Simultaneous value-added utilization of photogenerated electrons and holes on Pd/TiO.

The biggest challenge facing the advancement of photocatalytic technology so far is how to achieve the simultaneous and efficient utilization of photogenerated electrons and holes for dual value-added chemicals. Here we show that Pd/TiO with electronic metal-support interaction realizes photocatalytic HO evolution coupled with furfural selective oxidation to furoic acid. We demonstrate that the electronic structure of Pd is modulated to form Pd active sites and upshifted d-band center via electronic metal-support interaction, enhancing O adsorption and HO evolution performance, and the photogenerated holes from TiO oxidize furfural undergoing the Aldehyde-Water Shift to furoic acid by sequential breaking of O-H and C-H bonds. The optimal Pd/TiO achieves HO and furoic acid evolution rates of 3672.31 and 4529.08 μM h with furfural conversion of 92.66% and furoic acid selectivity of 97.82%. Our work provides a promising approach for enhancing synergistic photosynthesis of dual value-added chemicals, thus advancing carbon neutrality goals.