Ta-doped TiO2 nanotubes for enhanced solar-light photoelectrochemical water splitting

Chemistry. 2013 May 3;19(19):5841-4. doi: 10.1002/chem.201203544. Epub 2013 Mar 20.

Abstract

A little dopey: Ta-doped titania (TiO2) nanotube (NT) arrays can be grown by electrochemical anodization onto low-Ta-concentration (0.03-0.4 at % Ta) Ti-Ta alloys. Under optimized conditions (0.1 at % Ta, annealing at 650 °C and 7 μm thickness), Ta-doped TiO2 NT arrays show a significantly enhanced activity in photoelectrochemical water splitting under simulated sunlight conditions (see figure).