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Photochemical Synthesis of Naked Palladium Nanoparticles
Petri Ajo,Johanna Puranen,Harri Nieminen,Erik Vartiainen 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2018 NANO Vol.13 No.2
Palladium nanoparticles are widely used in catalysis, sensors, coatings and hydrogen storage devices. This paper reports the one-pot photochemical reduction of Pd(II) alcohol solutions into Pd0 nanoparticle suspensions. The synthesis involves the reduction of [PdCl4]2- dissolved in EtOH/2-PrOH mixtures by the ketyl radicals (Me)2(HO)C generated from 254 nm irradiation, in the absence of other chemical reducing agents. Clusters of 10 nm Pd0 particles thus produced could be separated from their suspensions by microfiltration. Preliminary tests are reported on the catalytic potential of such particles for the thermal dehydrogenation of alcohols.