▎ 摘　　要

The utilization of graphene-based aerogels in electrochemical analysis is a promising potential of this unique material. So far, most related works use the aerogels as the modifiers of the conventional electrodes. We report here the fabrication of graphene-based aerogel decorated with gold nanoparticles through a simple cast-freeze-drying process and the direct use of the aerogel composite piece as electrode in the detection of H2O2. The as-prepared aerogel composites are characterized by scanning electron microscopy, X-ray photoelectron spectroscopy, X-ray diffraction and Raman spectroscopy. The aerogel electrode acting as the H2O2 sensor shows satisfying electrocatalytic performances, including fast response, low detection limit and good stability. (C) 2017 Elsevier B. V. All rights reserved.