Compositional and structural analysis of Fukushima-derived particulates using high-resolution X-ray imaging and synchrotron characterisation techniques

Martin, P. G.*; Jones, C. P.*; Cipiccia, S.*; Batey, D. J.*; Hallam, K. R.*; Satou, Yukihiko; Griffiths, I.*; Rau, C.*; Richards, D. A.*; Sueki, Keisuke*; et al.

Scientific Reports (Internet), 10(1), p.1636_1 - 1636_11, 2020/01

https://doi.org/10.1038/s41598-020-58545-y

Effect of water for the oxygen adsorption on surface of PtCo catalysts

Cui, Y.-T.*; Harada, Yoshihisa*; Niwa, Hideharu*; Oshima, Masaharu*; Hatanaka, Tatsuya*; Nakamura, Naoki*; Ando, Masaki*; Yoshida, Toshihiko*; Ishii, Kenji*; Matsumura, Daiju

NanotechJapan Bulletin (Internet), 11(4), 6 Pages, 2018/08

no abstracts in English

Electronic structure of Pt and Pt-Co nanoparticles with O and O/HO adsorption revealed by in situ XAFS and hard X-ray photoelectron spectroscopy

Cui, Y.*; Harada, Yoshihisa*; Hatanaka, Tatsuya*; Nakamura, Naoki*; Ando, Masaki*; Yoshida, Toshihiko*; Ikenaga, Eiji*; Ishii, Kenji*; Matsumura, Daiju; Li, R.*; et al.

ECS Transactions, 72(8), p.131 - 136, 2016/10

https://doi.org/10.1149/07208.0131ecst

Production of no-carrier-added Cu and applications to molecular imaging by PET and PETIS as a biomedical tracer

Watanabe, Shigeki; Iida, Yasuhiko*; Suzui, Nobuo; Katabuchi, Tatsuya*; Ishii, Satomi; Kawachi, Naoki; Hanaoka, Hirofumi*; Watanabe, Satoshi; Matsuhashi, Shimpei; Endo, Keigo*; et al.

Journal of Radioanalytical and Nuclear Chemistry, 280(1), p.199 - 205, 2009/04

https://doi.org/10.1007/s10967-008-7443-9

Production of Cu as a biotracer and applications to in vivo imaging of Cu in a plant

Watanabe, Shigeki; Ishioka, Noriko; Katabuchi, Tatsuya*; Watanabe, Satoshi; Suzui, Nobuo; Ishii, Satomi; Matsuhashi, Shimpei

no journal, , 

Positron emitter, Cu has been used in medical applications with positron emission tomography (PET). We have developed a novel method in Cu production to obtain Cu-labelled antibodies as a PET reagent. On the other hand, Cu can be used for in vivo imaging of copper in a living plant by positron emitting tracer imaging system (PETIS). Production of Cu was carried out via the Ni(p,n)Cu nuclear reaction. The produced Cu (330 MBq) was purified by an ion-exchange method from the irradiated NiO target. The Cu was obtained with high yield (89%) and high radionuclidic-purity Cu ( 99%). The NiO was recovered in good yield ( 99%). The Cu was added to a plant (soybean) for an imaging experiment and the movement of Cu was visualized by the PETIS. This result shows that Cu can be applied as a useful tracer for not only medical applications and also plant physiological studies.

Production of Cu as a biomedical tracer and applications to in vivo imaging of Cu in a plant

Watanabe, Shigeki; Ishioka, Noriko; Suzui, Nobuo; Ishii, Satomi; Kawachi, Naoki; Katabuchi, Tatsuya*; Watanabe, Satoshi; Matsuhashi, Shimpei

no journal, , 

no abstracts in English

Separation and recovery of platinum group metals from high-level radioactive liquid waste, 3; Adsorption properties by silica-supported adsorbent in radiation field

Ito, Tatsuya; Kim, S.-Y.*; Xu, Y.*; Hitomi, Keitaro*; Ishii, Keizo*; Nagaishi, Ryuji; Kimura, Takaumi

no journal, , 

no abstracts in English

Study on separation of platinum group metals from high level liquid waste using macroporous (MOTDGA-TOA)/SiO-P silica-based absorbent

Ito, Tatsuya; Kim, S.-Y.*; Xu, Y.*; Hitomi, Keitaro*; Ishii, Keizo*; Nagaishi, Ryuji; Kimura, Takaumi

no journal, , 

To research recovering of platinum group metals (PGMs) from high level liquid waste (HLLW) by macroporous silica-based adsorbent, the adsorbent of (MOTDGA-TOA)/SiO-P was developed by impregnating two extractants of N,N'-dimethyl-N,N'-di-n-octyl-thiodiglycolamide (MOTDGA) and tri-n-octylamine (TOA) into a silica/polymer composite support (SiO-P). The adsorbent showed good adsorption property for Pd(II). In addition, the combined use of MOTDGA and TOA improved adsorption of Ru(III) and Rh(III) better than the individual use of them. The usability of adsorbent in radiation fields was further confirmed by irradiation experiments. The adsorbent remained to have adsorption capability for PGMs at least adsorbed dose of 100 kGy, correspomding with one adsorbed by the adsorbent in their adsorption, and showed good retention capability for adsorbed Pd(II) even at the adsorbed dose of 800 kGy.

Separation and recovery of platinum group metals from high-level radioactive liquid waste, 7; Comparing investigation of (Crea-TOA)/SiO-P and (MOTDGA-TOA)/SiO-P

Ito, Tatsuya; Kim, S.-Y.*; Xu, Y.*; Hitomi, Keitaro*; Ishii, Keizo*; Nagaishi, Ryuji; Kimura, Takaumi

no journal, , 

no abstracts in English

Current status of R&D on minor actinide separation process with CHON Extractants in JAEA

Matsumura, Tatsuro; Ban, Yasutoshi; Suzuki, Hideya; Tsubata, Yasuhiro; Hotoku, Shinobu; Tsutsui, Nao; Suzuki, Asuka; Toigawa, Tomohiro; Kurosawa, Tatsuya*; Shibata, Mitsunobu*; et al.

no journal, , 

To continue the utilization of the nuclear fission energy, the management of the high-level radioactive waste is one of the most important issues to be solved. Partitioning and Transmutation technology is expected to be effective to mitigate the burden of the HLW disposal by reducing the radiological toxicity and heat generation. JAEA has been conducting R&D on the MA separation process to remove of MA from HLW and supply the recovered MA to the transmutation system such as ADS. The MA separation process contains three steps. For An(III)+RE recovery process, we developed TDdDGA which has very high performance to recover of MA from high level waste. HONTA and ADAAM were developed for An(III)/RE separation process and Am/Cm separation process respectively. All extractants satisfy CHON principle to minimization of the secondary waste from the process. The separation performances of the flowsheets were evaluated by continuous extraction tests using simulated and genuine high level liquid waste.