▎ 摘　　要

Nitrogen doping is considered as a promising strategy to tailor and develop the intrinsic properties of graphene. In this work, we report a facile method for preparation of nitrogen-doped graphene scrolls (N-GSS) through acoustic cavitation, which can not only realize graphene nitrogen doping but also simultaneously result in its scrolled topological structure and improvement of reduction degree. As a metal-free electrocatalyst, the prepared N-GSS showed good electrocatalytic activity towards oxidation of hydrogen peroxide with the sensitivity of 87.8 mu A mM(-1) cm(-2). Then N-GSS was employed as a matrix for glucose oxidase (GOD) loading, and the fabricated biosensor also exhibited excellent analytical characteristics, such as a high sensitivity (55.2 mu A mM(-1) cm(-2)), wide linear range (2 mu M to 3.56 mM, R = 0.999) and low detection limit (1 mu M).