Patent ID: 11926901
Assignee: NATIONAL YUNLIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
Field: Measurement (Instruments)
Classification: CPC C  G | IPC C  G

Claim 4:
5. The method of claim 1 for fabricating a nonenzymatic glucose sensor, wherein, in the step (e), the electrodeposition method is proceeded as follows: mixing 16.2 g of 85% lactic acid (C3H6O3), 3 g of hydrated copper sulfate (Cu2SO4·5H2O) and 46.5 mL of deionized water to make up a solution with an amount of 60 mL, in which the molar ratio of lactic acid and hydrated copper sulfate is 3:0.2; adding sodium hydroxide (NaOH) to the solution slowly, until the solution pH reaches to 9;
keeping the solution standing still for a period of time to slowly cool down the solution temperature which increases due to the thermal energy released from neutralizing the acids with an alkali during the preparation of the solution; a second precursor solution is formed when the neutralization process is completed thoroughly; the bottom surface, being processed in the step (d) and comprises the graphene layer and the ZnO nanorods, is then immersed into the second precursor solution to be a working electrode, a counter electrode made of platinum (Pt) and a reference electrode made of silver chloride (Ag/AgCl) are immersed into the second precursor solution; the second precursor solution is then heated to a temperature of 50 degrees Celsius on a hot plate to be used as an electrolyte for the electrodeposition, during which, particles of Cu2O will be electrodeposited on the surface of the working electrode, resulting in the formation of a thin film of Cu2O; the electric potential applied on the working electrode is −0.6 V (vs Ag/AgCl).