title: Salt Templating with Pore Padding: Hierarchical Pore Tailoring towards Functionalised Porous Carbons.
abstract: We propose a new synthetic route towards nanoporous functional carbon materials based on salt templating with pore-padding approach (STPP). STPP relies on the use of a pore-padding agent that undergoes an initial polymerisation/ condensation process prior to the formation of a solid carbon framework. The pore-padding agent allows tailoring hierarchically the pore-size distribution and controlling the amount of heteroatom (nitrogen in this case) functionalities as well as the type of nitrogen (graphitic, pyridinic, oxides of nitrogen) incorporated within the carbon framework in a single-step-process. Our newly developed STPP method offers a unique pathway and new design principle to create simultaneously high surface area, microporosity, functionality and pore hierarchy. The functional carbon materials produced by STPP showed a remarkable CO2/N2selectivity. At 273 K, a carbon with only micropores offered an exceptionally high CO2adsorption capacity whereas a carbon with only mesopores showed promising CO2-philicity with high CO2/N2selectivity in the range of 46-60 %, making them excellent candidates for CO2capture from flue gas or for CO2storage.
authors.affiliation: School of Engineering and Materials Science&Materials Research Institute, Queen Mary, University of London, Mile End Road, London, E1 4NS, UK.
authors.forename: K Vasanth
authors.initials: KV
authors.lastname: Kumar
authors.affiliation: Department of Chemistry, University College London, 20 Gordon Street, London, WC1H 0AJ, UK.
authors.forename: Srinivas
authors.initials: S
authors.lastname: Gadipelli
authors.affiliation: School of Engineering and Materials Science&Materials Research Institute, Queen Mary, University of London, Mile End Road, London, E1 4NS, UK.
authors.forename: Kathrin
authors.initials: K
authors.lastname: Preuss
authors.affiliation: School of Engineering and Materials Science&Materials Research Institute, Queen Mary, University of London, Mile End Road, London, E1 4NS, UK.
authors.forename: Harshit
authors.initials: H
authors.lastname: Porwal
authors.affiliation: Department of Chemistry, University College London, 20 Gordon Street, London, WC1H 0AJ, UK.
authors.forename: Tingting
authors.initials: T
authors.lastname: Zhao
authors.affiliation: Department of Chemistry, University College London, 20 Gordon Street, London, WC1H 0AJ, UK.
authors.forename: Zheng Xiao
authors.initials: ZX
authors.lastname: Guo
authors.affiliation: School of Engineering and Materials Science&Materials Research Institute, Queen Mary, University of London, Mile End Road, London, E1 4NS, UK.
authors.forename: Maria-Magdalena
authors.identifier: http://orcid.org/0000-0003-0773-2100
authors.initials: MM
authors.lastname: Titirici
mesh_terms: D000327:Adsorption; D002244:Carbon / Q000737:chemistry*; D002245:Carbon Dioxide / Q000737:chemistry; D008958:Models, Molecular; D008968:Molecular Conformation; D058105:Polymerization; D016062:Porosity; D012492:Salts / Q000737:chemistry*; D013499:Surface Properties; D013696:Temperature
chemical_list: D012492:Salts; D002245:Carbon Dioxide; D002244:Carbon
keywords: N-doped carbon; biomass; carbon dioxide; porosity; salt templating