Entropy-Driven Mechanochemical Synthesis of Polymetallic Zeolitic Imidazolate Frameworks for CO2 Fixation

Wei Xu; Hao Chen; Kecheng Jie; Zhenzhen Yang; Tingting Li; Sheng Dai

doi:10.1002/anie.201900787

Entropy-Driven Mechanochemical Synthesis of Polymetallic Zeolitic Imidazolate Frameworks for CO₂ Fixation

Angew Chem Int Ed Engl. 2019 Apr 1;58(15):5018-5022. doi: 10.1002/anie.201900787. Epub 2019 Mar 6.

Authors

Wei Xu^{1

2}, Hao Chen², Kecheng Jie^{2

3}, Zhenzhen Yang², Tingting Li¹, Sheng Dai^{2

3}

Affiliations

¹ Research Center of Applied Solid State Chemistry, Chemistry Institute for Synthesis and Green Application, Ningbo University, Ningbo, Zhejiang, 315211, P. R. China.
² Department of Chemistry, University of Tennessee, Knoxville, TN, 37996, USA.
³ Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA.

PMID: 30746826
DOI: 10.1002/anie.201900787

Abstract

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 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 shows enhanced catalytic conversion of CO₂ into carbonate compared with ZIF-8 presumably a result of the synergistic effect of the five metal ions as Lewis acid in epoxide activation.

Keywords: carbon dioxide fixation; high-entropy materials; mechanochemistry; metal-organic frameworks; zeolitic imidazolate frameworks.

Abstract

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