title: Fabrication of highly ordered Ta2O5 and Ta3N5 nanorod arrays by nanoimprinting and through-mask anodization.
abstract: Using highly ordered porous anodic alumina membrane fabricated with the aid of nanoimprinting as a mask, Ta2O5 nanorod array with uniform diameter, length, and distribution is grown in situ on a Ta substrate by through-mask anodization. The Ta2O5 nanorod array is further transformed into Ta3N5 nanorod array without damaging the nanorod structure by nitridation. Solar-driven photoelectrochemical water splitting with a maximum solar energy conversion efficiency of 0.36% is demonstrated with the Ta3N5 nanorod array after modifying the surface with cobalt-phosphate as a co-catalyst. The Ta2O5 and Ta3N5 nanorod arrays have potential applications in catalysis, photonics, UV photodetection and solar energy conversion.
authors: Department of Chemical System Engineering, The University of Tokyo, 7-3-1 Hongo, Tokyo 113-8656, Japan.
authors: Yanbo
authors: Y
authors: Li
authors: Keisuke
authors: K
authors: Nagato
authors: Jean-Jacques
authors: JJ
authors: Delaunay
authors: Jun
authors: J
authors: Kubota
authors: Kazunari
authors: K
authors: Domen