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JAEA Reports

Development of new molybdenum adsorbent

Kimura, Akihiro; Tanimoto, Masataka; Ishida, Takuya; Tsuchiya, Kunihiko; Hasegawa, Yoshio*; Hishinuma, Yukio*; Suzuki, Masashi*

JAEA-Technology 2011-012, 17 Pages, 2011/06

JAEA-Technology-2011-012.pdf:1.72MBJP, 2010-263801   Patent publication (In Japanese)

PZC (Poly-Zirconium Compound) was developed as adsorbent of molybdenum for $$^{99}$$Mo-$$^{rm 99m}$$Tc generator. However, PZC has some faults. So, new adsorbent based on titanium (PTC), was developed for getting rid of faults. This time, $$^{99}$$Mo adsorption and $$^{rm 99m}$$Tc elution tests with PZC and PTC were carried out. As a result, the $$^{99}$$Mo adsorption performance of the PTC was lower than PZC, on the other hand, $$^{rm 99m}$$Tc elution performance of the PTC was higher than PZC.

Journal Articles

Application of PZC to $$^{188}$$W/$$^{188}$$Re generators

Matsuoka, Hiromitsu; Hashimoto, Kazuyuki; Hishinuma, Yukio*; Ishikawa, Koji*; Terunuma, Hitoshi*; Tatenuma, Katsuyoshi*; Uchida, Shoji*

Journal of Nuclear and Radiochemical Sciences, 6(3), p.189 - 191, 2005/12

Applicability of Mo adsorbent PZC(Poly Zirconium Compound) for $$^{188}$$W/$$^{188}$$Re generator was investigated. Long term stability of adsorption of $$^{188}$$W to the PZC column, elution of $$^{188}$$Re from PZC column, desorption of $$^{188W}$$ from PZC column, and labeling of Hydroxyethylidene Diphosphonic Acid(HEDP) and Mercaptoacetyltriglycine(MAG3) with $$^{188}$$Re eluted from PZC column were tested. The PZC generator gave reproducible $$^{188}$$Re elution yields with low $$^{188}$$W parent breakthrough for a long period of time(about 5 months), that is the $$^{188}$$W/$$^{188}$$Re generator using PZC has a potential for practical use.

Journal Articles

Effects of neutron irradiation on tensile properties in high-purity Fe-(9-50)Cr and Fe-50Cr-xW alloys

Wakai, Eiichi; Hishinuma, Akimichi; Miwa, Yukio; Ouchi, Asao*; Isozaki, Seiichi*; Takaki, Seiichi*; Abiko, Kenji*

Materials Transactions, JIM, 41(1), p.136 - 140, 2000/01

no abstracts in English

Journal Articles

Development of a miniaturized hour-glass shaped fatigue specimen

Miwa, Yukio; Jitsukawa, Shiro; Hishinuma, Akimichi

Journal of Nuclear Materials, 258-263(PT.A), p.457 - 461, 1998/00

 Times Cited Count:14 Percentile:74.48(Materials Science, Multidisciplinary)

no abstracts in English

Journal Articles

Phase transformation of high-purity Fe-50Cr-xW alloys during Fe$$^{+}$$ ion irradiation

Wakai, Eiichi; Hishinuma, Akimichi; Abe, Hiroaki; Miwa, Yukio; Takaki, Seiichi*; Abiko, Kenji*

Proc of Ultra-High-Purity Metallic-Base Materials (UHPM-98), p.35 - 45, 1998/00

no abstracts in English

Journal Articles

Concept and neutron-field characteristics of ESNIT

Noda, Kenji; Oyama, Yukio; ; Maekawa, Hiroshi; Hishinuma, Akimichi

Journal of Nuclear Materials, 174, p.319 - 326, 1990/00

 Times Cited Count:13 Percentile:76.9(Materials Science, Multidisciplinary)

no abstracts in English

Oral presentation

Application of PZC to $$^{188}$$W/$$^{188}$$Re generator

Hashimoto, Kazuyuki; Hishinuma, Yukio*; Ishikawa, Koji*; Terunuma, Hitoshi*; Tatenuma, Katsuyoshi*; Uchida, Shoji*; Matsuoka, Hiromitsu

no journal, , 

Applicability of Mo adsorbent PZC(Poly Zirconium Compound) for $$^{188}$$W/$$^{188}$$Re generator was investigated. Up to the present, long term stability of adsorption of $$^{188}$$W to the PZC column, elution of $$^{188}$$Re from PZC column, desorption of $$^{188}$$W from PZC column, and labeling of Hydroxyethylidene Diphosphonic Acid (HEDP) and Mercaptoacetyltriglycine (MAG3) with $$^{188}$$Re eluted from PZC column were tested and the results were compared with that of $$^{188}$$Re eluted from alumina column.

