Catalytic Decomposition of Residual Ozone over Cactus-like MnO₂ Nanosphere: Synergistic Mechanism and SO₂/H₂O Interference.

ABSTRACT: Ground-level ozone is an irritant and is harmful to human respiratory and nervous systems. Thus, four manganese oxides with different crystals were hydrothermally synthesized to decompose residual ozone (deO₃) in an ozone synergistic-oxidation system. Among them, a cactus-like MnO₂-IV nanosphere exhibited the highest deO₃ activity, with excellent tolerance to water vapor and SO₂/H₂O, which could maintain >88% deO₃ efficiency in the high-humidity and sulfur-containing conditions. It benefits from the unique morphology, high specific surface area, superior redox properties, oxygen chemisorption capabilities, abundant surface-active hydroxyl species, and low valence Mn species. More importantly, the detailed interference mechan

SUBMITTER: Tang H 

PROVIDER: S-EPMC8945177 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature