Visualizing the {110} surface structure of equilibrium-form ZIF-8 crystals by low-dose Cs-corrected TEM

Xiaocang Han, Wenqian Chen, Rui Su, Yuan Tian, Pan Liu, Pengfei Guan, Min Luo, Jiuhui Han, Xiaoxiao Cao, Ming Pan, Mingwei Chen

Research output: Contribution to journalArticlepeer-review

Abstract

The properties of zeolitic imidazolate framework (ZIF) crystals highly depend on the structures of the low-energy surfaces, such as {110} of ZIF-8. However, the atomic/molecular configurations of the ZIF-8 {110} surfaces remain debated. In this study, the near-atomic-scale characterization of {110} surfaces of ZIF-8 is conducted by low-dose aberration-corrected transmission electron microscopy (TEM). The real-space images with mitigated surface delocalization by minimized spherical aberration of TEM, together with the solvent corrected surface energy calculations, demonstrate that the {110} surfaces of ZIF-8 crystals with an equilibrium-form rhombic morphology have a zigzag-type termination. This study provides experimental evidence to clarify the debated structure of {110} ZIF-8 surfaces and has important implications in understanding the crystal growth and surface related properties of ZIF-8.

Original languageEnglish
Pages (from-to)13215-13219
Number of pages5
JournalNanoscale
Volume13
Issue number31
DOIs
Publication statusPublished - 2021 Aug 21

ASJC Scopus subject areas

  • Materials Science(all)

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