Oral presentation

Study on $$^{99}$$Mo production method with irradiation of circulating Mo solution, 1; Results of cold tests (preliminary tests)

Inaba, Yoshitomo; Ishikawa, Koji*; Ishida, Takuya; Ishitsuka, Etsuo; Kurosawa, Kiyoko*; Hishinuma, Yukio*; Tatenuma, Katsuyoshi*

no journal, , 

The circulating solution irradiation method is a new production method of $$^{99}$$Mo, which is the parent nuclide of $$^{99m}$$Tc used as medical diagnosis medicine. In order to realize this method, compatibility between molybdenum solutions and structural materials, etc. were investigated. As a result, it was found that the potassium molybdate solution have good characteristics as an irradiation target.

Oral presentation

Structure and property of titanium dioxide nanosheet

Yamaguchi, Daisuke; Koizumi, Satoshi; Hasegawa, Yoshio*; Hishinuma, Yukio*; Suzuki, Masashi*; Kodama, Hiroto*; Onuma, Masato*; Oba, Yojiro*

no journal, , 

The structure of nitrogen (N)-doped titanium dioxide (TiO$$_2$$), which exhibits an improved photo-catalytic property, was investigated by small-angle neutron (SANS) and X-ray scattering (SAXS) methods. The N-doped TiO$$_2$$ nanosheet showed a SANS profile, of which q-dependence is nearly identical to that of undoped TiO$$_2$$ nanosheet, however, of which intensity is three times as large as that of undoped TiO$$_2$$ nanosheet. As for the SAXS measurements, hardly any difference was observed between undoped TiO$$_2$$ nanosheet and N-doped one. For N-doped nanosheet, a core-shell structure where TiO$$_2$$ particles locate at the center and N atoms surround the surface of TiO$$_2$$ particles was deduced from the analysis of those obtained SANS and SAXS profiles by taking account of the difference in scattering contrast between neutron and X-ray for each component, i.e., Ti, O, and N atoms.

Oral presentation

Syntheses of polytitanium compound without chlorine as molybdenum absorbent for $$^{99}$$Mo-$$^{99m}$$Tc generator

Niizeki, Tomotake*; Hishinuma, Yukio*; Suzuki, Masashi*; Hasegawa, Yoshio*; Nishikata, Kaori; Kimura, Akihiro; Ishida, Takuya; Tanimoto, Masataka; Tsuchiya, Kunihiko

no journal, , 

JP, 2010-263801   Patent publication (In Japanese)

no abstracts in English

Oral presentation

Structure and property of N-doped titanium dioxide catalyst

Yamaguchi, Daisuke; Koizumi, Satoshi; Hasegawa, Yoshio*; Hishinuma, Yukio*; Suzuki, Masashi*; Kodama, Hiroto*; Onuma, Masato*; Oba, Yojiro*

no journal, , 

From the combined SANS and SAXS profiles, both of the neat and N-doped TiO$$_{2}$$ catalyst was characterized to have a sheet-like shape with thickness of several tens to hundreds of nm and to be composed of sub-unit TiO$$_{2}$$ particles of several nm. On the SANS profile, the N-doped TiO$$_{2}$$ catalyst showed a q-dependence nearly identical to that of neat TiO$$_{2}$$ catalyst, however, of which intensity is three times as large as that of neat TiO$$_{2}$$ catalyst. On the other hand, by SAXS measurement, hardly any difference was observed between neat TiO$$_{2}$$ catalyst and N-doped one. The analysis of those obtained SANS and SAXS profiles suggests that the localization of doped N atoms at the surface of TiO$$_{2}$$ particles and hence TiO$$_{2}$$-core/N-shell structure can be inferred for the N-doped TiO$$_{2}$$ material.

