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Biomass porous carbon material with high specific surface area as well as preparation method and application thereof

A porous carbon material, high specific surface area technology, applied in chemical instruments and methods, carbon compounds, inorganic chemistry, etc., to shorten the transmission distance, promote the increase of pore structure, and shorten the process.

Pending Publication Date: 2021-07-23
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These three articles are all studies on the removal of chloramphenicol by using porous carbon materials prepared from biomass as carbon source, but using a large amount of available sodium lignosulfonate as carbon source and introducing N dopants to prepare the chloramphenicol by one-step method. Porous carbon materials with high adsorption capacity and regenerative properties of chloramphenicol have not been reported

Method used

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  • Biomass porous carbon material with high specific surface area as well as preparation method and application thereof
  • Biomass porous carbon material with high specific surface area as well as preparation method and application thereof
  • Biomass porous carbon material with high specific surface area as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0041] In this example, under the heating conditions protected by an inert atmosphere, sodium lignosulfonate is used as a carbon precursor, anhydrous potassium carbonate is used as an activator, and a lignin-based porous carbon material is prepared with N dopant urea, including the following steps:

[0042] Step 1, placing the dried sodium lignosulfonate, anhydrous potassium carbonate and N dopant urea in an agate mortar according to the mass ratio of 1:4:0.4, mixing and grinding evenly to obtain a mixed powder;

[0043] Step 2. Put the mixed powder obtained in Step 1 into a corundum porcelain boat, place it in an argon-protected tube furnace, raise the temperature from room temperature to 750°C at a rate of 5°C / min and keep it warm for 1h, then cool naturally to Obtain carbonization product at room temperature;

[0044] Step 3: The carbonized product obtained in Step 2 is repeatedly washed with 0.2 mol / L dilute hydrochloric acid solution and deionized water until neutral, and...

Embodiment 2

[0047] In this example, under the heating conditions protected by an inert atmosphere, sodium lignosulfonate is used as a carbon precursor, anhydrous potassium carbonate is used as an activator, and a lignin-based porous carbon material is prepared with the N dopant dicyandiamide, including The following steps:

[0048] Step 1, placing the dried sodium lignosulfonate, anhydrous potassium carbonate and N dopant dicyandiamide in an agate mortar according to the mass ratio of 1:4:0.6, mixing and grinding evenly to obtain a mixed powder;

[0049] Step 2. Put the mixed powder obtained in step 1 into a corundum porcelain boat, and place it in a nitrogen-protected tube furnace, raise the temperature from room temperature to 850 °C at a rate of 5 °C / min and keep it warm for 3 hours, and then naturally cool to room temperature get carbonized products;

[0050] Step 3: The carbonized product obtained in Step 2 is repeatedly washed with 0.2 mol / L dilute hydrochloric acid solution and de...

Embodiment 3

[0053] In this example, under the heating conditions protected by an inert atmosphere, sodium lignosulfonate is used as a carbon precursor, anhydrous potassium carbonate is used as an activator, and a lignin-based porous carbon material is prepared with N dopant melamine, including the following steps:

[0054] Step 1, placing the dried sodium lignosulfonate, anhydrous potassium carbonate and N dopant melamine in an agate mortar according to the mass ratio of 1:4:0.5, mixing and grinding evenly to obtain a mixed powder;

[0055] Step 2. Put the mixed powder obtained in Step 1 into a corundum porcelain boat, place it in a tube furnace protected by nitrogen and argon, raise the temperature from room temperature to 800°C at a rate of 5°C / min and keep it warm for 2 hours. Cool to room temperature to obtain carbonized product;

[0056] Step 3: The carbonized product obtained in Step 2 is repeatedly washed with 0.2 mol / L dilute hydrochloric acid solution and deionized water until ne...

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Abstract

The invention discloses a preparation method of a biomass porous carbon material with a high specific surface area, and the method comprises the following steps: under the heating condition of inert atmosphere protection, preparing the biomass porous carbon material by taking sodium lignin sulfonate as a carbon precursor, taking anhydrous potassium carbonate as an activating agent and mixing with an N doping agent. The invention further discloses the biomass porous carbon material with the high specific surface area and application of the biomass porous carbon material to removal of chloramphenicol in a water body. Sodium lignin sulfonate which is low in cost, easy to obtain and stable in source is used as a raw material, the activating agent reacts with carbon to promote formation of pores, the N doping agent participates in the pore forming process, pore enlargement and pore structure increase in the carbon material are promoted, the specific surface area and the pore structure of the biomass porous carbon material are improved, and the adsorption quantity of pollutants is favorably improved; the preparation method is simple, high in efficiency, low in raw material cost and easy to popularize; the biomass porous carbon material disclosed by the invention has an excellent adsorption effect on chloramphenicol in a water body and is stable in adsorption performance.

Description

technical field [0001] The invention belongs to the technical field of preparation of environmental functional materials, and in particular relates to a biomass porous carbon material with high specific surface area and its preparation method and application. Background technique [0002] Chloramphenicol is an antibiotic that has inhibitory effects on Gram-positive bacteria and Gram-negative bacteria, anaerobic Bacteroides, Rickettsia, Chlamydia and mycoplasma. Since it was successfully isolated in 1947 , with its low price, wide antibacterial spectrum, easy preservation and other advantages, it is widely used in livestock industry, aquaculture industry, medicine, cosmetics and so on. But chloramphenicol can cause aplastic anemia, skin rash, drug fever, angioedema, exfoliative dermatitis and other diseases. At present, there are more and more reports that chloramphenicol has been detected in water bodies around the world, and the problem of how to effectively control its co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/318C01B32/348
CPCC01B32/318C01B32/348
Inventor 陈爱侠庞家驹卫潇胡蕊蕊张奕轩吕露雪雷婵娟
Owner CHANGAN UNIV
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