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Journal Articles

Highly water-permeable WO$$_{3}$$-containing porous hydrogel via freeze-crosslinking for efficiency and salt-robust dye Decolorization

Sugita, Tsuyoshi; Ueda, Yuki; Nakabe, Rintaro; Mori, Masanobu*; Nankawa, Takuya; Sekine, Yurina

Journal of Photochemistry and Photobiology A; Chemistry, 473, p.116773_1 - 116773_9, 2026/04

https://doi.org/10.1016/j.jphotochem.2025.116773
 Times Cited Count：0 Percentile：0.00(Chemistry, Physical)

We developed a WO$$_{3}$$-embedded hydrogel (WFG) by freeze-cross-linking that retained high activity even in the presence of coexisting salts. Confocal laser scanning microscope revealed interconnected channels < 200 $$mu$$m. ensuring good water permeability, and contrast-matching small-angle neutron scattering showed that the secondary particle size of embedded WO$$_{3}$$ (~300 nm) matched that in aqueous suspension. Under visible-light irradiation, WFG decolorized indigo carmine (INC) 1.5-fold increase in rate than suspended WO$$_{3}$$ and 3.7-fold increase in rate than a WO$$_{3}$$-coated glass plate. Coexisting salts (NaNO$$_{3}$$, NaCl, Na$$_{2}$$SO$$_{4}$$, NaH$$_{2}$$PO$$_{4}$$) altered the decolorization efficiency; NaNO$$_{3}$$ and Na$$_{2}$$SO$$_{4}$$ enhanced, whereas Cl$$^{-}$$ and H$$_{2}$$PO$$_{4}$$$$^{-}$$ suppressed the reaction, indicating that ionic strength and anion-species affect contact efficiency and charge transfer.

Journal Articles

Fabrication and characterization of C-doped anatase TiO$$_{2}$$ photocatalysts

Choi, Y.; Umebayashi, Tsutomu; Yoshikawa, Masahito

Journal of Materials Science, 39(5), p.1837 - 1839, 2004/03

https://doi.org/10.1023/B:JMSC.0000016198.73153.31
 Times Cited Count：236 Percentile：97.74(Materials Science, Multidisciplinary)

Carbon (C)-doped anatase TiO$$_{2}$$ photocatalysts have been prepared by the oxidative annealing of TiC powders at 623 K for 50-100 hrs. From XRD and XPS analysis, it is clear that C is incorporated into O site of the TiO$$_{2}$$ lattice. Diffuse reflectance spectroscopy (DRS) showed that the optical absorption edge of the C-doped anatase TiO$$_{2}$$ shifted to lower energy compared with that of pure anatase TiO$$_{2}$$. The decomposition of methylene blue (MB) adsorbed on the C-doped sample was observed under a visible light range of 420-500 nm. We conclude that substitution of C for O in the TiO$$_{2}$$ leads to a photocatalytic decomposition of MB under visible light irradiation.

Journal Articles

Improved confinement of neon plasma inside a high-$$T_{c}$$ superconducting tube

Yamauchi, Toshihiko; Matsuzawa, Hidenori*; Mikami, Koji*; Ishikawa, Junichi*

Japanese Journal of Applied Physics, Part 1, 41(9), p.5799 - 5800, 2002/09

https://doi.org/10.1143/JJAP.41.5799
 Times Cited Count：3 Percentile：15.28(Physics, Applied)

This paper describes the experimental result of the interaction between a high-Tc superconductor and charged particles (plasma). This study is expected for the interaction between the charged particle and superconductor in the group, high-Tc superconducting wiggler for electron beam of FEL (collaboration with Prof.Matsuzawa) and high-Tc superconducting tube for beam guiding published in the journal "Nature".

JAEA Reports

Development of multi-channel optical-fiber feed through for ITER

Sugie, Tatsuo; ; Kasai, Satoshi

JAERI-Tech 98-036, 31 Pages, 1998/08

JAERI-Tech-98-036.pdf:2.5MB

no abstracts in English

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