Preparation method of N-doped hierarchical pore carbon material with shrimp shells as carbon sources

Abstract

The invention relates to a preparation method of an N-doped hierarchical pore carbon material with shrimp shells as carbon sources and belongs to the technical field of environment function material preparation. The preparation method is characterized in that the non-toxic and cheap shrimp shells serve as the carbon sources, under the protection effect of nitrogen, an N-doped hierarchical pore biomass carbon material is obtained through high-temperature calcination, treatment through diluted hydrochloric acid, repeated washing through a mixed solution of ethyl alcohol and distilled water and drying to constant weight, the N-doped hierarchical pore biomass carbon material is mixed with potassium hydroxide at different ratios, the mixture is calcined under the protective effect of nitrogen, treated through hot distilled water, and treated through diluted hydrochloric acid so that impurities such as potassium carbonate generated in the reaction process can be removed, impurities repeatedly flushed through distilled water, and filtered and dried to constant weight, and the N-doped hierarchical pore carbon material is obtained. The preparation method is successfully applied to removal of sulfamethazine and chloramphenicol in the water environment, and the N-doped hierarchical pore carbon material has excellent regeneration performance.

Description

technical field [0001] The invention relates to a preparation method of an N-doped hierarchical porous carbon material using shrimp shells as a carbon source, and belongs to the field of preparation of environmental functional materials. Background technique [0002] Antibiotics rank third in the amount of medical drugs used by humans, accounting for more than 6% of the total prescription drugs, and occupy an even more important position in the amount of drugs used in animal husbandry and aquaculture; both sulfamethazine and chloramphenicol have inhibitory effects. It is an antibiotic used to prevent and treat bacterial infectious diseases, so it is widely used in the prevention and treatment of human and animal diseases. However, most antibiotics cannot be completely absorbed by the body, and up to 85% The above antibiotics will be excreted into the environment in the form of prototypes or metabolites through the excrement and urine of patients and animals, causing pollutio...

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Problems solved by technology

[0002] Antibiotics rank third in the amount of human medical drugs used, accounting for more than 6% of the total prescription drugs, and occupy an important position in the amount of drugs used in animal husbandry and aquaculture; both sulfamethazine and chloramphenicol have inhibitory effects. It is an antibiotic used to prevent and treat bacterial infectious diseases, so it is widely used in the prevention and treatment of human and animal diseases. However, most antibiotics cannot be completely absorbed by the body, and up to 85% The above antibiotics will be excreted into the environment in the form of prototypes or metabolites through the excrement and urine of patients and animals, causing pollution to soil and water through different channels; the distribution, migration and stability of antibiotics in the environment have a negative impact on the environmental ecosystem including bacteria, Aquatic organisms, soil organisms and plants are harmful and endanger human health; domestic and foreign scholars have confirmed the presence of chloramphenicol and sulfonamide antibiotic residues in the soil and water environment. Therefore, it is necessary to establish and develop effective and economical treatment methods to It is urgent to remove the residues of chloramphenicol and sulfa antibiotics in the water environment

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