Well-Aligned TiO Nanotube Arrays with Ag Nanoparticles for Highly Efficient Detection of Fe Ion.

Nowadays, determination of the iron ions with high sensitivity and selectivity with novel methods becomes a matter of urgency for monitoring healthy body and environment. In this paper, for the first time, we present a set of high-performance TiO nanotube arrays which are quite sensitive to iron ions. Firstly, the anodic oxidation method was adopted to prepare ordered TiO nanotube arrays, followed by functionalized Ag nanoparticle deposition with the enhancement ability in iron ion sensing.