TiO₂ nanotube arrays (TNTs) are interesting photoanodes with potential use in photoelectrochemical applications, such as hydrogen production and degradation of water pollutants, due to its low fabrication cost, chemical stability, high specific surface area, photosensitivity, and catalytic potential. Moreover, high ordered nanotubular structures can be obtained through anodization process of a titanium film. This 1-D geometry facilitates the unidirectional transport of photogenerated charge carriers, diminishing the recombination of electron-hole pairs. However, the major drawback for the practical use of TiO₂ is its wide band gap (3.2 and 3.0 eV for anatase and rutile phase, respectively), making it only sensitive to UV light, which carries about 4% power of sunlight. For expanding the sensitivity of the TiO₂ nanotubes towards the visible region, which is the 45% of the solar spectrum, several strategies have been carried out such as surface modification with narrow band gap semiconductors. Moreover, the methodology used to synthesize the semiconductor on the TNTs has a great impact in the photoelectrochemical performance of the photoelectrode. For this reason, in this work the modification of TNTs with RuO₂ employing a hybrid strategy is proposed, consisting in the electrodeposition of Ru and its subsequent thermal oxidation. The characterization of the semiconductor, electrical and optical properties, as well as photoelectrochemical evaluation of the TNTs-RuO₂ are in progress.