Fig 1

(a) Schematic illustration for the electrostatic self-assembling of ultrathin Cu/Cd-MOF layers (Cu/Cd-MOL) by a facile pH-dependent Zeta potential adjustment. Atomic force microscopy images and thickness analysis of (b) Cu-MOL and (c) Cd-MOL. (d) Zeta potentials of Cu-MOL and Cd-MOL at different pH values. (e) Comparison of small-angle X-ray scattering patterns between Cu-MOL, Cd-MOL and Cu/Cd-MOL. (f) The determined band alignment (left), interfacial electric field (middle), and S-scheme charge flow (right) between Cd-MOL and Cu-MOL. Reproduced with permission from Ref. [8]. Copyright 2025, Wiley."

Fig 2

(a) Comparison of electrochemical impedance spectroscopy plots between MOF/MOF nanosheets composites and individual MOF nanosheet. (b) Normalized excited-state absorption kinetic curves probed at λ = 730 nm and the calculated average decay times. (c) Rates of visible-light-driven photocatalytic H2 evolution by sole MOF nanosheet and Cu/Cd-MOL with different Cu-MOL-to-Cd-MOL ratios. (d) Four cycles of photocatalytic H2 evolution catalyzed by Cu/Cd-MOL (1 : 1). (e) Comparison of H2 evolution rates and apparent quantum yield between the constructed MOF/MOF nanosheets heterojunction photocatalyst and the reported MOF-based systems. (f) Schematic photocatalytic H2 evolution by the ultrathin MOF/MOF nanosheets S-scheme heterojunction architecture. Reproduced with permission from Ref. [8]. Copyright 2025, Wiley."