Abstract
This paper presents the fabrication of a highly sensitive and selective glucose biosensor based on spruce branched alpha-Fe2O3 nanostructures. The spruce branched alpha-Fe2O3 nanostructures were synthesized by a hydrothermal process and characterized by using various techniques. The fabricated glucose biosensor exhibited a very high and reproducible sensitivity of 85.384 mu A mM(-1) cm(-2) with a response time of less than 2 s and a detection limit (based on S/N ratio) of 1 mu M. A linear dynamic range from 0.003-33 mM with a correlation coefficient (R-2) of 0.9996 was observed for the fabricated biosensor.