Entropy‐Driven Mechanochemical Synthesis of Polymetallic Zeolitic Imidazolate Frameworks

High‐entropy materials refer to a kind of materials in which five or more metal species were incorporated deliberately into a single lattice with random occupancy. Up to now, such a concept has been only restricted to hard materials such as high‐entropy alloys and ceramics. Herein we report the successful synthesis of hybrid high‐entropy materials—polymetallic zeolitic imidazolate framework (also named as high‐entropy zeolitic imidazolate framework, HE‐ZIF) via entropy‐driven room temperature mechanochemistry. HE‐ZIF contains five metals including Zn(II), Co(II), Cd(II), Ni(II) and Cu(II) which are dispersed in the ZIF structure randomly. Moreover, HE‐ZIF showed enhanced catalytic conversion of CO2 to carbonate compared with ZIF‐8 presumably due to the synergistic effect of the five metal ions as Lewis acid in epoxide activation.

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