Carboxylic acids and light interact to affect nanoceria stability and dissolution in acidic aqueous environments.

ABSTRACT: Cerium atoms on the surfaces of nanoceria (i.e., cerium oxide in the form of nanoparticles) can store or release oxygen, cycling between Ce³⁺ and Ce⁴⁺; therefore, they can cause or relieve oxidative stress within living systems. Nanoceria dissolution occurs in acidic environments. Nanoceria stabilization is a known problem even during its synthesis; in fact, a carboxylic acid, namely citric acid, is used in many synthesis protocols. Citric acid adsorbs onto nanoceria surfaces, limiting particle formation and creating stable dispersions with extended shelf life. To better understand factors influencing the fate of nanoceria, its dissolution and stabilization have been previously studied in vitro using acidic aqueous environments. Nanoceria agglomerated in the presence

SUBMITTER: Hancock ML 

PROVIDER: S-EPMC10315891 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature