A convenient method for the confined incorporation of highly active bimetallic PdCo nanocatalysts within a hollow and porous metal–organic framework (MOF) support is presented. Several chemical conversions occur simultaneously during the one-step low temperature pyrolysis of well-designed polystyrene@ZIF-67/Pd 2+ core–shell microspheres, where ZIF (zeolitic imidazolate framework) is a subclass of MOF: the polystyrene core is removed, resulting in a beneficial hollow and porous ZIF support; the ZIF-67 shell acts as a well-defined porous support and as a felicitous Co 2+ supplier for metal nanoparticle formation; and Pd 2+ and Co 2+ are reduced to form catalytically active bimetallic PdCo nanoparticles in the well-defined micropores, inducing the confined growth of PdCo nanoparticles with excellent dispersity.
Bibliographical noteFunding Information:
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIP) (no. NRF-2017R1A2B3007271).
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