Direct CO₂ Capture from Air via Crystallization with a Trichelating Iminoguanidine Ligand.

ABSTRACT: Effectively reducing the concentration of CO₂ in ambient air is essential to mitigate global warming. Existing carbon capture and storage technology can only slow down the carbon emissions of large point sources but cannot treat the already accumulated CO₂ in the environment. Herein, we demonstrated a simple direct CO₂ capture method from air via reactive crystallization with a new trichelating iminoguanidine ligand (BTIG). It could strongly bind CO₂ to form insoluble carbonate crystals that could be easily isolated. In the crystal, CO₂ was transformed to CO₃ ^2- and trapped in a dense hydrogen bonding network in terms of carbonate-water clusters. This capture process was reversible, and the BTIG ligand could be re

SUBMITTER: Cai H 

PROVIDER: S-EPMC7439369 | biostudies-literature | 2020 Aug

REPOSITORIES: biostudies-literature