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A Novel Vanadosilicate with Hexadeca‐Coordinated Cs + Ions as a Highly Effective Cs + Remover
Author(s) -
Datta Shuvo Jit,
Moon Won Kyung,
Choi Do Young,
Hwang In Chul,
Yoon Kyung Byung
Publication year - 2014
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201402778
Subject(s) - seawater , radioactive waste , chemistry , microporous material , curium , ion , valence (chemistry) , caesium , radiochemistry , vanadium , radionuclide , inorganic chemistry , groundwater , americium , nuclear chemistry , plutonium , organic chemistry , physics , geology , nuclear physics , oceanography , geotechnical engineering
The effective removal of 137 Cs + ions from contaminated groundwater and seawater and from radioactive nuclear waste solutions is crucial for public health and for the continuous operation of nuclear power plants. Various 137 Cs + removers have been developed, but more effective 137 Cs + removers are still needed. A novel microporous vanadosilicate with mixed‐valence vanadium (V 4+ and V 5+ ) ions is now reported, which shows an excellent ability for Cs + capture and immobilization from groundwater, seawater, and nuclear waste solutions. This material is superior to other known materials in terms of selectivity, capacity, and kinetics, and at very low Cs + concentrations, it was found to be the most effective material for the removal of radioactive Cs + ions under the test conditions. This novel vanadosilicate also contains hexadeca‐coordinated Cs + ions, which corresponds to the highest coordination number ever described.