Adsorption of molybdenum on Zr-based MOFs for potential application in the 99Mo/99mTc generator

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Abstract

The potential of the metal–organic framework UiO-66 and its functionalized derivatives for their utilization in the 99Mo/99mTc generator was assessed. Molybdenum adsorption experiments, structure characterization, molecular simulations and column experiments with molybdenum-99 were carried out. The results showed that the maximum molybdenum adsorption capacity achieved for UiO-66 was 335 mg g−1. Adsorption on the surface of the UiO-66 occurs via electrostatic interaction and DFT calculations verified the enhanced affinity between the adsorbents and the molybdenum ions by Zr-O-Mo coordination, anion-π as well as hydrogen bonds. In addition, the performance of a 99Mo/99mTc generator fabricated with Form-UiO-66 was evaluated. The results showed that adsorption was comparable with the experiments using non-active molybdenum and that the 99mTc elution efficiency of around 70% could be achieved without zirconium breakthrough.

Original languageEnglish
Article number151340
Number of pages9
JournalApplied Surface Science
Volume572
DOIs
Publication statusPublished - 2021

Keywords

  • Mo/Tc generator
  • Density functional theory
  • Interaction mechanism
  • Molybdenum adsorption
  • UiO-66

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