The influence of cobalt loading on electrocatalytic performance toward glucose oxidation of pillared montmorillonite-supported cobalt

Co/CoO nanoparticles armored by N-doped nanoporous carbon polyhedrons towards glucose oxidation in high-performance non-enzymatic sensors

“…5A, the curves of Co/ CoO/N-C/ITO with 0-7 mM glucose were observed at 0.55 V in 0.6 M NaOH. The rate constant (K Cat ) of glucose oxidation between Co/CoO/N-C and glucose can be calculated according to the following equation: 33,34…”

“…5A, the curves of Co/CoO/N-C/ITO with 0–7 mM glucose were observed at 0.55 V in 0.6 M NaOH. The rate constant ( K Cat ) of glucose oxidation between Co/CoO/N-C and glucose can be calculated according to the following equation: 33,34 I Cat / I L = π 1/2 ( K Cat C t ) 1/2 where I Cat and I L are the currents in the presence and absence of glucose, respectively (μA), and C and t are the bulk concentrations of glucose (M) and the elapsed time (s), respectively. Fig.…”

Oxidation of Allura Red AC Using the NaHCO3-activated H2O2 System Catalyzed with Cobalt Supported on Al-PILC

“…The above suggests that the Co x O y was dispersed in Al-PILC or was non-crystalline [15,39]. Other characterization techniques have confirmed the presence of cobalt oxides in impregnated pillared clays and the oxidation state of Co [39,40]. Marković et al (2019) [39] and Milovanović et al (2022) [40] confirmed by XPS analysis only the presence of Co 2+ in aluminum-pillared clays impregnated with low cobalt loadings (in the range of 1.0-3.0 wt.%).…”

“…Other characterization techniques have confirmed the presence of cobalt oxides in impregnated pillared clays and the oxidation state of Co [39,40]. Marković et al (2019) [39] and Milovanović et al (2022) [40] confirmed by XPS analysis only the presence of Co 2+ in aluminum-pillared clays impregnated with low cobalt loadings (in the range of 1.0-3.0 wt.%). Therefore, for the Co(1.0%)/Al-PILC material, the oxidation state of cobalt would be expected to be 2+.…”