Oral presentation

Structural analysis for visible light reactive nitrogen-doped titanium oxide

Yamaguchi, Daisuke; Koizumi, Satoshi; Hasegawa, Yoshio*; Hishinuma, Yukio*; Suzuki, Masashi*; Kodama, Hiroto*; Onuma, Masato*; Oba, Yojiro*

no journal, , 

Among the wide variety of photo-catalytic products titanium dioxide (TiO$$_{2}$$)) is one of the most promising material and various improvement has been attempted. Recently it has been confirmed that the nitrogen (N)-doped TiO$$_{2}$$ can be activated not only by ultraviolet light but also by visible light and thereby an enhancement of the efficiency is attained. However, the difference in structure between bare TiO$$_{2}$$ and N-doped one has not yet been fully clarified despite the considerable structural analyses by using X-ray diffraction (XRD) or microscopy. In this study the structure of N-doped TiO$$_{2}$$ was studied by small-angle neutron (SANS) and X-ray scattering (SAXS) methods by profiting the considerable difference of the scattering contrast of N atom to the neutron and to the X-ray. The resultant SANS and SAXS profiles are different between them, especially at high q region of (q$$geq$$1(nm$$^{-1}$$), where q denotes the magnitude of scattering vector. This result can be interpreted as the localization of N atoms at around the surface area.

Oral presentation

Structure analysis for visible light photocatalytic titanium dioxide by using small-angle scattering

Yamaguchi, Daisuke; Noda, Yohei; Koizumi, Satoshi; Hasegawa, Yoshio*; Hishinuma, Yukio*; Suzuki, Masashi*; Kodama, Hiroto*; Onuma, Masato*; Oba, Yojiro*

no journal, , 

The structure of nitrogen (N)-doped titanium dioxide (TiO$$_{2}$$), which is a visible light photocatalyst, was investigated by small-angle neutron (SANS) and X-ray scattering (SAXS) methods. The bare TiO$$_{2}$$ was fabricated by sol-gel method and possessed a characteristic length of ca. 10 nm due to some regularity consisting of TiO$$_{2}$$ particles and pores. In the air, bare TiO$$_{2}$$ and N-doped TiO$$_{2}$$ specimens showed a similar scattering profiles each other for both of SANS and SAXS measurements. A slight increase of scattering intensity was observed for N-doped TiO$$_{2}$$ specimen only on the SANS profile. To confirm whether the slight difference in SANS profiles between bare TiO2$$_{2}$$ and N-doped TiO$$_{2}$$ specimens was due to the doped N atoms, both of bare TiO$$_{2}$$ and N-doped TiO$$_{2}$$ specimens were soaked in the mixture of H$$_{2}$$O/D$$_{2}$$O = 55/45 (w/w) mixture, of which scattering contrast for neutron is the same as TiO$$_{2}$$, and measured by SANS. The resultant SANS profiles of soaked bare TiO$$_{2}$$ and N-doped TiO$$_{2}$$ specimens were distinctly different each other and the scattering from doped N atoms, which gives the information of their distribution was captured.

Oral presentation

A Complemental use of SANS and SAXS for the analysis of multi-component hierarchical structure

Yamaguchi, Daisuke; Noda, Yohei; Koizumi, Satoshi; Hasegawa, Yoshio*; Hishinuma, Yukio*; Suzuki, Masashi*; Kodama, Hiroto*; Onuma, Masato*; Oba, Yojiro*; Yuasa, Takeshi*; et al.

no journal, , 

Nowadays industrial materials tend to include a variety of additives and to be a composite of them to satisfy a high request for intelligent function and durability. Elucidation of such a multi-component and hierarchical structure is really a tough work but indispensable to learn the fundamentals of relation between the structure and property and to attain a reasonable improvement of those materials. Combined use of small-angle neutron scattering (SANS) and small-angle X-ray scattering (SAXS) often gives a good clue to decompose the total scattering of the organic/inorganic composite into the partial scattering from a particular component. Two examples will be demonstrated here for extracting the structural information from the composite specimen via this method; one is the distribution of the dopant nitrogen atoms in the porous photocatalyst and the other is the dispersion state of fillers in the rubber matrix.

