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Biomass Based N/O Codoped Porous Carbons with Abundant Ultramicropores for Highly Selective CO 2 Adsorption

Author

Listed:
  • Congxiu Guo

    (School of Electric Power, Civil Engineering and Architecture, Shanxi University, Taiyuan 030006, China)

  • Ya Sun

    (School of Electric Power, Civil Engineering and Architecture, Shanxi University, Taiyuan 030006, China)

  • Hongyan Ren

    (Jinzhong College of Information, Taigu 030800, China)

  • Bing Wang

    (School of Electric Power, Civil Engineering and Architecture, Shanxi University, Taiyuan 030006, China)

  • Xili Tong

    (State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China)

  • Xuhui Wang

    (School of Electric Power, Civil Engineering and Architecture, Shanxi University, Taiyuan 030006, China)

  • Yu Niu

    (School of Electric Power, Civil Engineering and Architecture, Shanxi University, Taiyuan 030006, China)

  • Jiao Wu

    (School of Electric Power, Civil Engineering and Architecture, Shanxi University, Taiyuan 030006, China)

Abstract

In this work, N/O codoped porous carbons (NOPCs) were derived from corn silk accompanied by Na 2 CO 3 activation. The porous structures and surface chemical features of as-prepared carbon materials were tailored by adjusting the Na 2 CO 3 mass ratio. After activation, the optimized sample (NOPC1) with abundant ultramicropores and pyrrolic N displays an enhanced CO 2 adsorption capacity of 3.15 mmol g −1 and 1.95 mmol g −1 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 2 /N 2 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 2 adsorption performance of NOPCs samples.

Suggested Citation

  • Congxiu Guo & Ya Sun & Hongyan Ren & Bing Wang & Xili Tong & Xuhui Wang & Yu Niu & Jiao Wu, 2023. "Biomass Based N/O Codoped Porous Carbons with Abundant Ultramicropores for Highly Selective CO 2 Adsorption," Energies, MDPI, vol. 16(13), pages 1-12, July.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:13:p:5222-:d:1188898
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    Cited by:

    1. Cheng Cao & Haonan Zhu & Zhengmeng Hou, 2024. "Advances in Carbon Capture, Utilization and Storage (CCUS)," Energies, MDPI, vol. 17(19), pages 1-3, September.

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