Bio-inspired Formation of Mesoporous LiNbO3 Nanotubes and Application for Glucose Biosensor

LiNbO 3 nanotubes are prepared by biotemplate-assisted synthetic route. The mesoporous LiNbO 3 nanotubes can be an ideal platform to immobilize glucose oxidase (GOx) for glucose biosensing. As the GOx-biocatalyzed oxidation of glucose yield H 2 O 2 , and LiNbO 3 can direct catalyze the generated H 2 O 2 . What's more, one dimensional channels will facilitate the diffusion of reactants and ensure adequate contact between glucose and enzymes. Thus the as-prepared biosensor exhibit high sensitivity (52.4   μA·mM −1 ·cm −2 ), fast response (<2   s) and excellent selectivity to glucose. The results suggest the potential implementation of LiNbO 3 as a sensing platform for electrochemical detection of biology reagents.