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Report No.

Production of platinum nanoparticles using a few ten keV electron beams and application to catalytic reactions

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

In the present study, the reduction of PtCl$$_{4}$$$$^{2-}$$ ions and subsequent formation of Pt particles were examined for a few tens keV EB irradiation of PtCl$$_{4}$$$$^{2-}$$ ion solution in the presence of 5-20wt% ethanol as an OH radical scavenger. As a result, the reduction of PtCl$$_{4}$$$$^{2-}$$ 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 a primary particle through reduction of PtCl$$_{4}$$$$^{2-}$$ ions. Moreover, these Pt particles was observed to have hydrogen dissociation activity and oxidation activity.



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