International audienceTiO2-supported Rh(0) nanoparticles were easily prepared in one step without calcination by a room temperature impregnation of the inorganic support with a prestabilized colloidal Rh(0) suspension. They are highly active and reusable catalysts for the hydrogenation of aromatics and chloroanisole derivatives in neat water with TOFs up to 33000 h−1. The comparison with the analogous silica system Rh@SiO2 was discussed showing higher catalytic selectivities and activities with Rh(0) colloids supported on TiO2

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