Capture of radioactive cations from water using niobate nanomaterials with layered and tunnel structures

Jin Sun, Long Liu, Xiaoliang Zhao, Shuanglei Yang, Sridhar Komarneni, Dongjiang Yang

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

Niobates with one-dimensional (1D) morphology, layered KNb3O8 nanorods and tunnel structured Na2Nb2O6·H2O nanofibers, are fabricated readily by a reaction between niobium oxide and alkali hydroxides under hydrothermal conditions. They exhibit ideal properties for removal of radioactive cations such as Sr2+, Ba2+ (as simulant for 226Ra2+) and Cs+ ions from wastewater through an ion exchange process. Compared with the Na2Nb2O6·H2O nanofibers, the KNb3O8 nanorods displayed better performance for the irreversible entrapment of the toxic cations, particularly Ba2+ cations, due to the deformation of the layer structure. Besides, these 1D niobates are acid resistant with selective uptake of the radioactive cations in the presence of a large excess of K+ or Na+ ions.

Original languageEnglish (US)
Pages (from-to)75354-75359
Number of pages6
JournalRSC Advances
Volume5
Issue number92
DOIs
StatePublished - Aug 28 2015

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

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