Evaluation of sensitivity of Extended Gate Field Effect Transistor -biosensor based on VO/GOx for glucose detection.

The sensing modified electrode was prepared using glucose oxidase immobilized onto vanadium pentoxide xerogel with glass/FTO as support electrode to evaluate the possibility to construct a VO/GOx Extended Gate Field Effect Transistor biosensor. Previously, our studies exhibited a sensitivity of VO of 58.1 mV/pH.

Synthesis and characterization of V O /urease for a biosensor of urea.

Vanadium pentoxide (V O ) was used as support material to immobilize the urease enzyme. V O was prepared from a sol-gel process, and the immobilization of urease was done onto the surface of the PET/ITO/V O film. Different concentrations of urea were tested to study the sensitivity of the biosensor.