Challenges and opportunities of catalytic decomposition of ozone at room temperature

Catalytic decomposition is a key technology for the removal of ozone (O₃). Practical application scenarios require catalysts with superior O₃ decomposition performance at ambient temperatures, high humidity, and high space velocities. In this review, the strategies for the design of catalysts with efficient and stable O₃ decomposition performance are presented, and the three factors that limit the catalytic decomposition of O₃ at ambient temperature (insufficient active sites, competitive adsorption of H₂O and O₃ molecules, and difficult desorption of intermediate oxygen species) are systematically summarized for the first time. Subsequently, the research progress in recent years is categorized and summarized in terms of addressing the three factors limiting O₃ decomposition, which in turn suggests the shortcomings of current research and the focus of future research.