Electrocatalytic Hydrogenation of Oxalic Acid to Glyoxylic Acid on a Self-Organized TiO<sub>2</sub> Nanotube Electrode

A study for electrocatalytic hydrogenation of oxalic acid has been reported using the self-organized TiO 2 nanotube electrode prepared by anodic oxidation method. The prepared electrode was characterized by SEM and XPS. The electrocatalytic activity of the TiO 2 nanotube electrode was evaluated by CV and galvanostatic electrolysis. The CV studies and electrochemical experiments showed that TiO 2 nanotube electrode exhibited high electrocatalytic activity. In addition, the surface of TiO 2 nanotube electrode developed into a periodic lattice of nanopores after electrolysis, which makes it find a potential application as electrocatalysts.