Surface basicity mediated rapid and selective adsorptive removal of Congo red over nanocrystalline mesoporous CeO₂.

ABSTRACT: Herein we first report surface basicity mediated rapid and selective adsorptive removal of organic pollutants over nanocrystalline mesoporous CeO₂. The role of surface features in controlling the selectivity and efficiency of adsorption is well known. Nevertheless, the possibility of tuning the adsorption capacity and selectivity of adsorbents through their surface characteristics remains less explored. In this work, the surface basicity of mesoporous CeO₂ nanoparticles was improved by Er³⁺ doping under two different reaction conditions: via sol-gel and sol-hydrothermal methods. The nature and amount of surface basic sites were determined with the help of CO₂ temperature programmed desorption (TPD). The adsorption capacity and selectivity

SUBMITTER: Joshy D 

PROVIDER: S-EPMC9419567 | biostudies-literature | 2021 Nov

REPOSITORIES: biostudies-literature