▎ 摘　　要

Co3O4/graphene oxide (GO) nanocomposites were successfully prepared by a depositing-decomposition method. The as-prepared samples were characterized by scanning electron microscopy (SEM) and Raman spectroscopy. Cyclic voltammetry (CV) was used to evaluate the electrochemical response of a glass carbon electrode (GCE) modified with Co3O4/GO nanocomposite towards glucose. Compared with the Co3O4/GCE, the Co3O4/GO/GCE exihibits higher electrocatalytic activity due to the synergistic effects of electrocatalytic ability of Co3O4 and large surface of GO. The Co3O4/GO/GCE was applied for glucose detection in alkaline solution. The linear current response range of glucose on Co3O4/GO/GCE covered the range from 9 x 10(-5) to 6.03 x 10(-3) M, with a detection limit of 5.2 x 10(-7) M (S/N = 3).