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Fukasawa, Yuto*; Kaneko, Masashi; Nakashima, Satoru*
Journal of Radioanalytical and Nuclear Chemistry, 329(1), p.77 - 84, 2021/07
Times Cited Count：1 Percentile：16.35(Chemistry, Analytical)Density functional theory calculations were applied to understand the selectivity between Am
and Eu ions with the crown ethers type ligands. 18C6 is predicted to form the most stable complex with Eu and show the higher stability for Am over Eu, being consistent with previously reported Am/Eu selectivity. We modeled N- and S-donor complexes by using framework of 18C6 complex and analyzed the complexation Gibbs energies, indicating that 18C6 with N-donor atoms is suitable for both complexation and higher Am stability over Eu due to the stronger covalent interaction.
Konishi, Hiroyuki; Yamashita, Masato*; Uchida, Hitoshi*; Mizuki, Junichiro
Materials Transactions, 46(2), p.337 - 341, 2005/02
Times Cited Count：9 Percentile：57.32(Materials Science, Multidisciplinary)We have performed extended X-ray absorption fine structure (EXAFS) analysis for artificial Cr-goethite to elucidate the local structure around Cr in Cr-goethite. The spectra were obtained using synchrotron radiation X-rays at the Photon Factory in Tsukuba. The first shell contributions were isolated by Fourier filtering the EXAFS data, and the inverse Fourier transformed single-shell data were analyzed using curve fitting method. The results show that Cr is coordinated with (7
1) O
ions. The protective character of Cr-goethite protective rust layer on weathering steel can be interpreted in terms of the O coordination around Cr resulting in creation of negative fixed-charge in the Cr-goethite particles.
Tamada, Masao
Oyo Butsuri, 72(4), p.453 - 456, 2003/04
Radiation induced graft-polymerization is sophisticated technique which is capable of introducing aiming functions into conventional polymers. Especially, pre-irradiation method is available for industrialization owing to discrete processes of irradiation and grafting. The chelate adsorbents having high selectivity against metals were synthesized by the graft-polymerization. The recovery of uranium from seawater and the removal of toxic metals from wastewater were described as applicable examples of the graft adsorbents.
Kitatsuji, Yoshihiro; Aoyagi, Hisao; Yoshida, Zenko; Kihara, Sorin*
Analytica Chimica Acta, 387, p.181 - 187, 1999/00
Times Cited Count：11 Percentile：39.77(Chemistry, Analytical)no abstracts in English
Kitatsuji, Yoshihiro; Aoyagi, Hisao; Yoshida, Zenko; Kihara, Sorin*
Analytical Sciences, 14, p.67 - 70, 1998/02
Times Cited Count：11 Percentile：38.79(Chemistry, Analytical)no abstracts in English
Shimizu, Yuichi
J. Chem. Soc., Perkin Trans., 1, 0(9), p.1275 - 1278, 1997/00
no abstracts in English
Shimizu, Yuichi; Sugimoto, Shunichi*; Kawanishi, Shunichi; Suzuki, Nobutake
Laser Chem., 17, p.97 - 108, 1997/00
no abstracts in English
Shimizu, Yuichi; Kawanishi, Shunichi
Chemical Communications, 0(11), p.1333 - 1334, 1996/06
no abstracts in English
/N
O mixture in the presence of molecular sieve 5AShimizu, Yuichi; Nagai, Shiro
Applied Radiation and Isotopes, 41(5), p.457 - 461, 1990/00
no abstracts in English
Shimizu, Yuichi; Sugimoto, Shunichi; Kawanishi, Shunichi; Suzuki, Nobutake
Chemistry Letters, 1989, p.1539 - 1540, 1989/00
no abstracts in English
;
Talanta, 31(10A), p.789 - 797, 1984/00
no abstracts in English
Goto, Mitsuaki*; Yamaki, Tetsuya; Koshikawa, Hiroshi; Sawada, Shinichi; Kitamura, Akane; Higa, Mitsuru*
no journal, ,
We have exploited a grafting technique with heavy-ion beams to create ion exchange membranes for various practical applications such as fuel cells and water desalination systems. In this study, instead of styrene that is a common monomer, sodium styrene sulfonate (SSS) was for the first time employed for this so-called ion-track grafting. A 25 
m-thick poly(vinylidene fluoride) film was bombarded with 560 MeV 
Xe at a fluence of 3.0
10
or 1.010
ions/cm
, and subsequently immersed in a SSS grafting solution at 60
C. The charge density was estimated through the measurement of the membrane potential in an aqueous solution of potassium chloride. Our membranes exhibited higher charge density than the conventional or commercially-available samples probably due to track structures characteristic of the bombarding heavy ions.
