Layered titanate nanofibers as efficient adsorbents for removal of toxic radioactive and heavy metal ions from water
Data(s) |
2008
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Resumo |
Titanate nanofibers with two formulas, Na2Ti3O7 and Na1.5H0.5Ti3O7, respectively, exhibit ideal properties for removal of radioactive and heavy metal ions in wastewater, such as Sr2+ , Ba2+ (as substitute of 226Ra2+), and Pb2+ ions. These nanofibers can be fabricated readily by a reaction between titania and caustic soda and have structures in which TiO6 octahedra join each other to form layers with negative charges; the sodium cations exist within the interlayer regions and are exchangeable. They can selectively adsorb the bivalent radioactive ions and heavy metal ions from water through ion exchange process. More importantly, such sorption finally induces considerable deformation of the layer structure, resulting in permanent entrapment of the toxic bivalent cations in the fibers so that the toxic ions can be safely deposited. This study highlights that nanoparticles of inorganic ion exchangers with layered structure are potential materials for efficient removal of the toxic ions from contaminated water. |
Identificador | |
Publicador |
American Chemical Society |
Relação |
DOI:10.1021/jp803826g Ke, Xuebin, Liu, Hongwei, Sun, Yuhan, Wu, Dong, Xu, Yao, Yang, Dongjang, Zheng, Zhanfeng, & Zhu, Huai (2008) Layered titanate nanofibers as efficient adsorbents for removal of toxic radioactive and heavy metal ions from water. The Journal of Physical Chemistry Part C, 112(42), pp. 16275-16280. |
Fonte |
Faculty of Science and Technology |
Palavras-Chave | #030206 Solid State Chemistry #030300 MACROMOLECULAR AND MATERIALS CHEMISTRY #030302 Nanochemistry and Supramolecular Chemistry #030600 PHYSICAL CHEMISTRY (INCL. STRUCTURAL) #039901 Environmental Chemistry (incl. Atmospheric Chemistry) #Titanate, Nanofibre, Ion Exchange, Removal of Radioactive Ions, Adsorbent |
Tipo |
Journal Article |