▎ 摘　　要

Herein, we report on the simultaneous reduction and functionalization of graphene oxide (GO) with environmentally friendly tyrosine through the direct reaction of GO with tyrosine (Tyr) at 100 degrees C for 24 h. The resultant material (rGO/Tyr) has been characterized using UV-vis spectrometry, FTIR spectroscopy, X-ray photoelectron spectroscopy (XPS), and electrochemical measurements. The rGO/Tyr nanomaterial displayed good electrocatalytic activity for the detection of hydrogen peroxide (H2O2) with a wide linear range from 100 mu M to 2.1 mM, a detection limit of 80 mM and a sensitivity of 69.07 mu AmM-1 cm(-2). In addition, the rGO/Tyr electrode showed good selectivity for H2O2 detection in the presence of uric acid, ascorbic acid, dopamine and glucose.