Free-standing arrays of BaTiO3 nanotubes for non-enzymatic glucose sensing & hydrophobic coating applications

BaTiO₃ nanostructures have been considered as a promising candidates in recent past for energy and biomedical sectors owing to their excellent physiochemical properties, such as high dielectric constant, excellent piezoelectric property, good biocompatibility, non-linear optical characteristics etc. Present study reveals on free-standing arrays of BaTiO₃ nanostructures, were fabricated by hydrothermal conversion of anodic TiO₂ nanotubes. Morphological and structural information of the BaTiO₃ nanotubes were done using FESEM and XRD studies. FESEM analysis revealed that the fabricated samples were having tubular morphology of average length and pore diameter of 4.63 μm and 290 nm respectively. Cubical perovskite crystalline phase of BaTiO₃ was confirmed through XRD analysis. The BaTiO₃ nanotube samples had shown a higher sensitivity of 44.43 μA mM⁻¹ cm⁻² and a faster response of 0.1 s for glucose detection. The fabricated BaTiO₃ nanotubes film also showed a higher contact angle of 122.70°. Therefore, our present fabrication on Titanium foil study emphasizes on arrays of BaTiO₃ nanotubes which will open up a new window in the development of various types of sensing and hydrophobic coating applications.