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Journal Articles

Ultra-fine CeO$$_{2}$$ particles triggered strong interaction with LaFeO$$_{3}$$ framework for total and preferential CO oxidation

Zheng, Y.*; Xiao, H.*; Li, K.*; Wang, Y.*; Li, Y.*; Wei, Y.*; Zhu, X.*; Li, H.-W.*; Matsumura, Daiju; Guo, B.*; et al.

ACS Applied Materials & Interfaces, 12(37), p.42274 - 42284, 2020/09

https://doi.org/10.1021/acsami.0c10271
 Times Cited Count：22 Percentile：74.29(Nanoscience & Nanotechnology)

Journal Articles

$$^{151}$$Eu-M$"o$ssbauer spectroscopic study of the fluorite-type oxide solid solutions, Eu$$_{y}$$M$$_{1-y}$$O$$_{2-y/2}$$ (M=Zr,Ce)(0$$leq$$y$$leq$$1.0)

Masaki, Nobuyuki; Guillermo, N. R. D.; Otobe, Haruyoshi; Nakamura, Akio; Izumiyama, Yuki*; Hinatsu, Yukio*

Advances in Science and Technology, 29, p.1233 - 1240, 2000/00

no abstracts in English

Oral presentation

Precipitation of Pt nanoparticles on CeO$$_{2}$$ films using electron beams and $$gamma$$-rays

Yamamoto, Shunya; Sugimoto, Masaki; Miyashita, Atsumi; Hakoda, Teruyuki; Yamaki, Tetsuya; Mori, Toshiyuki*

no journal, , 

Platinum modified with cerium oxide (Pt-CeO$$_{x}$$) is considered as promising cathode materials for use in polymer membrane electrolyte fuel cells. A key process to make this active is formation of highly dispersed Pt nanoparticles on a CeO$$_{2}$$ surface. Therefore, there is a strong motivation for us to use this radiation technique for precipitation of the Pt nanoparticles on CeO$$_{2}$$ films, which would be expected to be a model electrocatalyst of Pt-CeO$$_{x}$$. We deposited the CeO$$_{2}$$ films on a SiO$$_{2}$$ substrate by magnetron sputtering. The CeO$$_{2}$$ films in an aqueous solution containing H$$_{2}$$PtCl$$_{6}$$ and C$$_{2}$$H$$_{5}$$OH were irradiated with 2 MeV electron beams and $$^{60}$$Co $$gamma$$-rays at 50 kGy at maximum. The detailed analysis revealed homogeneous precipitation of metallic Pt by the irradiation with both the radiations, suggesting high applicability of the radiation-induced precipitation method to the preparation of the model Pt-CeO$$_{x}$$ electrocatalysts.

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