Abstract
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 8mM at -0.6V. The highest sensitivity was noted at about 6.2μA/mMcm2. 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.
Original language | English (US) |
---|---|
Pages (from-to) | 184-188 |
Number of pages | 5 |
Journal | Biosensors and Bioelectronics |
Volume | 38 |
Issue number | 1 |
DOIs | |
State | Published - Oct 2012 |
Funding
This research was supported by the General Research Project of the Korea Institute of Geoscience and Mineral Resources (KIGAM) funded by the Ministry of Knowledge Economy.
Keywords
- Aerosol assisted self-assembly
- Cyclic voltammetry
- Glucose biosensor
- TiO-GR composite
ASJC Scopus subject areas
- Biotechnology
- Biophysics
- Biomedical Engineering
- Electrochemistry