Nickel hydroxide nanoparticle activated semi-metallic TiO₂ nanotube arrays for non-enzymatic glucose sensing

Semi-metallic TiO₂ nanotube arrays (TiO_xC_y NTs) have been decorated uniformly with Ni(OH)₂ nanoparticles without the aid of a polymer binder. The resulting hybrid nanotube arrays exhibit excellent catalytic activity towards non-enzymatic glucose electro-oxidation. The anodic current density of the glucose oxidation is significantly improved compared with traditional TiO₂ nanotubes decorated with Ni(OH)₂. Moreover, the Ni(OH)₂/TiO _xC_y NT-based electrode shows a fast response, high sensitivity, wide linear range, good selectivity and stability towards glucose electro-oxidation, and thus provides a promising and cost-effective sensing platform for non-enzymatic glucose detection. Sensing glucose: Semi-metallic TiO₂ nanotube arrays (TiO_xC_y NTs) have been decorated uniformly with Ni(OH)₂ nanoparticles without the aid of a polymer binder. The resulting hybrid nanotube arrays exhibit excellent catalytic activity towards non-enzymatic glucose electro-oxidation. The anodic current density for the oxidation of glucose is significantly improved in comparison with traditional TiO₂ nanotubes decorated with Ni(OH)₂ (see figure).