Adsorptive removal of Sb(V) from water using a mesoporous Zr-based metal–organic framework

Sean Rangwani, Ashlee Howarth, Matthew R. DeStefano, Christos D. Malliakas, Ana E. Platero-Prats, Karena W. Chapman, Omar K. Farha*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

The adsorption and removal of Sb(OH)6 from water using the water stable Zr6-based MOF, NU-1000, is explored. The adsorption capacity and uptake time of Sb(OH)6 in NU-1000 is measured at varying concentrations to determine an overall maximum adsorption capacity of 260 mg of Sb(OH)6 per g of MOF, corresponding to 2.5 Sb(OH)6 per node of NU-1000 and exhibiting the highest adsorption capacity of any material reported to date for Sb(V) removal. Differential pair distribution function (dPDF) analysis of total X-ray scattering data reveals that Sb(OH)6 interacts in an η2μ2 fashion with the Zr6-node of NU-1000, and that as the amount of Sb(OH)6 adsorbed increases, the interaction between the analyte and the node becomes stronger. Post-adsorption characterization shows that NU-1000 remains stable throughout the adsorption process.

Original languageEnglish (US)
Pages (from-to)338-343
Number of pages6
JournalPolyhedron
Volume151
DOIs
StatePublished - Sep 1 2018

Keywords

  • Adsorbent
  • Antimony
  • Metal–organic framework
  • Nuclear
  • Wastewater

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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