Fig. 3: CO2 binding mechanism from solid-state NMR experiments.
From: Capturing carbon dioxide from air with charged-sorbents
a, Quantitative 13C solid-state NMR spectra of sorbents with 13CO2 gas dosing at the pressure of 0.9 bar, acquired at a MAS rate of 12.5 kHz (see Extended Data Fig. 7a for a control experiment with no CO2 dosing). b, Proposed mechanism for CO2 capture by positively (hydroxide) charged-sorbent. Schematic adapted from ref. 33, Springer Nature America. c, CO2 uptake of sorbents by means of chemical and physical adsorption calculated from resonances at 156 and 119 ppm of a, respectively.
