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

doi:10.1039/c5ra10907h

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 journal › Article › peer-review

30 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 language	English (US)
Pages (from-to)	75354-75359
Number of pages	6
Journal	RSC Advances
Volume	5
Issue number	92
DOIs	https://doi.org/10.1039/c5ra10907h
State	Published - Aug 28 2015

All Science Journal Classification (ASJC) codes

General Chemistry
General Chemical Engineering

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10.1039/c5ra10907h

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title = "Capture of radioactive cations from water using niobate nanomaterials with layered and tunnel structures",

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.",

author = "Jin Sun and Long Liu and Xiaoliang Zhao and Shuanglei Yang and Sridhar Komarneni and Dongjiang Yang",

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T1 - Capture of radioactive cations from water using niobate nanomaterials with layered and tunnel structures

AU - Sun, Jin

AU - Liu, Long

AU - Zhao, Xiaoliang

AU - Yang, Shuanglei

AU - Komarneni, Sridhar

AU - Yang, Dongjiang

PY - 2015/8/28

Y1 - 2015/8/28

N2 - 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.

AB - 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.

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

Abstract

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