Photocatalytic Conversion of CO₂ in Water over Layered Double Hydroxides

Have a bit of bubbly: Significant amounts of CO and O2 gas are evolved in the photocatalytic conversion of CO2 over layered double hydroxides (LDHs) in water (see scheme). A simple mixture of the same metal hydroxides, which has the same constituent elements of the LDH, shows low activity for CO and O2 evolution. Dissolved CO2 gas was shown to be the source of carbon in the reaction over LDHs in water.