Biomass Based N/O Codoped Porous Carbons with Abundant Ultramicropores for Highly Selective CO<sub>2</sub> Adsorption
In this work, N/O codoped porous carbons (NOPCs) were derived from corn silk accompanied by Na<sub>2</sub>CO<sub>3</sub> activation. The porous structures and surface chemical features of as-prepared carbon materials were tailored by adjusting the Na<sub>2</sub>CO...
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MDPI AG
2023-07-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/16/13/5222 |
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| author | Congxiu Guo Ya Sun Hongyan Ren Bing Wang Xili Tong Xuhui Wang Yu Niu Jiao Wu |
| author_facet | Congxiu Guo Ya Sun Hongyan Ren Bing Wang Xili Tong Xuhui Wang Yu Niu Jiao Wu |
| author_sort | Congxiu Guo |
| collection | DOAJ |
| description | In this work, N/O codoped porous carbons (NOPCs) were derived from corn silk accompanied by Na<sub>2</sub>CO<sub>3</sub> activation. The porous structures and surface chemical features of as-prepared carbon materials were tailored by adjusting the Na<sub>2</sub>CO<sub>3</sub> mass ratio. After activation, the optimized sample (NOPC1) with abundant ultramicropores and pyrrolic N displays an enhanced CO<sub>2</sub> adsorption capacity of 3.15 mmol g<sup>−1</sup> and 1.95 mmol g<sup>−1</sup> at 273 K and 298 K at 1 bar, respectively. Moreover, this sample also exhibited high IAST selectivity (16.9) and Henry’s law selectivity (15.6) for CO<sub>2</sub>/N<sub>2</sub> at 298 K as well as moderate heat adsorption. Significantly, the joint effect between ultramicropore structure and pyrrolic N content was found to govern the CO<sub>2</sub> adsorption performance of NOPCs samples. |
| first_indexed | 2024-03-11T01:42:22Z |
| format | Article |
| id | doaj.art-c8cf3336f4b8497aa517ccb00a9ac790 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-11T01:42:22Z |
| publishDate | 2023-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-c8cf3336f4b8497aa517ccb00a9ac7902023-11-18T16:32:12ZengMDPI AGEnergies1996-10732023-07-011613522210.3390/en16135222Biomass Based N/O Codoped Porous Carbons with Abundant Ultramicropores for Highly Selective CO<sub>2</sub> AdsorptionCongxiu Guo0Ya Sun1Hongyan Ren2Bing Wang3Xili Tong4Xuhui Wang5Yu Niu6Jiao Wu7School of Electric Power, Civil Engineering and Architecture, Shanxi University, Taiyuan 030006, ChinaSchool of Electric Power, Civil Engineering and Architecture, Shanxi University, Taiyuan 030006, ChinaJinzhong College of Information, Taigu 030800, ChinaSchool of Electric Power, Civil Engineering and Architecture, Shanxi University, Taiyuan 030006, ChinaState Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, ChinaSchool of Electric Power, Civil Engineering and Architecture, Shanxi University, Taiyuan 030006, ChinaSchool of Electric Power, Civil Engineering and Architecture, Shanxi University, Taiyuan 030006, ChinaSchool of Electric Power, Civil Engineering and Architecture, Shanxi University, Taiyuan 030006, ChinaIn this work, N/O codoped porous carbons (NOPCs) were derived from corn silk accompanied by Na<sub>2</sub>CO<sub>3</sub> activation. The porous structures and surface chemical features of as-prepared carbon materials were tailored by adjusting the Na<sub>2</sub>CO<sub>3</sub> mass ratio. After activation, the optimized sample (NOPC1) with abundant ultramicropores and pyrrolic N displays an enhanced CO<sub>2</sub> adsorption capacity of 3.15 mmol g<sup>−1</sup> and 1.95 mmol g<sup>−1</sup> at 273 K and 298 K at 1 bar, respectively. Moreover, this sample also exhibited high IAST selectivity (16.9) and Henry’s law selectivity (15.6) for CO<sub>2</sub>/N<sub>2</sub> at 298 K as well as moderate heat adsorption. Significantly, the joint effect between ultramicropore structure and pyrrolic N content was found to govern the CO<sub>2</sub> adsorption performance of NOPCs samples.https://www.mdpi.com/1996-1073/16/13/5222biomasscorn silkultramicroporenitrogen and oxygen co-dopingCO<sub>2</sub> adsorption |
| spellingShingle | Congxiu Guo Ya Sun Hongyan Ren Bing Wang Xili Tong Xuhui Wang Yu Niu Jiao Wu Biomass Based N/O Codoped Porous Carbons with Abundant Ultramicropores for Highly Selective CO<sub>2</sub> Adsorption Energies biomass corn silk ultramicropore nitrogen and oxygen co-doping CO<sub>2</sub> adsorption |
| title | Biomass Based N/O Codoped Porous Carbons with Abundant Ultramicropores for Highly Selective CO<sub>2</sub> Adsorption |
| title_full | Biomass Based N/O Codoped Porous Carbons with Abundant Ultramicropores for Highly Selective CO<sub>2</sub> Adsorption |
| title_fullStr | Biomass Based N/O Codoped Porous Carbons with Abundant Ultramicropores for Highly Selective CO<sub>2</sub> Adsorption |
| title_full_unstemmed | Biomass Based N/O Codoped Porous Carbons with Abundant Ultramicropores for Highly Selective CO<sub>2</sub> Adsorption |
| title_short | Biomass Based N/O Codoped Porous Carbons with Abundant Ultramicropores for Highly Selective CO<sub>2</sub> Adsorption |
| title_sort | biomass based n o codoped porous carbons with abundant ultramicropores for highly selective co sub 2 sub adsorption |
| topic | biomass corn silk ultramicropore nitrogen and oxygen co-doping CO<sub>2</sub> adsorption |
| url | https://www.mdpi.com/1996-1073/16/13/5222 |
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