An Antibacterial Nonenzymatic Glucose Sensor Composed of Carbon Nanotubes Decorated with Silver Nanoparticles

A glucose sensor composed of silver nanoparticles decorated carbon nanotubes (Ag-NPs/CNTs) prepared by ion implantation is described. Ag-NPs with size of 2–4 nm are uniformly distributed in the CNTs after ion implantation. This process provides a strong combination between Ag-NPs and CNTs and can effectively prevent the Ag-NPs from aggregation. A linear range of 125 µM to 10 mM towards glucose determination was obtained. The Ag-NPs/CNTs electrode shows minimal interferences from co-existence species such as uric acid and ascorbic acid and an antibacterial rate of 94 % towards E. coli.