Synthesis of yarn ball-like NiCo-LDH/carbon paper self-supporting electrode and the electrocatalytic property towards glucose

The yarn ball-like NiCo-LDH was electrodeposited on carbon paper (CP) through adjusting and controlling the synthetic parameters such as cobalt ion concentration, synthetic potential and time by potentiostatic deposition, and was constructed an enzyme-free glucose sensor; the electrocatalytic behavior of the as-prepared NiCo-LDH/CP electrode towards the glucose was investigated through cyclic voltammetry (CV) and amperometric current–time response (I-t). The results showed that the sensor constructed on the basis of as-prepared NiCo-LDH/CP had not only a wide range of 0.84–11.04 mM, high sensitivity (5810 μA·mM⁻¹·cm⁻²) and a low detection limit of 0.0546 μM, but also remarkable selectivity, striking repeatability and stability. Besides, the sensor based on NiCo-LDH/CP electrode had an excellent actual measurement with the recoveries of 98.86–101.05%.