▎ 摘　　要

In this paper, Au nanoparticles/reduced graphene oxide (AuNPs/rGO) nanocomposites were prepared through a one-pot strategy, carried out by heating the mixture of HAuCl4 and graphene oxide solution at 90 degrees C under alkaline condition. The resultant AuNPs/rGO nanocomposites were found to exhibit good catalytic performance toward H2O2 reduction and oxidation as well as hydrazine oxidation. The electrochemical sensing application of the nanocomposites for H2O2, glucose, and hydrazine was also demonstrated successfully.