Efficient CO2 capture by porous, nitrogen-doped carbonaceous adsorbents derived from task-specific ionic liquids

Xiang Zhu, Patrick C. Hillesheim, Shannon M. Mahurin, Congmin Wang, Chengcheng Tian, Suree Brown, Huimin Luo, Gabriel M. Veith, Kee Sung Han, Edward W. Hagaman, Honglai Liu, Sheng Dai

Research output: Contribution to journalArticlepeer-review

99 Scopus citations

Abstract

The search for a better carbon dioxide (CO2) capture material is attracting significant attention because of an increase in anthropogenic emissions. Porous materials are considered to be among the most promising candidates. A series of porous, nitrogen-doped carbons for CO2 capture have been developed by using high-yield carbonization reactions from task-specific ionic liquid (TSIL) precursors. Owing to strong interactions between the CO2 molecules and nitrogen-containing basic sites within the carbon framework, the porous nitrogen-doped compound derived from the carbonization of a TSIL at 500 °C, CN500, exhibits an exceptional CO 2 absorption capacity of 193 mg of CO2 per g sorbent (4.39 mmol g-1 at 0 °C and 1 bar), which demonstrates a significantly higher capacity than previously reported adsorbents. The application of TSILs as precursors for porous materials provides a new avenue for the development of improved materials for carbon capture. The art of capturing CO2: A series of porous, nitrogen-doped carbons for CO2 capture have been developed from task-specific ionic liquid (TSIL) precursors by using high-yield carbonization reactions. The porous, nitrogen-doped compound derived from the carbonization of a TSIL exhibits an exceptional CO2 absorption capacity (at 0 °C and 1 bar) because of strong interactions between the CO2 molecules and nitrogen-containing basic sites within the carbon framework.

Original languageEnglish
Pages (from-to)1912-1917
Number of pages6
JournalChemSusChem
Volume5
Issue number10
DOIs
StatePublished - Oct 2012

Keywords

  • adsorption
  • carbon
  • carbon dioxide fixation
  • ionic liquids
  • nitrogen

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