Colloid Systems and Interfaces Stability of Cerium Oxide Nanoparticles in Aqueous Environments: Effects of pH, Ionic Composition, and Suwanee River Humic and Fulvic Acids
Linlin Mu,
Mahsa Ghorbani,
Philippe C. Baveye
et al.
Abstract:This study investigates the colloid systems and interfaces stability of cerium oxide nanoparticles in aqueous environments as a function of pH, monovalent cations (Na+) and divalent cations (Ca2+), and humic substances (humic acid (HA) and fulvic acid (FA)). Results show that the solution chemistry affected the colloidal stability and aggregation kinetics of CeO2 NPs. The pH point of zero charge (pHPZC) of CeO2 NPs was measured at pH 10.2 with diameter of CeO2 NPs aggregates of ∼1,700 nm. The effects of Na+ an… Show more
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