Introducing Schottky interface as a novel strategy for ultrasensitive nonenzymatic glucose detection

A novel nonenzymatic glucose sensor based on Schottky interface was successfully fabricated by facile annealed and sputtering methods. The multiple catalysis effect of NiO, Au and 3D architecture improved the catalytic activity towards glucose. In addition, the biosensing performance was enhanced significantly due to the introducing of Schottky interface. Consequently, the fabricated biosensor demonstrated excellent performance in sensing glucose with a high sensitivity (6302.25 μA mM1 cm2), low detection limit (1.16 μM), good repeatability and long-term stability. The results indicated that introducing Schottky interface can be a promising strategy in the development of nonenzymatic glucose biosensors.