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Data-driven analysis of carbon capture technology using carbon-based sorbents |
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| รหัสดีโอไอ | |
| Title | Data-driven analysis of carbon capture technology using carbon-based sorbents |
| Creator | Permjit Asawarungruengchai |
| Contributor | Khanin Nueangnoraj, Advisor |
| Publisher | Thammasat University |
| Publication Year | 2568 |
| Keyword | CO2 adsorption, Nitrogen doping, Structural properties, Carbon-based adsorbents, Data-driven analysis, Statistical analysis |
| Abstract | The increasing concentration of atmospheric carbon dioxide (CO2) necessitates the development of efficient carbon capture technologies. Carbon-based adsorbents have attracted considerable attention due to their high surface area, tunable porosity, and chemical stability. Although nitrogen doping is widely reported to enhance CO2 adsorption, its relative contribution compared with structural properties remains unclear. This study systematically evaluates the roles of structural parameters and nitrogen content in CO2 adsorption using a data-driven approach. A dataset comprising 1,215 experimental data points from 100 published studies was compiled, covering nitrogen-doped and undoped carbon materials at 273 K and 298 K. Pearson correlation analysis, multiple linear regression (MLR), mediation analysis (MA), and interpolation were applied to quantify the relationships among nitrogen doping, structural properties, and CO2 adsorption capacity. The results of multiple linear regression (MLR) demonstrate that structural properties, particularly narrow micropore volume (NMV) and surface area (SA), are the dominant predictors of adsorption capacity at both temperatures. Nitrogen content does not show a strong independent positive effect when structural parameters are considered. Mediation analysis further confirms that nitrogen primarily influences adsorption indirectly through structural modifications rather than direct chemical interactions. The mediated proportions through narrow micropore volume (NMV) are 75.1% at both temperatures, while the mediated proportions through surface area (SA) are 75.1% and 52.8% at 273 K and 298 K, respectively. A comparative evaluation of nitrogen-doped and undoped carbons supports these findings, showing consistent positive correlations between surface area and CO2 adsorption capacity regardless of nitrogen incorporation. These findings clarify the structure–property relationship in carbon-based CO2 adsorbents and highlight that optimizing microporosity and preserving surface area are more critical than maximizing nitrogen content for rational adsorbent design. |
