LAUSR

A Zr-based dual-ligand MOFs with pre-installed Rh complex was employed for NADH regeneration in situand also used for immobilization of FDH in order to realize a highly efficient CO2 fixation system. Then, based on the detailed investigations into the photochemical and electrochemical properties, it is demonstrated that the introduction of the photosensitive ligands TCPP increased the catalytic active sites and improved photoelectric properties. Furthermore, the electron mediator Rh complex, anchored on the zirconium-based dual-ligand MOFs, enhanced the efficiency of electron transfer efficiency and facilitated the separation of photogenerated electrons and holes. Compared with UiO-66-NH2, Rh-H2TCPP-UiO-66-NH2 exhibits an optimized valence band structure and significantly improved photocatalytic activity for NAD+ reduction, resulting the synthesis of formic acid from CO2 increased from 150 µg/mL (UiO-66-NH2) to 254 µg/mL (Rh-H2TCPP-UiO-66-NH2). Moreover, the assembled photocatalyst-enzyme coupled system also allows facile recycling of expensive electron mediator, enzyme, and photocatalyst.