TiO2/SnO2 nanotubes were successfully grown via electrochemical anodization of Ti-Sn 1 mu m-thick films deposited onto titanium foil by means of rf sputtering. Two different viscous electrolytes, containing 1 wt% NH4F, were used: ethylene glycol (EG electrolyte), and glycerol + ethylene glycol (GL/EG electrolyte). Self-organized nanotubes prepared in the EG electrolyte exhibited very smooth walls, smaller diameter and were much longer than those obtained in GL/EG. XRD analysis revealed the mixture of anatase with smaller amount of rutile TiO2, however, in the case of EG electrolyte additional phases from the Sn-O system were observed. Contact angle measurements indicated that all the samples were hydrophobic as-prepared and transformed into superhydrophilic upon illumination. Solar-to-hydrogen efficiency was improved by incorporation of Sn up to about 2% which could be attributed to higher photocurrent density reaching 0.2 mu A cm(-2), longer recombination time 5-15 s and more negative flat band potential V-FB = -0.5; -0.6 V. Copyright (C) 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.