Ching-Yu Cheng: current status quo of population-based study on glaucoma

Progress of Catalytic Oxidation of Formaldehyde over Manganese Oxides

“…In this review, the effect of manganese oxide crystal structure, surface morphology and microstructure, sur-face 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.Various approaches were used to remove HCHO, such as adsorption, [31,[33][34] plasma technique, [35] photocatalysis [36][37][38][39][40] and thermal catalytic oxidation. [41][42][43][44] The adsorption method is limited by the maximum adsorption capacity; [32,45] plasma technique has problems of secondary pollution, high energy consumption, and high cost; photocatalysis is limited by the excitation light source.…”

“…Various approaches were used to remove HCHO, such as adsorption, [31,[33][34] plasma technique, [35] photocatalysis [36][37][38][39][40] and thermal catalytic oxidation. [41][42][43][44] The adsorption method is limited by the maximum adsorption capacity; [32,45] plasma technique has problems of secondary pollution, high energy consumption, and high cost; photocatalysis is limited by the excitation light source.…”