Defect formation in metal–organic frameworks initiated by the crystal growth-rate and effect on catalytic performance

Somboon Chaemchuen, Zhixiong Luo, Kui Zhou, Bibimaryam Mousavi, Suphot Phatanasri, Mietek Jaroniec, Francis Verpoort

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

The defect formation in metal–organic frameworks (MOFs) initiated by the crystal growth-rate of different synthesis procedures affects the structure, morphology and other properties of MOFs such as particle shape, gas adsorption capacity and specifically catalytic performance etc. Although the design of defect structures and the defect structures itself are well known, comparatively little is known regarding defect creation introduced by the synthesis procedure (different from mixed-linker approach, the use of acid modulators, post-synthetic treatment, etc.) and characterization of the resulting naturally occurring abnormalities (defects) in the material. Moreover, high performance of MOFs in various catalytic reactions can be correlated to the higher amount of defect structures because defects can possibly exhibit acid and/or basic properties. While studies of MOF crystallinity confirmed that for a given type of MOF different synthesis methods generate samples of similar crystal structures, their morphologies are often different due to the differences in the crystallization rates associated with these methods.

Original languageEnglish
Pages (from-to)84-91
Number of pages8
JournalJournal of Catalysis
Volume354
DOIs
Publication statusPublished - 1 Oct 2017

Keywords

  • Active site
  • Catalyst
  • Defect structure
  • Metal-organic framework
  • Un-coordinated site

ASJC Scopus subject areas

  • Catalysis
  • Physical and Theoretical Chemistry

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