ZIF-67-derived Co3O4 porous crystalline material for electrochemical ascorbic acid detection

Abstract

The Co₃O₄ porous crystalline material was synthesized by calcining ZIF-67 sample in the air. The Co₃O₄ material was characterized by XRD, BET, SEM, and EDS. The electrode modified with Co₃O₄ was used to determine ascorbic acid. The proposed Co₃O₄-GPE electrode exhibited a linear range of 2 µM to 15 µM with a detection limit of 0.48 µM. Recovery results, ranging from 97.82% to 99.5%. for ascorbic acid in pharmaceutical tablet.