Controlled alkali etching of MOFs with secondary building units for low-concentration CO₂ capture.

ABSTRACT: Low-concentration CO₂ capture is particularly challenging because it requires highly selective adsorbents that can effectively capture CO₂ from gas mixtures containing other components such as nitrogen and water vapor. In this study, we have successfully developed a series of controlled alkali-etched MOF-808-X (where X ranges from 0.04 to 0.10), the FT-IR and XPS characterizations revealed the presence of hydroxyl groups (-OH) on the zirconium clusters. Low-concentration CO₂ capture experiments demonstrated improved CO₂ capture performance of the MOF-808-X series compared to the pristine MOF-808 under dry conditions (400 ppm CO₂). Among them, MOF-808-0.07 with abundant Zr-OH sites showed the highest CO₂

SUBMITTER: Dong H 

PROVIDER: S-EPMC10430719 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature