Photoelectrochemical aptasensor for the sensitive and selective detection of kanamycin based on Au nanoparticle functionalized self-doped TiO2 nanotube arrays.

In this communication, a new photoelectrochemical aptasensor with Au nanoparticle functionalized self-doped TiO₂ nanotube arrays (Au/SD-TiO₂ NTs) as the core sensing unit and aptamers as the recognition unit was set up to accomplish the sensitive and selective detection of kanamycin with the lowest detection limit of 0.1 nM. [ABSTRACT FROM AUTHOR]