(Hydro)peroxide ligands on colloidal cerium oxide nanoparticles†
Abstract
Anhydrous H2O2 reacts with organic colloidal solutions of ceria nanoparticles to form a stable surface peroxo/hydroperoxo species with the release of oleate capping ligands into solution. A new optical spectroscopic signature was identified for cerium-peroxo/hydroperoxo species in solution and correlated with solid-state IR spectroscopy and chemical reactivity.