Study reveals how single-atom Cu-TiO₂ photocatalysts promote CO₂-to-CO conversion

Photocatalytic reduction of CO2 offers a promising approach to storing energy from intermittent sunlight in carbon-containing fuels and chemicals, thereby enabling carbon recycling.

Single-atom Cu catalysts have attracted attention because they enhance CO2 photoreduction.

However, the roles of single-atom active sites and adjacent atoms in these catalysts have not been well understood. ...