Progress of Catalytic Oxidation of Formaldehyde over Manganese Oxides

Abstract Thermal catalytic oxidation is a promising and effective technique for the removal of harmful formaldehyde (HCHO) in indoor air. Manganese oxide is a mostly‐investigated non‐noble metal oxide catalyst and attracts much attention due to its better catalytic performance for formaldehyde oxidation at low temperature. In this review, the effect of manganese oxide crystal structure, surface morphology and microstructure, surface active oxygen species, reducibility as well as catalytic reaction conditions (temperature, relative humidity and HCHO initial concentration) on catalytic performance, and the catalytic mechanism over manganese oxide were summarized and discussed. The challenges and prospects for future development of manganese oxide in catalytic oxidation of formaldehyde are also covered.