title: UV-Visible and Plasmonic Nanospectroscopy of the CO2 Adsorption Energetics in a Microporous Polymer.
abstract: In the context of carbon capture and storage (CCS), micro- and mesoporous polymers have received significant attention due to their ability to selectively adsorb and separate CO2 from gas streams. The performance of such materials is critically dependent on the isosteric heat of adsorption (Qst) of CO2 directly related to the interaction strength between CO2 and the adsorbent. Here, we show using the microporous polymer PIM-1 as a model system that its Qst can be conveniently determined by in situ UV-vis optical transmission spectroscopy directly applied on the adsorbent or, with higher resolution, by indirect nanoplasmonic sensing based on localized surface plasmon resonance in metal nanoparticles. Taken all together, this study provides a general blueprint for efficient optical screening of micro- and mesoporous polymeric materials for CCS in terms of their CO2 adsorption energetics and kinetics.
authors.affiliation: Department of Applied Physics, Chalmers University of Technology , SE-412 96, Göteborg, Sweden.
authors.forename: Ferry A A
authors.initials: FA
authors.lastname: Nugroho
authors.affiliation: Department of Materials and Environmental Chemistry, Berzelii Center EXSELENT on Porous Materials, Arrhenius Laboratory, Stockholm University , SE-106 91, Stockholm, Sweden.
authors.forename: Chao
authors.initials: C
authors.lastname: Xu
authors.affiliation: Department of Materials and Environmental Chemistry, Berzelii Center EXSELENT on Porous Materials, Arrhenius Laboratory, Stockholm University , SE-106 91, Stockholm, Sweden.
authors.forename: Niklas
authors.initials: N
authors.lastname: Hedin
authors.affiliation: Department of Applied Physics, Chalmers University of Technology , SE-412 96, Göteborg, Sweden.
authors.forename: Christoph
authors.initials: C
authors.lastname: Langhammer
mesh_terms: D000327:Adsorption; D002245:Carbon Dioxide / Q000737:chemistry*; D036103:Nanotechnology; D010316:Particle Size; D011108:Polymers / Q000737:chemistry*; D016062:Porosity; D020349:Surface Plasmon Resonance; D013499:Surface Properties; D014466:Ultraviolet Rays
chemical_list: D011108:Polymers; D002245:Carbon Dioxide