Porous carbon nano fiber material for adsorbing carbon dioxide and preparation method thereof

Abstract

The invention discloses a porous carbon nano fiber material for adsorbing carbon dioxide (CO2) and a preparation method thereof, and belongs to the field of nano materials and environmental treatment. The preparation method comprises the following steps of screening a carbon precursor and an organic pore-forming agent by thermogravimetry; compounding a spinning solution; obtaining a composite nano fiber film by an electrostatic spinning method; obtaining the porous carbon nano fiber material with an ultrahigh specific surface area through low-temperature preoxidation and high-temperature carbonization treatment. By using the method, the activation step in the conventional preparation of a carbon material can be avoided; the cost is low; the preparation process is simple; the pore structure for regulating and controlling the porous carbon nano fiber material can be selectively obtained. The invention provides a high-efficiency carbon dioxide adsorbent. The porous carbon nano fiber material has the ultrahigh specific surface area and ultrahigh porosity, has plentiful micropores and ultramicropores, is extremely beneficial to the adsorption of the carbon dioxide, and is enabled to be high in the adsorption capacity of the carbon dioxide; meanwhile, the material has advantages that the desorption condition is mild, the material can be repeatedly utilized, and the like, and is enabled to have favorable application prospect and environmental-treatment benefit in the field of the capture of the carbon dioxide.

Description

technical field

[0001] The invention discloses a porous carbon nanofiber material for carbon dioxide adsorption and a preparation method thereof, belonging to the field of nanomaterials and environmental treatment. Background technique

[0002] In recent years, the greenhouse effect has been a hot issue in the environmental field, mainly caused by the enrichment of greenhouse gases in the atmosphere. Carbon dioxide is an important component of greenhouse gases. With the increasing frequency of human economic activities and the massive consumption of fossil fuels, the concentration of carbon dioxide in the atmosphere is increasing year by year; the impact of the greenhouse effect on the global climate is becoming more and more serious, resulting in global warming, extreme Climate anomalies such as occur from time to time; therefore, the reduction of carbon dioxide emissions and the capture of carbon dioxide are extremely important.

[0003] As a commonly used solid adsorbent...

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