Treballs Finals de Grau de Química, Facultat de Química, Universitat de Barcelona, Any: 2016, Tutors: Carlos M. Müller Jevenois i Núria Cinca LuisTitanium is a metallic material that has been studied for decades because of its interesting chemical, physical and biological features. More specifically, there have been numerous efforts in studying how the formation of ordered titanium oxide (TiO2) structures on its surface affects its properties (optical, catalytic, electrical, biocompatibility...). These structures can be obtained by several techniques, such as from anodization. This electrochemical technique allows obtaining a controlled oxide layer with the desired thickness and structure, and if certain parameters are well defined (electrolyte, potential applied, time...), ordered nanostructures. This range of structures can be obtained using a power supply controlled by a computer and a simple experimental system. The aim of this project is the electrochemical production of titanium oxide nanotubes and its characterization, as well as creating a hierarchical structure (macromicronano) to see which impact has the roughness of the substrate in the bioactivity and biocompatibility of this material.