Ce 3+ ‐Centric Organic Pollutant Elimination by CeO 2 in the Presence of H 2 O 2

Deadly cerias: The decomposition of organics in a CeO2/H2O2 system is achieved through their reaction with the interfacial peroxide species on CeO2. The reactivity however relies on a necessary level of Ce3+ for activation. The concentration of Ce3+ from the interfacial peroxide species was ensured by the reaction of adsorbed organics.