▎ 摘　　要

A novel glucose biosensor was developed based on the adsorption of glucose oxidase at a TiO2-Graphene (GR) nanocomposite electrode. A TiO2-GR composite was synthesized from a colloidal mixture of TiO2 nanparticles and graphene oxide (GO) nanosheets by an aerosol assisted self-assembly (AASA). The particle morphology of all TiO2-GR composites was spherical in shape. It was observed that micron-sized TiO2 particles were encapsulated by GR nanosheets and that the degree of encapsulation was proportional to the ratio of GO/TiO2. The amperometric response of the glucose biosensor fabricated by the TiO2-GR composite was linear against a concentration of glucose ranging from 0 to 8 mM at -0.6 V. The highest sensitivity was noted at about 6.2 mu A/mM cm(2). The as prepared glucose biosensor based on the TiO2-GR composite showed higher catalytic performance for glucose redox than a pure TiO2 and GR biosensor. (C) 2012 Elsevier B.V. All rights reserved.