Cu media constructed Z-scheme heterojunction of UiO-66-NH2/Cu2O/Cu for enhanced photocatalytic induction of CO2

Z-scheme heterojunction can effectively separate photo-generated carriers and enhance photocatalytic activity of CO 2 reduction. In this work, we report indirect Z-scheme heterojunction of UiO-66-NH 2 /Cu 2 O/Cu, which achieves highly CO 2 photocatalytic conversion to CO. Among these, UiO-66-NH 2 /Cu 2 O/Cu-0.39 (U/C/Cu-0.39) displays the best activity with a CO yield of 4.54 μmol·g −1 ·h −1 , which is 37.8 times higher than that for UiO-66-NH 2 and 50.4 times higher than that for Cu 2 O. Cu not only acts as the electron conductor of the indirect Z-scheme heterojunction to promote the charge carrier transmission, but also acts as the active site of CO 2 reduction. The increase of active sites and the CO 2 adsorption capacity results in the superior photocatalytic performances.