Thermal treatment induced transition from Zn3 (OH)2 (BDC) 2 (MOF-69c) to Zn4 O(BDC) 3 (MOF-5)

Jianwei Ren, Dave E.C. Rogers, Tshiamo Segakweng, Henrietta W. Langmia, Brian C. North, Mkhulu Mathe, Dmitri Bessarabov

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12 Citations (Scopus)

Abstract

A simple thermal treatment induced transition from Zn3 (OH) 2 (BDC)2 (MOF-69c) to Zn4 O(BDC)3 (MOF-5) is reported. Phase crystallinity, pore characteristics and hydrogen storage capacities of the resulting crystals were investigated. It is shown that the structural transition from Zn3 (OH)2 (BDC) 2 (MOF-69c) to Zn4 O(BDC)3 (MOF-5) could be induced by simply employing the optimal thermal treatment conditions of 200 8 C for 48 h in open air. The resultant relatively lower specific surface area of MOF-5 crystals compared to MOF-69c was in agreement with the increased pore diameter and decreased hydrogen storage capacity at 1 bar and 77 K.

Original languageEnglish
Pages (from-to)89-93
Number of pages5
JournalInternational Journal of Materials Research
Volume105
Issue number1
DOIs
Publication statusPublished - Jan 2014
Externally publishedYes

Keywords

  • Hydrogen adsorption
  • MOF-5
  • MOF-69c
  • Structural transition

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Metals and Alloys
  • Materials Chemistry

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