Highly crystallized nanometer-sized zeolite a with large Cs adsorption capability for the decontamination of water.
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.
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; Faculty of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555 (Japan).
Nagy L
NL
Torad
Masanobu
M
Naito
Junichi
J
Tatami
Akira
A
Endo
Sin-Yen
SY
Leo
Shinsuke
S
Ishihara
Kevin C-W
KC
Wu
Toru
T
Wakihara
Yusuke
Y
Yamauchi
D000327:Adsorption; D002586:Cesium / Q000737:chemistry* / Q000302:isolation & purification*; D003460:Crystallization; D049329:Nanostructures / Q000737:chemistry*; D010316:Particle Size; D058525:Quartz Crystal Microbalance Techniques; D013499:Surface Properties; D014874:Water Pollutants, Chemical / Q000737:chemistry* / Q000302:isolation & purification; D018508:Water Purification / Q000379:methods*; D017641:Zeolites / Q000737:chemistry*
D014874:Water Pollutants, Chemical; D017641:Zeolites; D002586:Cesium
cesium; crystal growth; hollow structures; mesoporous materials; zeolites