A study of the change in hydrogen absorption of titanium due to ion irradiation is presented. Titanium slices were irradiated at room temperature with 700 and 1500 keV H ions and annealed at 300, 450 and 600 degrees C in a hydrogen atmosphere in order to study the absorption of hydrogen into the material. ERDA measurements and X-ray diffraction analysis show an improvement in hydrogen absorption relative to those samples that were not irradiated previously to hydrogenation. A tendency of an increment of the surface hydrogen storage density with diminishing the irradiation energy was also observed. (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.