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Journal Articles

Nanoscale relaxation in "Water-in-Salt" and "Water-in-Bisalt" electrolytes

Gonzal$'e$z, M. A.*; Borodin, O.*; Kofu, Maiko; Shibata, Kaoru; Yamada, Takeshi*; Yamamuro, Osamu*; Xu, K.*; Price, D. L.*; Saboungi, M.-L.*

Journal of Physical Chemistry Letters (Internet), 11(17), p.7279 - 7284, 2020/09

https://doi.org/10.1021/acs.jpclett.0c01765
 Times Cited Count：17 Percentile：78.45(Chemistry, Physical)

Journal Articles

Swelling pressure and leaching behaviors of synthetic bituminized waste products with various salt contents under a constant-volume condition

Irisawa, Keita; Meguro, Yoshihiro

Journal of Nuclear Science and Technology, 54(3), p.365 - 372, 2017/03

https://doi.org/10.1080/00223131.2016.1273143
 Times Cited Count：2 Percentile：19.37(Nuclear Science & Technology)

Journal Articles

Radiolysis of boiling water

Yang, S.*; Katsumura, Yosuke*; Yamashita, Shinichi*; Matsuura, Chihiro*; Hiroishi, Daisuke*; Lertnaisat, P.*; Taguchi, Mitsumasa

Radiation Physics and Chemistry, 123, p.14 - 19, 2016/06

https://doi.org/10.1016/j.radphyschem.2016.02.008
 Times Cited Count：2 Percentile：19.57(Chemistry, Physical)

$$gamma$$-radiolysis of boiling water has been investigated. The G-value of H$$_{2}$$ evolution was found to be very sensitive to the purity of water. In high-purity water, both H$$_{2}$$ and O$$_{2}$$ gases were formed in the stoichiometric ratio of 2:1; a negligible amount of H$$_{2}$$O$$_{2}$$ remained in the liquid phase. The G-values of H$$_{2}$$ and O$$_{2}$$ gas evolution depend on the dose rate: lower dose rates produce larger yields. To clarify the importance of the interface between liquid and gas phase for gas evolution, the gas evolution under Ar gas bubbling was measured. A large amount of H$$_{2}$$ was detected, similar to the radiolysis of boiling water. The evolution of gas was enhanced in a 0.5 M NaCl aqueous solution. Deterministic chemical kinetics simulations elucidated the mechanism of radiolysis in boiling water.

Journal Articles

Selenium oxyanions; Highly selective uptake by a novel anion exchanger

Kozai, Naofumi; Onuki, Toshihiko; Komarneni, S.*

Journal of Materials Chemistry, 17(12), p.2993 - 2996, 2002/12

Here we report the extremely high and selective uptake of selenium oxyanions by a novel exchanger, Ni$$_{1-x}$$Zn$$_{2x}$$(OH)$$_{2}$$(OCOCH$$_{3}$$)$$_{2x}$$・nH$$_{2}$$O that has brucite-type hydroxide layers with OCOCH$$_{3}$$ anions in the interlayers. This Ni-Zn basic salt exhibited very high selectivity for Se(IV) (Kd = 9.0x10$$^{4}$$ ml/g with an initial Se(IV) concentration of 1x10$$^{-4}$$ M) in the presence of 0.1M Cl$$^{-}$$ solution while the well known anionic clay, Mg$$_{2}$$Al(OH)$$_{6}$$NO$$_{3}$$・nH$$_{2}$$O showed a Kd of 6.0x10$$^{3}$$ ml/g under the same conditions. The uptake of Se(IV) on the Ni-Zn basic salt was found to be irreversible when treated with solutions containing 1N Cl$$^{-}$$, 1N NO$$_{3}$$$$^{-}$$, or 1N PO$$_{4}$$$$^{3-}$$, while the Se(IV) sorbed on anionic clay was easily desorbed in a 1M Cl$$^{-}$$ solution. This novel exchanger also showed high Kd (2.6$$times$$10$$^{3}$$ ml/g at an initial Se concentration of 1$$times$$10$$^{-4}$$ M) for Se(VI) and therefore it is expected to be useful for decontamination and removal of selenium oxyanions from contaminated water.

Journal Articles

Oxidation of zircaloy cladding in air

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Journal of Nuclear Materials, 140, p.32 - 43, 1986/00

https://doi.org/10.1016/0022-3115(86)90194-7
 Times Cited Count：14 Percentile：79.15(Materials Science, Multidisciplinary)

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