Electrodeposition and electrocatalytic properties of Chrysalidocarpus lutescens -like cobalt materials

• The Chrysalidocarpus lutescens-like cobalt (Co) materials were prepared by electrodeposition without any template or surfactantand.
• The possible formation process of the Co materials was reported.
• The Co materials had excellent electrocatalytic activity for glucose oxidation.

The chrysalidocarpus lutescens-like cobalt (Co) materials were prepared on an electrode of indium tin oxide (ITO) by electrodeposition strategy without any template or surfactant. The morphology and composition of the Co materials were characterized by transmission electron microscope, scanning electron microscope, energy-dispersive spectrum and X-ray diffraction. The electrochemical behavior and electrocatalytic performance of the Co materials were evaluated by cyclic voltammetry and chronoamperometry, and the results showed the Co materials had electrocatalytic activity for glucose oxidation. The catalytic current was linear with glucose concentration from 0.2 to 14 μM (n=25, R=0.9998) and from 15 to 225 μM (n=26, R=0.9967) with a detection limit of 0.06 μM at a signal-to-noise ratio of 3. All of these features made the Co materials a promising electrode material for non-enzymatic glucose sensor.