▎ 摘　　要

Graphene oxide (GO) was synthesized by modified Hummer's method and converted to reduced graphene oxide (rGO) by chemical method. GO and rGO were decorated with silver/silver oxide (Ag/Ag2O-GO and Ag/Ag2O-rGO) by electrochemical method without using any stabilizing agent. Structural and physiochemical properties of the products were investigated with the help of ultraviolet-visible spectroscopy (UV-vis), Fourier transform infrared spectroscopy (FTIR), X-ray powder diffraction (XRD), and scanning electron microscope (SEM) images. Energy dispersive X-ray (EDX) analysis and XRD confirmed the deposition of silver and silver oxide on the GO and rGO. Further, Ag/Ag2O-rGO was applied for amperometric sensing of glucose in alkaline solution due to the presence of a thin layer of silver on the surface of rGO. Current-time dynamic response at + 0.60 V step potential vs. Hg/HgO in NaOH (0.1 M) were recorded, and linear response was obtained (R (2) = 0.991) as a function of glucose concentration (0.2-8 mM), with a detection limit of 0.060 mM (S/N ratio 3) and sensitivity of 32 mu AmM-1 cm(-2). The signal corresponding to glucose was not seen to be affected due to interference from ascorbic acid, uric acid, and chloride ions present in the solution.