A glucose biosensor based on TiO(2)-Graphene composite |
| |
Authors: | Jang Hee Dong Kim Sun Kyung Chang Hankwon Roh Ki-Min Choi Jeong-Woo Huang Jiaxing |
| |
Affiliation: | Rare Metals Research Center, Korea Institute of Geoscience and Mineral Resources, Daejeon 305-350, Korea. |
| |
Abstract: | A novel glucose biosensor was developed based on the adsorption of glucose oxidase at a TiO(2)-Graphene (GR) nanocomposite electrode. A TiO(2)-GR composite was synthesized from a colloidal mixture of TiO(2) nanparticles and graphene oxide (GO) nanosheets by an aerosol assisted self-assembly (AASA). The particle morphology of all TiO(2)-GR composites was spherical in shape. It was observed that micron-sized TiO(2) particles were encapsulated by GR nanosheets and that the degree of encapsulation was proportional to the ratio of GO/TiO(2). The amperometric response of the glucose biosensor fabricated by the TiO(2)-GR composite was linear against a concentration of glucose ranging from 0 to 8mM at -0.6V. The highest sensitivity was noted at about 6.2μA/mMcm(2). The as prepared glucose biosensor based on the TiO(2)-GR composite showed higher catalytic performance for glucose redox than a pure TiO(2) and GR biosensor. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |