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Report No.

Preparation of nano-sized platinum particles using low energy electron beams, and application to catalytic reaction

Isozumi, Yukihiro; Hakoda, Teruyuki; Yamamoto, Shunya; Aritani, Hirofumi*; Yoshikawa, Masahito

In the present study, the reduction of PtCl$$_{6}$$$$^{2-}$$ ions and subsequent formation of Pt particles were examined for a few tens keV EB irradiation of PtCl$$_{6}$$$$^{2-}$$ ion solution in the presence of 1-20wt% ethanol as an OH radical scavenger. As a result, the reduction of PtCl$$_{6}$$$$^{2-}$$ ions proceeded in whole solution by irradiating only the topmost surface layer of the solution, and these Pt particles with sizes of 2-5 nm would be produced as primary particles through reduction of PtCl$$_{6}$$$$^{2-}$$ ions. Moreover, these Pt particles were observed to have hydrogen dissociation activity and oxidation activity.



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