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

作者：Rangwani Sean; Howarth Ashlee J; DeStefano Matthew R; Malliakas Christos D; Platero Prats Ana E; Chapman Karena W; Farha Omar K^*

来源：Polyhedron, 2018, 151: 338-343.

DOI：10.1016/j.poly.2018.05.021

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

The adsorption and removal of Sb(OH)(6)(-) from water using the water stable Zr-6-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 eta(2)mu(2) fashion with the Zr-6-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.

• 出版日期2018-9-1
• 单位西北大学