High-turnover visible-light photoreduction of CO2 by a Re(i) complex stabilized on dye-sensitized TiO2Electronic supplementary information (ESI) available: Experimental details, IR spectra and DRS of ReC/H-TiO2/Dye, plots of TN(CO) versus time for the hybrid systems and SEM images of the TiO2 sources. See DOI: 10.1039/c3cc49744e

Hybrid systems prepared by fixing a Re( i ) complex and a dye on three types of TiO 2 nanoparticles in two different ways commonly revealed persistent photocatalysis of the CO 2 reduction to CO with no levelling-off tendency under visible-light irradiation in DMF, giving a turnover number of ≥435. Higher photocatalytic CO 2 conversion to CO with a turnover number of 435 was achieved by the ternary dye-sensitized systems comprising a dye/TiO 2 /Re platform.