Perovskite-type Oxide Catalysts for VOCs Removal: Recent Advances and Future Prospects

Abstract

Volatile organic compounds (VOCs) pose a significant environmental challenge, necessitating effective and sustainable mitigation strategies. Catalytic oxidation has emerged as a preferred alternative to direct combustion, primarily due to its lower energy consumption and reduced secondary pollution. Perovskite oxide catalysts have sparked significant interest in the environmental field, owing to their adjustable structures, strong redox properties, and superior catalytic stability. A wide range of perovskite oxide catalysts has been designed for the catalytic oxidation of VOCs, aiming to meet increasingly stringent pollutant emission regulations. Due to compositional flexibility of the perovskite structure, key factors such as defect formation, electron and oxygen migration, and the adsorption and activation of oxygen and reactive substrates are strongly influenced by elemental composition, synthesis methods, doping strategies, and surface modifications, thereby determining the catalytic oxidation activity and stability for VOCs. Herein, this review provides a holistic view of recent advances in perovskite oxide catalysts for VOCs catalytic oxidation from various perspectives, with particular focus on how composition, structural design, and surface modification influence catalytic performance. By examining these relationships, the review aims to bridge existing knowledge gaps regarding the structure-performance relationships in diverse perovskite oxide catalysts in VOCs catalytic oxidation. Ultimately, this work provides valuable insights and a practical reference for the future development and application of perovskite oxide catalysts in VOCs oxidation for environmental protection.