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http://dx.doi.org/10.5572/KOSAE.2017.33.1.001

Preparation of Activated Carbon Fiber Adsorbent for Low Level CO2  

Kim, Dong Woo (Department of Environmental Science and Engineering, Kyung Hee University)
Jung, Dong Won (Department of Environmental Science and Engineering, Kyung Hee University)
Jo, Young Min (Department of Environmental Science and Engineering, Kyung Hee University)
Publication Information
Journal of Korean Society for Atmospheric Environment / v.33, no.1, 2017 , pp. 1-10 More about this Journal
Abstract
Adsorption is a plausible technology using solid adsorbents for dry capture of carbon dioxide ($CO_2$). In general, narrow size distribution of tiny pores and surface chemical functionalities of solid adsorbents enhance the adsorption capacity of gaseous $CO_2$ molecules. In order to utilize the advantages of fibrous adsorbents, this work prepared activated carbon nanofibers (ACNFs) via the electrospinning process using a polymer precursor of polyacylonitrile (PAN). The spun fibers were 390 nm to 580 nm in thickness with an average surface area of $27.3m^2/g$. The surface structure was improved by a programmed thermal activation at $800^{\circ}C$ in $CO_2$ atmosphere. It was also found that the nitrogen-groups including pyrrole and pyridine were created during the activation facilitaing the selective adsorption as forming enhanced active sites. The finally obtained adsorption capacities were 2.74 mmol/g for pure $CO_2$ flow and 0.74mmol/g for 3000 ppm.
Keywords
Electrospinning; Nanofiber; ACF; Carbon dioxide; Adsorption;
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Times Cited By KSCI : 5  (Citation Analysis)
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