Oral presentation

Study on capillary electrophoresis with sample collection using highly emissive probes for analysis of actinide in radioactive wastes

Haraga, Tomoko; Hishinuma, Yukio*; Kaneta, Yui*; Ishimori, Kenichiro; Takahashi, Kuniaki

no journal, , 

no abstracts in English

Oral presentation

Sorption characteristics of ceramics nanosheets for platinum-group substances in high-level radioactive liquid waste, 1; Fundamental study on trial production and selection of nanosheets

Amamoto, Ippei; Yokozawa, Takuma; Kobayashi, Hidekazu; Taguchi, Tomitsugu; Hasegawa, Yoshio*; Hishinuma, Yukio*; Yamakawa, Atsushi*

no journal, , 

no abstracts in English

Oral presentation

Sorption characteristics of ceramics nanosheets for platinum-group substances in high-level radioactive liquid waste

Hasegawa, Yoshio*; Hishinuma, Yukio*; Amamoto, Ippei; Yokozawa, Takuma; Kobayashi, Hidekazu; Taguchi, Tomitsugu; Yamakawa, Atsushi*; Suzuki, Masashi*

no journal, , 

no abstracts in English

Oral presentation

Sorption characteristics of ceramics nanosheets for platinum-group substances in high-level radioactive liquid waste, 2; Manufacture of nanosheets and their sorption behaviour

Yamakawa, Atsushi*; Amamoto, Ippei; Yokozawa, Takuma; Kobayashi, Hidekazu; Taguchi, Tomitsugu; Hasegawa, Yoshio*; Hishinuma, Yukio*

no journal, , 

no abstracts in English

Oral presentation

Identification of doped nitrogen in photocatalytic TiO$$_{2}$$

Yamaguchi, Daisuke; Hasegawa, Yoshio*; Hishinuma, Yukio*; Kodama, Hiroto*; Suzuki, Masashi*; Koizumi, Satoshi*; Noda, Yohei; Oba, Yojiro*

no journal, , 

Anion doped titanium dioxide (TiO$$_{2}$$), which is expected to exhibit an improved photo-catalytic property due to the effect of narrowing in the band gap, was investigated by small-angle neutron scattering (SANS). Among wide variety of photo-catalytic products, TiO$$_{2}$$ is one of the most promising and various improvements have been done. On the functional aspect it has been confirmed that for instance, nitrogen (N) doped TiO$$_{2}$$ can be activated not only by the photons of which wavelength is corresponding to ultraviolet but also by those of visible light and thereby an enhancement of the efficiency is attained. However, the difference in structure between bare TiO$$_{2}$$ and N-doped TiO$$_{2}$$ has not yet definitively clarified despite the considerable structural analyses by using X-ray probes. With profiting from an enhanced scattering length of N atoms to the neutron beam, an attempt to capture the distribution of N atoms in the N-doped TiO$$_{2}$$ by SANS is presented here.

Oral presentation

Identification of doped nitrogen in photocatalytic TiO$$_{2}$$

Yamaguchi, Daisuke; Hasegawa, Yoshio*; Hishinuma, Yukio*; Suzuki, Masashi*; Kodama, Hiroto*; Koizumi, Satoshi*; Noda, Yohei; Oba, Yojiro*

no journal, , 

Anion, e.g., nitrogen (N) doped titanium dioxide (TiO$$_{2}$$), being expected to exhibit an improved photo-catalytic property due to the effect of narrowing in the band gap, was investigated by small- (SANS) and wide-angle neutron scattering. Among wide variety of photo-catalytic products, TiO$$_{2}$$ is one of the most promising and various improvements have been done. However, the difference in structure between bare TiO$$_{2}$$ and N-doped TiO$$_{2}$$ has not yet definitively clarified despite the considerable structural analyses by X-ray diffraction or X-ray photoemission spectroscopy. With profiting from an enhanced scattering length of N atoms to the neutron beam, an attempt to capture the distribution of N atoms in N-doped TiO$$_{2}$$ by SANS was conducted. Specimens prepared with and without N-doping were compared. The traces of doped N species on the scattering profiles might be brought out from invisible differences with contrast variation method employing the soakage in tuned H$$_{2}$$O/D$$_{2}$$O mixture possessing nearly the same scattering length density as TiO$$_{2}$$ component.

Oral presentation

Development of physical property measurement technique for molten oxide fuel by high-speed electrical pulse heating

Watanabe, Masashi; Morimoto, Kyoichi; Kato, Masato; Konashi, Kenji*; Arita, Yuji*; Watanabe, Hiromichi*; Hishinuma, Yukio*

no journal, , 

no abstracts in English

21 (Records 1-20 displayed on this page)