Zobrazeno 1 - 10
of 46
pro vyhledávání: '"Junichiro Kugai"'
Autor:
Takao A. Yamamoto, Shun Fujieda, Junichiro Kugai, Takashi Nakagawa, Naoto Uegaki, Satoshi Seino
Publikováno v:
RADIOISOTOPES. 69:155-161
Autor:
Shingo Tanaka, Noboru Taguchi, Junichiro Kugai, Satoshi Seino, Takao A. Yamamoto, Takashi Nakagawa
Publikováno v:
Journal of Nanoscience and Nanotechnology. 18:5738-5748
Carbon-supported Pt, Pt-Cu, and Pt-Ru nanoparticles were prepared by an alcohol reduction method in the presence of carboxylates and phosphinate in order to investigate the role of these stabilizers in the nanoparticle formation process and the effec
Autor:
Takashi Nakagawa, Shingo Tanaka, Takao A. Yamamoto, Junichiro Kugai, Hirohisa Yamada, Satoshi Seino
Publikováno v:
Journal of Electroanalytical Chemistry. 897:115596
Phosphinate and citrate ions are effective stabilizers for aqueous phase synthesis of platinum-based nanoparticles. In the present study, specific adsorption/desorption of stabilizers on platinum surface was investigated using an electrochemical quar
Autor:
Yoshiyuki Matsuura, Satoshi Seino, Hiroaki Nitani, Yuji Ohkubo, Hiroaki Otake, Tomohisa Okazaki, Takashi Nakagawa, Junichiro Kugai, Takao A. Yamamoto
Publikováno v:
Radiation Physics and Chemistry. 133:67-71
The process of nanoparticle formation by radiation chemical synthesis in a heterogeneous system has been investigated. Carbon-supported Pt-based bimetallic nanoparticles were synthesized using a high-energy electron beam. Rh, Cu, Ru, and Sn were used
Autor:
Takao A. Yamamoto, Hiroaki Nitani, Tomohisa Okazaki, Junichiro Kugai, Takashi Nakagawa, Yuji Ohkubo, Satoshi Seino
Publikováno v:
Journal of Nuclear Science and Technology. 54:472-480
The process of nanoparticle formation by radiochemical synthesis in a heterogeneous system has been investigated considering the effects of the metal ion location in the reaction medium. PtCu nanoparticles supported on carbon and γ-Fe2O3 were synthe
Autor:
Takao A. Yamamoto, Junichiro Kugai, Tomohisa Okazaki, Satoshi Seino, Takashi Nakagawa, Shingo Tanaka
Publikováno v:
International Journal of Hydrogen Energy. 42:2984-2995
Carbon-supported Pt–Cu nanoparticles were prepared by alcohol reduction method in the presence of carboxylate stabilizers with different molecular structure (malonate, succinate, adipate, and citrate). The longer was the carbon chain of stabilizer,
Publikováno v:
Applied Catalysis A: General. 528:67-73
The detailed structures of bimetallic Pd-Cu on various CeO 2 and Al 2 O 3 supports were investigated by X-ray absorption technique in-situ in hydrogen and WGS conditions. No indication of the neighboring Pd atoms in both Pd- K edge and Cu- K edge EXA
Publikováno v:
Thin Solid Films. 604:63-68
A novel method for preparing thin Au films directly on resin substrates using an electron beam was developed. The thin Au films were prepared on a resin substrate by the reduction of Au ions in an aqueous solution via irradiation with a high-energy e
Autor:
Ryuji Yokochi, Takayuki Doi, Junichiro Kugai, Minoru Inaba, Michihiro Hashinokuchi, Wataru Akimoto
Publikováno v:
Solid State Ionics. 285:222-226
Molybdenum was added to nickel/Sm2O3-doped ceria (Ni/SDC) cermets by a MoCl5 impregnation method, and the activity of the resulting Ni–Mo/SDC cermets was evaluated as anodes in ammonia-fueled solid oxide fuel cells (SOFCs) in the temperature range
Autor:
Tomohisa Okazaki, Junichiro Kugai, Takao A. Yamamoto, Satoshi Seino, Yuji Ohkubo, Takashi Nakagawa
Publikováno v:
MRS Advances. 1:427-432
PtCu nanoparticles were synthesized with different pH and support conditions using radiochemical process. The nanoparticle structures were characterized by transmission electron microscopy, inductively coupled plasma atomic emission spectrometry, X-r