▎ 摘　　要

A novel graphene-polydopamine nanomaterial with biomimetic functions was synthesized. The graphene-polydopamine nanomaterial was applied in the fabrication of H2O2 biosensors by using hydroquinone as electron mediator. The modified electrode exhibited good electrocatalytical activity to H2O2. The linear range was from 5.0 x 10(-7) to 3.3 x 10(-4) mol/L with a detection limit of 3.7 x 10(-7) mol/L (S/N=3) and the linear correlation coefficient was 0.9995.