The synergistic effect of oxygen-containing functional groups on CO2 adsorption by the glucose-potassium citrate-derived activated carbon
A high surface area activated carbon prepared by an innovative approach using glucose as a carbon source and neutral potassium citrate (PC) as an activator was compared with the porous carbon from glucose using corrosive potassium hydroxide (KOH) as an activator. The PC method showed two notable adv...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
| Published: |
Royal Society of Chemistry
2018
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| Online Access: | http://hdl.handle.net/20.500.11937/74703 |
| _version_ | 1848763349394784256 |
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| author | Liu, B. Li, H. Ma, X. Chen, R. Wang, Shaobin Li, L. |
| author_facet | Liu, B. Li, H. Ma, X. Chen, R. Wang, Shaobin Li, L. |
| author_sort | Liu, B. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | A high surface area activated carbon prepared by an innovative approach using glucose as a carbon source and neutral potassium citrate (PC) as an activator was compared with the porous carbon from glucose using corrosive potassium hydroxide (KOH) as an activator. The PC method showed two notable advantages over KOH activation. The PC method not only significantly increased the yield of the activated carbon, particularly at high carbonization temperatures without sacrificing porosity, but also enhanced the oxygen content in the activated carbon. After investigating CO2 adsorption on these activated carbons, a remarkable uptake of 3.57 mmol g-1 at 25 °C at 1 bar was observed by the glucose-PC-derived carbon sample, which possessed the highest oxygen content. In addition, the glucose-PC-derived carbon samples exhibited higher CO2/N2 selectivity than the glucose-KOH derived samples. Coupled with the density functional theory (DFT) analysis that focused on the binding energy calculation, the doped oxygen-containing functional groups, such as carboxyl and hydroxyl groups, could effectively enhance the adsorption of CO2. |
| first_indexed | 2025-11-14T11:02:03Z |
| format | Journal Article |
| id | curtin-20.500.11937-74703 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T11:02:03Z |
| publishDate | 2018 |
| publisher | Royal Society of Chemistry |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-747032019-05-28T05:11:42Z The synergistic effect of oxygen-containing functional groups on CO2 adsorption by the glucose-potassium citrate-derived activated carbon Liu, B. Li, H. Ma, X. Chen, R. Wang, Shaobin Li, L. A high surface area activated carbon prepared by an innovative approach using glucose as a carbon source and neutral potassium citrate (PC) as an activator was compared with the porous carbon from glucose using corrosive potassium hydroxide (KOH) as an activator. The PC method showed two notable advantages over KOH activation. The PC method not only significantly increased the yield of the activated carbon, particularly at high carbonization temperatures without sacrificing porosity, but also enhanced the oxygen content in the activated carbon. After investigating CO2 adsorption on these activated carbons, a remarkable uptake of 3.57 mmol g-1 at 25 °C at 1 bar was observed by the glucose-PC-derived carbon sample, which possessed the highest oxygen content. In addition, the glucose-PC-derived carbon samples exhibited higher CO2/N2 selectivity than the glucose-KOH derived samples. Coupled with the density functional theory (DFT) analysis that focused on the binding energy calculation, the doped oxygen-containing functional groups, such as carboxyl and hydroxyl groups, could effectively enhance the adsorption of CO2. 2018 Journal Article http://hdl.handle.net/20.500.11937/74703 10.1039/c8ra05523h http://creativecommons.org/licenses/by-nc/3.0/ Royal Society of Chemistry fulltext |
| spellingShingle | Liu, B. Li, H. Ma, X. Chen, R. Wang, Shaobin Li, L. The synergistic effect of oxygen-containing functional groups on CO2 adsorption by the glucose-potassium citrate-derived activated carbon |
| title | The synergistic effect of oxygen-containing functional groups on CO2 adsorption by the glucose-potassium citrate-derived activated carbon |
| title_full | The synergistic effect of oxygen-containing functional groups on CO2 adsorption by the glucose-potassium citrate-derived activated carbon |
| title_fullStr | The synergistic effect of oxygen-containing functional groups on CO2 adsorption by the glucose-potassium citrate-derived activated carbon |
| title_full_unstemmed | The synergistic effect of oxygen-containing functional groups on CO2 adsorption by the glucose-potassium citrate-derived activated carbon |
| title_short | The synergistic effect of oxygen-containing functional groups on CO2 adsorption by the glucose-potassium citrate-derived activated carbon |
| title_sort | synergistic effect of oxygen-containing functional groups on co2 adsorption by the glucose-potassium citrate-derived activated carbon |
| url | http://hdl.handle.net/20.500.11937/74703 |