Characterization of carbon nanofibers (CNFs) for glucose based biosensor application

In this research electrochemistry of carbon nanofibers (CNFs) has been investigated as part of a biosensor that is able to detect glucose at various environments. The electrical and chemical characteristics of dry and wet CNF are studied and found to be ohmic between -2 and +2 volts with a frequency range of 13 Hz to 850 kHz. The cyclic voltammetric (CV) results indicated that glucose oxidase GOx assembled on CNF exhibit a surface-confined process where electrode´s electrochemical characteristic plays an important role. The tests are performed using a two and three-electrode analyzer, with positive results at glucose concentrations as low as 2 mM.