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Updated: Feb 11, 2026

Analysis of the Ambient Particulate Matter-induced Chromosomal Aberrations Using an In Vitro System
Published on: December 21, 2016
Humidity-swing mechanism for CO2 capture from ambient air
Hao Yang1, Manmilan Singh, Jacob Schaefer
1Department of Chemistry, Washington University, St. Louis, MO 63130, USA. jschaefer@wustl.edu.
Abstract:
A humidity-swing polymeric sorbent captures CO2 from ambient air at room temperature simply by changing the humidity level. To date there has been no direct experimental evidence to characterize the chemical mechanism for this process. In this report we describe the use of solid-state NMR to study the humidity-swing CO2 absorption/desorption cycle directly. We find that at low humidity levels CO2 is absorbed as HCO3-. At high humidity levels, HCO3- is replaced by hydrated OH- and the absorbed CO2 is released.
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