the mixed solution. And slowly raise the temperature to 95°C, and keep stirring for 30min. Afterwards, 60 mL of deionized water was added to the mixed solution to stop the re...

Embodiment 2

[0044] The preparation method of the magnetic graphene oxide catalytic material of triethanolamine functionalization is as follows:

[0045] (1) Add 10 g of 98% triethanolamine into 20 mL of distilled water, and stir at room temperature for 30 min.

[0046] (2) 0.3g FeCl 3 ·6H 2 O was added to the above solution and stirred at 25 °C for 30 min.

[0047] (3) Add 15 mL (concentration of about 6 mg / mL) graphene oxide suspension into the solution prepared in step (2), and stir at 25° C. for 30 min.

[0048] (4) Add the stirred reaction precursor into a polytetrafluoroethylene-lined reactor, set the heating rate of the reactor so that the temperature of the solution in the reactor rises to 200°C within 200 minutes, and Insulation reaction 6h.

[0049] (5) After the reaction is completed, after the temperature of the reactor is cooled to room temperature, it is washed to neutrality with an aqueous solution, and the magnetic graphene oxide catalytic material (A) modified by triet...

Embodiment 3

[0054] Catalytic degradation performance of ferroferric oxide nanoparticles and triethanolamine functionalized magnetic graphene oxide catalytic material for methylene blue:

[0055] Preparation 50mL concentration is 100mg / L, and pH is the solution of the methylene blue of 4.0, wherein the concentration of hydrogen peroxide is 10mmol / L, adds the magnetic graphene oxide catalytic material of ferric oxide nano-particle and triethanolamine functionalization of 10mg respectively, React at 80°C for 35 minutes. The experimental results are as Figure 4 shown by Figure 4 It can be seen that the triethanolamine functionalized magnetic graphene oxide material (A) has a degradation rate of more than 98% for methylene blue in 5 minutes, and its degradation rate is much higher than that of ferric oxide nanoparticles. This shows that the triethanolamine-functionalized magnetic graphene oxide can effectively solve the problem of agglomeration of iron ferric oxide nanoparticles, and the l...

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Abstract

The invention discloses a hydroxylamine compound-containing functionalized magnetic graphene oxide catalytic material and its preparation method and application. The catalytic material uses hydroxylamine-containing compounds, graphene oxide and trivalent iron salts as raw materials, and is heated through hydrothermal treatment. reaction, achieving a one-step synthesis; the ferric oxide nanoparticles in the prepared catalytic material are firmly anchored on the graphene oxide surface by hydroxylamine-containing compounds, effectively solving the uneven dispersion and poor stability of ferric oxide. and other problems, avoiding the agglomeration and loss of trioxide particles during the application process; in addition, ferric oxide is closely combined with graphene oxide and hydroxylamine-containing compounds, making the transfer of pollutants and electrons faster, greatly improving It improves the Fenton catalytic degradation performance of the composite material. The preparation method of the catalytic material has simple process, mild conditions, and no waste emissions. It is safe and environmentally friendly, and is more suitable for large-scale industrial production and application.

Description

technical field [0001] The invention relates to a Fenton catalyst, in particular to a functionalized magnetic graphene oxide catalytic material containing hydroxylamine compounds, a preparation method thereof and a functionalized magnetic graphene oxide catalytic material containing hydroxylamine compounds as a Fenton catalyst in The application in treating organic matter in water belongs to the technical field of organic wastewater treatment. Background technique [0002] With the rapid development of cities and industries, global water pollution is increasing day by day. There are many kinds of organic pollutants in water bodies and they are very harmful. Simple physical treatment methods cannot completely degrade or transform pollutants, so Fenton oxidation technology has gradually become a hot spot of concern. The combination of ferrous salt and hydrogen peroxide becomes Fenton's reagent, Fe 2+ and H 2 o 2 The reaction generates hydroxyl radicals with high oxidation...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/745B01J21/18C02F1/72C02F101/30
CPCC02F1/725B01J21/18B01J23/745C02F2101/308B01J35/33
Inventor 曹占芳温欣钟宏王帅刘广义
Owner 杭州蓝锋尚能源科技有限公司
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