Fig. 1: Schematic illustration of the fabrication of different Pt nanomaterials.

Pt nanoparticles are formed in the absence of either POMs or MOFs, and POM-stabilized single Pt atom sites can be constructed in the restricted domain space of MOFs.

Pt nanoparticles are formed in the absence of either POMs or MOFs, and POM-stabilized single Pt atom sites can be constructed in the restricted domain space of MOFs.