Biomass-based nitrogen-doped porous carbon material, and preparation method and application thereof

Abstract

The invention provides a preparation method of biomass-based nitrogen-containing porous carbon with the advantages that simplicity is realized; the implementation is easy; the cost is low. According to the method, the in-situ doping of nitrogen atoms in the carbon material preparation process is realized by a one-step foaming method; cheap and reproducible protein-rich plants are used as carbon precursors; the in-situ doping of nitrogen atoms in the carbon material preparation process is favorably realized, so that the doping content is controllable, and the distribution is uniform. All raw materials are renewable resources; green and environment-friendly effects are achieved; simplicity is realized; the obtaining is easy; the resources are rich; the cost is low. Meanwhile, the method provided by the invention has the advantages that the nitrogen-doped porous carbon material with the large specific surface area can be obtained without complicated multistep operation; the preparation process is simple; the use of high-pollution chemical reagents such as ZnC12, strong base and strong acid is avoided; the environment-friendly effect is achieved; the operation is convenient; equipment cannot be corroded in the production and use processes; the method is suitable for large-scale production.

Description

technical field [0001] The invention belongs to the field of inorganic nanometer materials, and relates to a nitrogen-doped porous carbon material for carbon dioxide adsorption based on biomass raw materials and a preparation method thereof. Background technique [0002] In recent years, as the emission of carbon dioxide has increased year by year, the excessive emission of carbon dioxide has caused the imbalance of carbon content in the regional ecological environment system and caused global warming. The "greenhouse effect" has become one of the most concerned environmental issues in the world today. In order to reduce and control the "greenhouse effect" and improve the effective utilization rate of carbon dioxide, the capture and utilization of carbon dioxide at room temperature has become an important strategic direction in the field of environment and energy in my country. Therefore, it is of great significance to prepare carbon dioxide adsorption recovery materials th...

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Problems solved by technology

The carbon materials obtained by the late nitriding method have problems such as low nitrogen content and uneven distribution; the following problems generally exist in the nano-casting method, template method or solvent evaporation-induced self-assembly method: (1) Most of them are multi-step reactions, and the operation The steps are cumbersome; (2) high-purity or highly toxic chemical reagents are required, and the cost of raw materials is high; (3) the reaction conditions are harsh; (4) the pore structure of the obtained carbon material is not developed enough and the thermal stability is poor

These methods have certain limitations in large-scale industrial production and application.

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