A new strategy for the controllable growth of MOF@PBA architectures

Presently, it is a substantial challenge to fabricate ordered multilevel nanostructures by simple methods. Herein, we successfully combined 1D MOF ultrathin nanobelts with PBA nanocubes via an in-situ cation exchange strategy to synthesize series 3D multilevel MOF@PBA hybrid materials (Ni-MIL-77@PBA, NiCo-MOF@PBA, NiMn-MOF@PBA, NiCoMn-MOF@PBA). In addition to these improvements, we extended the in-situ cation exchange strategy to 2D MOF nanosheets assembles and 3D MOF polyhedra, which combine perfectly with PBA nanocubes to form new MOF@PBA architectures. The obtained MOF@PBA architectures exhibit efficient catalytic oxygen evolution ability under strong alkaline conditions. Therefore, the synthesis strategy of this study opens up a new way to construct of other modified hybrid materials, and has a broad application prospects.