Fig. 1: Schematic illustration and structural characterization of the SA/MOF membranes.
From: Metal-organic framework membranes with single-atomic centers for photocatalytic CO2 and O2 reduction
a Humidified gases (e.g., CO2, O2) can be fed through the gas-permeable MOF/PTFE membranes and photocatalytically reduced to value-added chemicals (e.g., HCOOH and H2O2) under visible light irradiation and ambient conditions. b With controllable defect-engineering, specific metal SAs (e.g., Ir and Pd) can be precisely anchored on the edges of the Zr6O4(OH)4(–CO2)12−x octahedral to act as programable catalytic centers for catalyzing different reactions, such as photocatalytic CO2-to-HCOOH and O2-to-H2O2 conversion. The open and interconnected MOF pores serve as the nanoreactors facilitating the diffusion and conversion of gas reactants. c SEM image for Ir1/A-aUiO particles. d HAADF-STEM image and corresponding EDS maps for Ir1/A-aUiO particles. e, f AC-HAADF-STEM images for e Ir1/A-aUiO and f Pd1/A-aUiO, indicating the atomic dispersion of metal species in A-aUiO matrixes. g, h SEM image (g) and corresponding EDS mapping (h) for the cross section of Ir1/A-aUiO/PTFE membranes.
