Synthesis and gas adsorption properties of mesoporous silica-NH2-MIL-53(Al) core-shell spheres

Sara Sorribas, Beatriz Zornoza, Pablo Serra-Crespo, Jorge Gascon, Freek Kapteijn, Carlos Téllez, Joaquín Coronas*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

Abstract

Ordered mesoporous silica-NH2-MIL-53(Al) core-shell spheres of about 4 μm in diameter have been synthesized by seeding the corresponding mesoporous silica spheres (MSSs) with crystals of NH2-MIL-53(Al) and subsequent secondary crystal growth into a MOF shell. The morphology of the particles was analyzed by SEM, while TGA, EDX and XRD characterizations gave information on the composition and structure of this material and the activation of the MOF. N2 adsorption analysis revealed that the NH2-MIL-53(Al) shell controlled the access of guest molecules into the hydrophilic silica mesoporous structure, while the breathing behavior of the microporous NH2-MIL-53(Al) shell was confirmed by CO2 adsorption isotherms.

Original languageEnglish (US)
Pages (from-to)116-121
Number of pages6
JournalMicroporous and Mesoporous Materials
Volume225
DOIs
StatePublished - May 1 2016

Keywords

  • Adsorption
  • Core-shell
  • Metal-organic framework
  • NH-MIL-53
  • Ordered mesoporous silica

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials

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