Article info.

ABSTRACT

Received 15 May 2016
Revised 29 Nov 2016

Accepted 29 Jul 2017

Nonenzymatic biosensors based on Ag/CuO nanofibers have been successfully investigated. Polyvinylpyrrolidone nanofibers loaded AgNO₃/Cu(NO₃)₂ were successfully synthesized by an electrospinning method. The conditions of electrospinning included 8% PVP solution, feed rate of polymer solution of 0.5 mL/h, applied voltage of 20 kV, and the tip-to-collector distance of 8 cm. The nanofibers were carbonized at 300, 450, and 600^oC to obtain Ag/CuO nanofibers. The Ag/CuO nanofibers were characterized by scanning electron microscopy, transmission electron microscopy, and X-ray diffraction analyses to confirm the morphology as well as the formation of copper oxide and silver. The Ag/CuO nanofibers were used to construct a nonenzymatic glucose sensor. The Ag/CuO NFs-IGZO electrode was applied to detect glucose by cyclic voltammetry. The direct oxidation of glucose in sodium hydroxide medium at Ag/CuO nanofiber modified electrodes has been investigated.

Keywords

Electrospinning, glucose sensor, nonenzyme

Cited as: Thien, D.V.H., Toan, H.T., Quyen, T.T.B., Tri, N.M., 2017. Electrospun CuO/Ag nanofibers for nonenzymatic glucose sensors. Can Tho University Journal of Science. Vol 6: 63-68.