1-Cyclohexylethanol undergoes photocatalytic oxidation (PCO) using nanoparticles titanium dioxide (TiO2-P25) as a semiconductor photocatalyst in acetonitrile, under aerated conditions. It forms cyclohexylethanols by undergoing catalytic ring hydrogenation over several noble metal catalysts supported on charcoal, or on γ-alumina in supercritical carbon dioxide.