Metal-organic framework derived Co/Co3O4/carbon composite as a sensing platform for the detection of H2O2

Metal-organic frameworks (MOFs), with a particular focus on zeolite-imidazole frameworks (ZIFs), have garnered significant interest as potential templates for the fabrication of sensing materials. In this work, we fabricated a porous stick structure of S-Co3O4/Co/C through the two-step pyrolysis of stick-like ZIF-67 (ZIF-S). Various methodologies were utilized to investigate the structures and composition of the nanocomposites. The SCo3O4/Co/C was further utilized as electrode components in electrocatalytic determination of H2O2. Thanks to the unique stick-like structure and the synergistic effects of Co3O4, Co, and carbon, the fabricated sensor showed wide linear range (0.5-4000; 4000-11,000 mu M), high sensitivity (1.01; 0.90 mu A mu M-1 cm-2) and low detection limit (0.29 mu M) for H2O2 sensing. The study being presented is anticipated to offer a novel outlook on the possible utility of nanocomposites derived from MOFs in the realm of electrochemical sensing.