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Nano-MOF+ Technique for Efficient Uranyl Remediation.

Lin XuDuo ZhangFuyin MaJiarong ZhangAfshin KhayambashiYawen CaiLanhua ChenCheng-Liang XiaoShu-Ao Wang
Published in: ACS applied materials & interfaces (2019)
The nano-MOF+ technique was employed by assembling nanoporous metal-organic framework (MOF) UiO-66 with nanoscale zero-valent iron (ZVI) particles to remove uranyl ions from aqueous solution under anoxic condition for the first time. The synthesized composite of Fe0@UiO-66-COOH exhibits a synergic effect between uranyl sorption by MOF host of UiO-66-COOH and chemical reduction by ZVI, reaching much elevated removal capacity and rate in comparison to those of the pristine UiO-66-COOH. The combined complexation and reduction mechanisms are further elucidated by the synchrotron radiation X-ray absorption near-edge structure analysis. This work highlights the bright future of the nano-MOF+ technique in the application of uranium removal, especially for the remediation of the uranium-contaminated subsurface environment.
Keyphrases
  • metal organic framework
  • high resolution
  • drinking water
  • quantum dots
  • current status
  • single molecule
  • aqueous solution
  • data analysis
  • contrast enhanced