Insertion of CO₂ in metal ion-doped two-dimensional covalent organic frameworks.

ABSTRACT: Carbon capture is one of the essential low-carbon technologies required to achieve societal climate goals at the lowest cost. Covalent organic frameworks (COFs) are promising adsorbents for CO₂ capture because of their well-defined porosity, large surface area, and high stability. Current COF-based CO₂ capture is mainly based on a physisorption mechanism, exhibiting smooth and reversible sorption isotherms. In the present study, we report unusual CO₂ sorption isotherms featuring one or more tunable hysteresis steps with metal ion (Fe³⁺, Cr³⁺, or In³⁺)-doped Schiff-base two-dimensional (2D) COFs (Py-1P, Py-TT, and Py-Py) as adsorbents. Synchrotron X-ray diffraction, spectroscopic and computational studies indicate that the sh

SUBMITTER: Kang C 

PROVIDER: S-EPMC9992840 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature