A robust photocatalyst of Au25@ZIF-8@TiO2-ReP with dual photoreductive sites to promote photoelectron utilization in H2O splitting to H2 and CO2 reduction to CO.

Sustaining long-term chemical or photochemical stability of a homogeneous molecular catalyst remains a significant challenge. We report a remarkable improvement of the activity and stability of a Au25@ZIF-8@TiO2-ReP catalyst via composition engineering with double redox active sites of Au25 NCs and a Re(i) complex for H2 and CO evolution to promote electron utilization.