H2O2 decomposition catalyzed by strontium cobaltites and their application in Rhodamine B degradation in aqueous medium

Synthesis, characterization and catalytic investigation of alumina supported derived benzene- 1,3 diol - cobalt complexes

“…The results obtained indicate that the presence of Co-complexes dopants can lead to an elevation in catalytic performance. Moreover, the presence of active redox couples (Mn + /Mn +1 ) on the catalyst surface is anticipated to be the primary cause of the H2O2 decomposition enhancement when employing Co-complexes [28,30]. Due to the adequate amount of metal ions on the alumina surface and the higher concentration of reactants close to the active sites on the alumina support, which speed up the reaction rate compared to alumina alone, the Co-complexes supported on alumina catalyst exhibit significant catalytic activity [31].…”

“…Due to the adequate amount of metal ions on the alumina surface and the higher concentration of reactants close to the active sites on the alumina support, which speed up the reaction rate compared to alumina alone, the Co-complexes supported on alumina catalyst exhibit significant catalytic activity [31]. The proposed mechanism for the H2O2 decomposition reaction includes the cycle of electron transport from the surface of the catalyst to the H2O2 molecule [10,32].…”

“…Additionally, 0.015 Co-H4L 2 / Al2O3 has the highest rate constant (k) as displayed in Table 3. Furthermore, the Co-complex/Al2O3 catalysts kinetics were examined at three distinct temperatures (30,40, and 50 °C) in order to determine the activation energy involved in the catalytic breakdown of H2O2. It has been noted that as temperature rises, the reaction rate constant improves.…”