Copper and iron co-doping effects on the structure, optical energy band gap, and catalytic behaviour of Co₃O₄ nanocrystals towards low-temperature total oxidation of toluene

Abstract

Herein, we report the effect of Cu and Fe addition on the structural, morphological, optical energy band gap (Egopt) on the catalytic performance of Co3O4 nanocrystals (NCs). Simple co-precipitation technique,...

Recent Advances in Co3O4-Based Composites: Synthesis and Application in Combustion of Methane

“…After Co loading, the methane combustion catalytic activity was significantly boosted, and SmMn2O5 proved to be the key player in stabilizing the Co3O4 against sintering. This kind of mutual promotion paid off, with the Co/SMO-50% (50% represents the proportion of SmMn2O5) catalyst displaying overall superior catalytic performance with In conclusion, the appropriate amount of metal oxide doping can enhance the oxygen activity and stability of Co-O bond and elevate the concentration of active oxygen [132][133][134][135], thus improving the catalytic efficiency of methane oxidation reaction [102,[136][137][138]. For example, doping of CeO 2 can introduce a large number of oxygen vacancies into the Co In addition, ZrO 2 can also cause lattice distortion, increase surface defects, promote the formation of Co-O bonds, and improve its oxygen activity and stability.…”

“…In conclusion, the appropriate amount of metal oxide doping can enhance the oxygen activity and stability of Co–O bond and elevate the concentration of active oxygen [ 132 , 133 , 134 , 135 ], thus improving the catalytic efficiency of methane oxidation reaction [ 102 , 136 , 137 , 138 ]. For example, doping of CeO 2 can introduce a large number of oxygen vacancies into the Co 3 O 4 lattice, forming more oxygen active sites on the Co–O bond, thereby increasing the oxygen reduction capacity of the Co 3 O 4 catalyst surface and the adsorption capacity of methane molecules.…”