Highly Crystallized Nanometer‐Sized Zeolite A with Large Cs Adsorption Capability for the Decontamination of Water |
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| Authors: | Nagy L Torad Dr Masanobu Naito Dr Junichi Tatami Dr Akira Endo Sin‐Yen Leo Dr Shinsuke Ishihara Dr Kevin C‐W Wu Dr Toru Wakihara Dr Yusuke Yamauchi |
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| Institution: | 1. World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA) & Environmental Remediation Materials Unit, National Institute for Materials Science (NIMS), 1‐1 Namiki, Tsukuba, Ibaraki 305‐0044 (Japan) http://www.yamauchi‐labo.com;2. Faculty of Science and Engineering, Waseda University, 3‐4‐1 Okubo, Shinjuku, Tokyo 169‐8555 (Japan);3. Graduate School of Environmental and Information Sciences, Yokohama National University, 79‐7 Tokiwadai, Hodogayaku, Yokohama 240‐8501 (Japan);4. National Institute of Advanced Industrial Science and Technology (AIST), 1‐1‐1 Higashi, Tsukuba Central 5, Tsukuba, Ibaraki 305‐8565 (Japan);5. Department of Chemical Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei 10617 (Taiwan);6. Present Address: Department of Chemical System Engineering, The University of Tokyo, 7‐3‐1 Hongo, Bunkyo, Tokyo 113‐8656 (Japan) |
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| Abstract: | Nanometer‐sized zeolite A with a large cesium (Cs) uptake capability is prepared through a simple post‐milling recrystallization method. This method is suitable for producing nanometer‐sized zeolite in large scale, as additional organic compounds are not needed to control zeolite nucleation and crystal growth. Herein, we perform a quartz crystal microbalance (QCM) study to evaluate the uptake ability of Cs ions by zeolite, to the best of our knowledge, for the first time. In comparison to micrometer‐sized zeolite A, nanometer‐sized zeolite A can rapidly accommodate a larger amount of Cs ions into the zeolite crystal structure, owing to its high external surface area. Nanometer‐sized zeolite is a promising candidate for the removal of radioactive Cs ions from polluted water. Our QCM study on Cs adsorption uptake behavior provides the information of adsorption kinetics (e.g., adsorption amounts and rates). This technique is applicable to other zeolites, which will be highly valuable for further consideration of radioactive Cs removal in the future. |
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| Keywords: | cesium crystal growth hollow structures mesoporous materials zeolites |
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