A kind of preparation method of heterogeneous fenton catalyst fe3c/c composite material

A composite material and catalyst technology, which is applied in the field of preparation of heterogeneous Fenton-like catalyst Fe3C/C composite materials, can solve the problems of unfavorable large-scale use, secondary pollution, equipment corrosion, etc., and achieve low cost, low equipment requirements, The effect of short reaction times

Active Publication Date: 2020-11-27
ZAOZHUANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the traditional Fenton oxidation method has the following three disadvantages: (1) it needs to be carried out when the pH is less than 3, which will cause corrosion of the equipment; (2) the extensive use of iron ions requires a secondary recovery process; (3) in the final treatment The acidity needs to be adjusted back to produce a large amount of salt, causing secondary pollution
However, the synthesis of Fe / Fe in this patent document 3 The carbon source used by C / C is melamine or cyanamide, which are toxic or even carcinogenic substances, which are not conducive to large-scale use

Method used

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  • A kind of preparation method of heterogeneous fenton catalyst fe3c/c composite material
  • A kind of preparation method of heterogeneous fenton catalyst fe3c/c composite material
  • A kind of preparation method of heterogeneous fenton catalyst fe3c/c composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Example 1, Fe 3 Preparation of C / C composites

[0037] Add 1g of Enteromorpha powder and 9mmol of potassium ferrate into a 100mL beaker, add 90mL of deionized water and stir evenly, place in a water bath at 80°C, stir and heat until dried to obtain the precursor powder. The precursor powder was heated to 800° C. and calcined for 2 hours in an Ar atmosphere to obtain a black powder. Transfer it to 80 mL of 1 mol / L hydrochloric acid solution, stir and wash it, wash it with deionized water until it is neutral, and dry it to obtain the final product.

[0038] The product adopts Bruker D8ADVANCE X-ray powder diffractometer to carry out phase analysis with Cu Kα ray (wavelength scanning step speed is 0.08 ° / second), the result is as follows figure 1 shown by figure 1 It can be seen that the final product is pure phase Fe 3 C / C complexes can be used as Fenton-like catalysts, figure 2 SEM photograph of the final product.

Embodiment 2

[0039] Example 2, Fe3 Preparation of C / C composites

[0040] Add 1.2g of soybean hull powder and 9mmol of sodium ferrate into a 100mL beaker, add 90mL of deionized water and stir evenly, place in a 90°C water bath, stir and heat until dried to obtain the precursor powder. The precursor powder was heated to 700° C. and calcined for 3 hours in a nitrogen atmosphere to obtain a black powder. Transfer it to 100 mL of 0.6 mol / L hydrochloric acid solution for stirring and washing, wash with deionized water until neutral, and dry to obtain the final product.

[0041] The product was subjected to phase analysis with Cu Kα rays (wavelength scan step speed of 0.08° / sec) using a Bruker D8ADVANCE X-ray powder diffractometer, and the results showed that it was a pure phase of Fe 3 C / C complexes can be used as Fenton-like reagents.

Embodiment 3

[0042] Example 3, Fe 3 Preparation of C / C composites

[0043] Add 1.5g of bamboo leaf powder and 9mmol of potassium ferrate into a 100mL beaker, add 90mL of deionized water and stir evenly, place in an 80°C water bath, stir and heat until dried to obtain the precursor powder. The precursor powder was heated to 750° C. and calcined for 2 hours in a nitrogen atmosphere to obtain a black powder. Transfer it to 150 mL of 0.2 mol / L hydrochloric acid solution for stirring and washing, wash with deionized water until neutral, and dry to obtain the final product.

[0044] The product was subjected to phase analysis with Cu Kα rays (wavelength scan step speed of 0.08° / sec) using a Bruker D8ADVANCE X-ray powder diffractometer, and the results showed that it was a pure phase of Fe 3 C / C complexes can be used as Fenton-like reagents.

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Abstract

The invention relates to a preparation method of a heterogeneous Fenton catalyst Fe3C / C composite material. The preparation method includes the steps: mixing biomass waste powder and an iron source, adding water, uniformly stirring the biomass waste powder, the iron source and the water, heating mixture in 80-100 DEG C water bath under continuous stirring, and drying the mixture by distillation toobtain a solid powder precursor; gradually heating the powder precursor in inert atmosphere to reach the temperature of 450-800 DEG C, and calcining the powder precursor for 1-5 hours to obtain blackpowder; adding the black powder into hydrochloric acid solution, stirring and washing the black powder and the hydrochloric acid solution, washing the black powder and the hydrochloric acid solutionto be neutral by deionized water, and drying the black powder and the hydrochloric acid solution to obtain the heterogeneous Fenton catalyst Fe3C / C composite material. The heterogeneous Fenton catalyst Fe3C / C composite material is applied to methylene blue degradation, and high degradation rate can be obtained. Used raw materials are simple, easy to obtain, low in price and low in time and energyconsumption and requirement on equipment, and can be produced on a large scale at low cost. In-situ carbon load can be realized, waste is treated by waste, and the material is efficient and environmentally friendly.

Description

technical field [0001] The invention relates to a heterogeneous Fenton-like catalyst Fe 3 A preparation method of a C / C composite material belongs to the technical field of catalysts. Background technique [0002] In recent years, dyes have been produced and used in large quantities in industries such as textiles, food, paper, printing, leather, and cosmetics (for example: there are more than 100,000 commercial dyes in the world, with an annual output of more than 700,000 tons). However, the toxicity and potential carcinogenic properties of the dye itself have constituted a serious threat to human health and the environment. Therefore, it is very important to adopt effective means to remove dye pollutants in industrial wastewater. As one of the advanced oxidation methods, the traditional Fenton reagent is currently the most widely used catalyst, which mainly uses ferrous ions to catalyze hydrogen peroxide to generate highly active hydroxyl radicals to treat refractory orga...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/22C02F1/72C02F101/30C02F101/38
CPCB01J27/22C02F1/722C02F1/725C02F2101/308C02F2101/40C02F2305/026
Inventor 李爱华王峰黄薇
Owner ZAOZHUANG UNIV
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