Corresponding Author

Hui-juan WANG(hjwang120@126.com)


Ultrathin cobalt oxide (Co3O4 ) nanoflakes film material was synthesized by using an electro-deposited cobalt layer as a raw material through a simple oxidation method and followed by a heat treatment at 350 oC. The physical characterizations of the Co3O4 nanoflakes film were performed by scanning electron microscopy (SEM), X-ray diffraction (XRD) and transmission electron microscopy (TEM) technologies, and the electrochemical activity was measured by cyclic voltammetry (CV). As a promising material for electrochemical sensing, the as-synthesized ultrathin Co3O4 nanoflakes film material exhibited excellent electrochemical activity for H2O2 with a wide linear detection range (0 ~ 4 mmol•L-1) and high sensitive current response (~ 1.15 mA•cm-2).

Graphical Abstract


Co3O4, film material, ultrathin nanoflakes, electrochemical sensing; H2O2 detecting

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