Abstract
Here we report the fabrication of TiO nanorod by using glancing angle deposition and confirm for the first time the novel way to induce the visible response of TiO in photoelectrochemical water splitting, that is achieved by the utilizing of optical near-field (ONF) generated on nanorod structures. The ONF allows the so-called phonon-assisted excitation process, which excites TiO with sub-bandgap photons via phonon energy, and hence induce the visible response. This study suggest that this kind of nanostructured photocatalyst is promising material for hydrogen production in fuel cell application. Moreover, we believe that the present approach can be applied not only to photocatalyst but also other solar-harvesting materials. Copyright © (2011) by the Chemical and Biological Microsystems Society.