Effect of Exposed Facets and Oxidation State of CeO₂ Nanoparticles on CO₂ Adsorption and Desorption.

ABSTRACT: CeO₂ nanoparticles exhibit potential as solid adsorbents for carbon dioxide (CO₂) capture and storage (CCS), offering precise control over various facets and enhancing their efficiency. This study investigated the adsorption and desorption behaviors of two types of CeO₂ nanoparticles: cubic CeO₂ with primarily {001} facets and polyhedral CeO₂ with mainly {111} facets. The results showed that despite polyhedral CeO₂'s lower quantity, it demonstrated successful adsorption-desorption cycles in both oxidized and reduced states. However, reduced CeO_2-x exhibited a higher adsorption capacity but displayed irreversible adsorption-desorption cycles. Reversible adsorption occurred through weak bond formation with CO

SUBMITTER: Seong G 

PROVIDER: S-EPMC11651629 | biostudies-literature | 2024 May

REPOSITORIES: biostudies-literature