Fabrication of porous cubic architecture of ZnO using Zn-terephthalate MOFs with characteristic microstructures

Yu Kimitsuka, Eiji Hosono, Shintaro Ueno, Haoshen Zhou, Shinobu Fujihara

Research output: Contribution to journalArticle

41 Citations (Scopus)

Abstract

A method for synthesizing porous cubic-shaped ZnO particles a few tens of micrometers in size is described on the basis of a pyrolytic conversion of Zn-terephthalate metal-organic frameworks (MOFs). MOF crystals were initially grown in solutions containing Zn(NO3)2·6H 2O and terephthalic acid as solutes and N,N-dimethylformamide (DMF) or N,N-diethylformamide (DEF) as a solvent under a solvothermal condition. It was the key to controlling the microstructure of MOF cuboids for their use as an intermediate compound for ZnO. Actually, many cracks were formed and hence the cubic microstructure was somewhat destroyed in the pyrolytic conversion from dense MOF crystals (grown in the DMF solution) to ZnO. In contrast, mesocrystal-like MOF cuboids (grown in the DEF solution) could maintain their shape during the pyrolysis because of the relaxation against a MOF-to-ZnO volume change. The resultant ZnO with a highly porous cubic structure showed intense visible photoluminescence upon irradiation with ultraviolet light.

Original languageEnglish
Pages (from-to)14028-14033
Number of pages6
JournalInorganic Chemistry
Volume52
Issue number24
DOIs
Publication statusPublished - 2013 Dec 16

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry

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