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Preparation method and application of magnetic hierarchical porous carbon material

A technology of multi-level pores and carbon materials, applied in chemical instruments and methods, other chemical processes, alkali metal oxides/hydroxides, etc., can solve the problems that single-pore structure carbon materials cannot meet high-performance applications, and achieve good Effect of magnetic separation performance and reproducibility, short process and stable performance

Inactive Publication Date: 2016-10-26
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in recent years, studies have found that carbon materials with a single pore structure cannot meet the needs of high-performance applications. Therefore, the development of hierarchical porous carbon materials has emerged as the times require.

Method used

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  • Preparation method and application of magnetic hierarchical porous carbon material
  • Preparation method and application of magnetic hierarchical porous carbon material
  • Preparation method and application of magnetic hierarchical porous carbon material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Fully grind 4.0g of ferric nitrate and 20g of tripotassium ethylenediaminetetraacetic acid salt, take 15g of sample and simultaneously carbonize and activate it in a tube furnace at a temperature of 750°C and a heating rate of 3°C min -1 , maintained for 1.0 h; the obtained product was washed several times with a mixture of ethanol and distilled water, vacuum filtered, washed with water until neutral, and dried to obtain a magnetic hierarchical porous carbon material.

[0027] The static adsorption experiment was completed; 10mL of chloramphenicol solutions of different concentrations were added to the centrifuge tube, and 2.0mg of magnetic hierarchical porous carbon materials were added thereto, and left standing in a constant temperature water bath. The pH value of the solution, the amount of adsorbent, The impact of contact time and temperature on the adsorption of chloramphenicol; after the adsorption reaches saturation, the supernatant is collected by filtration wit...

Embodiment 2

[0037]Fully grind 2.0g ferric nitrate and 20g dipotassium ethylenediaminetetraacetic acid salt, take 15g sample and carbonize and activate it synchronously in a tube furnace at a temperature of 800°C and a heating rate of 5°C min -1 , maintained for 1.0 h; the obtained product was washed several times with a mixture of ethanol and distilled water, vacuum filtered, washed with water until neutral, and dried to obtain a magnetic hierarchical porous carbon material. According to the steps of Example 1, the resulting equilibrium adsorption capacity is 407.7mg g -1 . At an initial concentration of 300mg L -1 , when the temperature is 298K, the adsorption equilibrium is reached in about 400min.

Embodiment 3

[0039] Fully grind 1.0g ferric nitrate and 20g tripotassium ethylenediaminetetraacetic acid salt, take 15g samples and carbonize and activate them synchronously in a tube furnace at a temperature of 850°C and a heating rate of 10°C min -1 , maintained for 2.0 h; the obtained product was washed several times with a mixture of ethanol and distilled water, vacuum filtered, washed with water until neutral, and dried to obtain a magnetic hierarchical porous carbon material. Operated according to the steps of Example 1, the resulting equilibrium adsorption capacity is 444.2mg g -1 . At an initial concentration of 300mg L -1 , when the temperature is 298K, the adsorption equilibrium is reached in about 350min.

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Abstract

The invention provides a preparation method and application of a magnetic hierarchical porous carbon material. The preparation method includes following steps: weighing ferric nitrate and EDTA metal potassium salt, placing the same in a mortar for mixing, and grinding well; putting a mixture into a tubular furnace; feeding inert gas, and calcining; after natural cooling, taking out a product in the tubular furnace; using alcohol / distilled water of 1:1 in volume ratio to wash the product, and drying to obtain the magnetic hierarchical porous carbon material. The magnetic hierarchical porous carbon material prepared by the method has large specific surface area, is high in adsorption capacity to antibiotics, is applied to environment sewage treatment and is high in adsorption rate, stable in performance and good in magnetic separation performance and renewability.

Description

technical field [0001] The invention belongs to the technical field of preparation of environmental functional materials, and specifically refers to a preparation method and application of a magnetic hierarchical porous carbon material. Background technique [0002] Chloramphenicol (Chloramphenicol, CAP) is an antibiotic produced by Streptomyces venezuela. It is used in the prevention and treatment of human and animal infectious diseases and as a growth promoter for animals. Antibiotics ingested in the body cannot be completely absorbed by organisms, and most of them are excreted in the original form or metabolites, and finally flow into the water body. However, in the aquaculture industry, they are directly put into the water body in the original form, and the problem of residues has become increasingly prominent. Today, CAP is frequently detected in the effluent of sewage treatment plants, surface water, and groundwater in many countries, including China. Because chloram...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/28B01J20/30C02F1/28C01B31/02
CPCB01J20/20B01J20/28009C01P2004/03C01P2004/04C01P2006/42C02F1/283
Inventor 田苏君戴江栋何劲松谢阿田孙骏常忠帅李春香闫永胜
Owner JIANGSU UNIV
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