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Lei, Y.-J.*; Matsumura, Daiju; 15 of others*
Nature Communications (Internet), 15, p.3325_1 - 3325_12, 2024/04
Times Cited Count：30 Percentile：98.78(Multidisciplinary Sciences)Misaki, Satoshi*; Miwa, Hiroko*; Ito, Takashi; Yoshida, Takefumi*; Hasegawa, Shingo*; Nakamura, Yukina*; Tokutake, Shunta*; Takabatake, Moe*; Shimomura, Koichiro*; Chun, W.-J.*; et al.
ACS Catalysis, 13(18), p.12281 - 12287, 2023/09
Times Cited Count：6 Percentile：48.53(Chemistry, Physical)Utsumi, Taro*; Terasawa, Toshiharu*; Kudo, Isamu*; Suzuki, Tsuneo*; Nakayama, Tadachika*; Suematsu, Hisayuki*; Ogawa, Toru
Journal of the Ceramic Society of Japan, 128(2), p.96 - 100, 2020/02
Times Cited Count：5 Percentile：21.60(Materials Science, Ceramics)A method to control the millimeter-sized open porosity in geopolymer foam was attempted to produce hydrogen recombining supports for radioactive waste canisters. The raw materials were mixed with silicon powder as a foaming agent. Geopolymer foams with open porosities as high as 81% were obtained by a water bath treatment before pouring the slurry into the mold. The increase in the open porosity of geopolymer foam was observed by an increase in the water bath treatment time. It was thought that the viscosity of slurry increase induced the pores trapped inside the geopolymer foam and connected to form millimeter-sized and open pores. It was concluded that a simple method with a foaming agent and a water bath treatment to prepare geopolymer foams with high open porosity was developed.
Edao, Yuki; Sato, Katsumi; Iwai, Yasunori; Hayashi, Takumi
Journal of Nuclear Science and Technology, 53(11), p.1831 - 1838, 2016/11
Times Cited Count：9 Percentile：60.04(Nuclear Science & Technology)Ikeda, Takashi; Hou, Z.*; Chai, G.-L.*; Terakura, Kiyoyuki*
Hyomen Kagaku, 36(7), p.345 - 350, 2015/07
Carbon alloy catalysts (CACs) are one of promising candidates for platinum-substitute cathode catalysts for polymer electrolyte fuel cells. We have investigated possible mechanisms of oxygen reduction reactions (ORRs) for CACs via first-principles-based molecular dynamics simulations. In this contribution, we review possible ORRs at likely catalytic sites of CACs suggested from our simulations.
photocatalystsChoi, Y.; Umebayashi, Tsutomu; Yoshikawa, Masahito
Journal of Materials Science, 39(5), p.1837 - 1839, 2004/03
Times Cited Count：231 Percentile：97.80(Materials Science, Multidisciplinary)Carbon (C)-doped anatase TiO 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 lattice. Diffuse reflectance spectroscopy (DRS) showed that the optical absorption edge of the C-doped anatase TiO shifted to lower energy compared with that of pure anatase TiO. 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 leads to a photocatalytic decomposition of MB under visible light irradiation.
photocatalysts by oxidative annealing of TiCChoi, Y.; Umebayashi, Tsutomu; Yamamoto, Shunya; Tanaka, Shigeru
Journal of Materials Science Letters, 22(17), p.1209 - 1211, 2003/09
Times Cited Count：48 Percentile：77.75(Materials Science, Multidisciplinary)no abstracts in English
Ohashi, Hirofumi; Inagaki, Yoshiyuki
JAERI-Tech 2003-046, 47 Pages, 2003/05
JAERI-Tech-2003-046.pdf:3.15MB
no abstracts in English
Nishihata, Yasuo; Mizuki, Junichiro; Akao, Takahiro; Tanaka, Hirohisa*; Uenishi, Mari*; Kimura, Mareo*; Okamoto, Tokuhiko*; Hamada, Noriaki*
Nature, 418(6894), p.164 - 167, 2002/07
Times Cited Count：1019 Percentile：99.82(Multidisciplinary Sciences)no abstracts in English
-anatase film on Si(001) substrate with TiN and SrTiO
as buffer layersSugiharuto; Yamamoto, Shunya; Sumita, Taishi; Miyashita, Atsumi
Journal of Physics; Condensed Matter, 13(13), p.2875 - 2881, 2001/04
Times Cited Count：15 Percentile：61.02(Physics, Condensed Matter)An epitaxial TiO-anatase thin film was grown on the Si(001) substrate with SrTiO/TiN as the buffer layers by pulsed laser deposition technique under an oxygen gas supply. The characterization of the epitaxial TiO-anatase film was performed using the X-ray diffraction method. The crystallographic relationships between the TiO-anatase film and SrTiO/TiN buffer layers were analyzed by the 
-2 scan and pole figure measurement. The growth direction of the films was determined as 
/ 
/ 
/ 
and their in-plane relationship 
// 
// 
// 
. The crystalline quality of TiO-anatase was examined by the rocking curve analysis. The composition of the thin film packaging was characterized by Rutherford backscattering spectrometry (RBS) using 2.0 MeV 
He beam.
Tanaka, Hirohisa*; Uenishi, Mari*; Tan, Isao*; Kimura, Mareo*; Mizuki, Junichiro; Nishihata, Yasuo
SAE 2001 World Congress Paper; Advanced Catalytic Converters and Substrates for Gasoline Emission Systems (SP1573), p.1 - 8, 2001/00
The catalyst of the crystalline ceramics known as a perovskite-type oxide was designed and controlled at the atomic level in order to create a new function for self-regeneration of precious metals in a usage ambience without auxiliary treatment.
Yamagishi, Isao; Yamaguchi, Isoo; Kubota, Masumitsu*
JAERI-Research 2000-038, 40 Pages, 2000/09
JAERI-Research-2000-038.pdf:1.33MB
no abstracts in English
; Hirata, Masaru; Yahata, Taneaki
Journal of Nuclear Science and Technology, 28(3), p.228 - 238, 1991/03
no abstracts in English
Inorganica Chimica Acta, 140, p.279 - 282, 1987/00
no abstracts in English
; Nekoya, Shinichi; ; ; ; ; Okamoto, Yoshizo
JAERI-M 8309, 73 Pages, 1979/07
no abstracts in English
; ; ;
Nihon Genshiryoku Gakkai-Shi, 21(4), p.344 - 350, 1979/00
Times Cited Count：2no abstracts in English
;
JAERI-M 7949, 111 Pages, 1978/10
no abstracts in English
;
Inorg.Nucl.Chem.Lett., 14(10), p.341 - 345, 1978/10
Times Cited Count：3no abstracts in English
Ito, Kanae; Yamada, Takeshi*; Shinohara, Akihiro*; Takata, Shinichi; Kawakita, Yukinobu
no journal, ,
Aihara, Haruka; Watanabe, So; Nomura, Kazunori; Kamiya, Yuichi*
no journal, ,
