title: Directed synthesis of nanoporous carbons from task-specific ionic liquid precursors for the adsorption of CO2.
abstract: Postcombustion CO2 capture has become a key component of greenhouse-gas reduction as anthropogenic emissions continue to impact the environment. We report a one-step synthesis of porous carbon materials using a series of task-specific ionic liquids for the adsorption of CO2 . By varying the structure of the ionic liquid precursor, we were able to control pore architecture and surface functional groups of the carbon materials in this one-step synthesis process leading to adsorbents with high CO2 sorption capacities (up to 4.067 mmol g(-1) ) at 0 °C and 1 bar. Added nitrogen functional groups led to high CO2 /N2 adsorption-selectivity values ranging from 20 to 37 whereas simultaneously the interaction energy was enhanced relative to carbon materials with no added nitrogen.
authors.affiliation: Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831 (USA). mahurinsm@ornl.gov.
authors.forename: Shannon M
authors.initials: SM
authors.lastname: Mahurin
authors.forename: Pasquale F
authors.initials: PF
authors.lastname: Fulvio
authors.forename: Patrick C
authors.initials: PC
authors.lastname: Hillesheim
authors.forename: Kimberly M
authors.initials: KM
authors.lastname: Nelson
authors.forename: Gabriel M
authors.initials: GM
authors.lastname: Veith
authors.forename: Sheng
authors.initials: S
authors.lastname: Dai
mesh_terms: D000327:Adsorption; D002244:Carbon / Q000737:chemistry*; D002245:Carbon Dioxide / Q000737:chemistry*; D052578:Ionic Liquids / Q000737:chemistry*; D017348:Microscopy, Electron, Scanning Transmission; D053758:Nanoparticles; D016062:Porosity
chemical_list: D052578:Ionic Liquids; D002245:Carbon Dioxide; D002244:Carbon
keywords: adsorption; carbon capture; electron microscopy; functionalization; ionic liquids