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Generation and oxidation of aerosol deposited PdAg nanoparticles

S. Blomberg ; J. Gustafson ; N. M. Martin ; M. E. Messing ; K. Deppert ; Z. Liu ; R. Chang ; V. R. Fernandes ; A. Borg ; Henrik Grönbeck (Kompetenscentrum katalys (KCK)) ; E. Lundgren
Surface Science (0039-6028). Vol. 616 (2013), p. 186-191.
[Artikel, refereegranskad vetenskaplig]

PdAg nanoparticles with a diameter of 10 nm have been generated by an aerosol particle method, and supported on a silica substrate. By using a combination of X-ray Energy Dispersive Spectroscopy and X-ray Photoelectron Spectroscopy it is shown that the size distribution of the particles is narrow and that the two metals form an alloy with a mixture of 75% Pd and 25% Ag. Under oxidizing conditions, Pd is found to segregate to the surface and a thin PdO like oxide is formed similar to the surface oxide previously reported on extended PdAg and pure Pd surfaces.

Nyckelord: PdAg, Alloy, Nanoparticles, HPXPS



Denna post skapades 2013-09-16.
CPL Pubid: 183425

 

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Institutioner (Chalmers)

Kompetenscentrum katalys (KCK)

Ämnesområden

Fysikalisk kemi

Chalmers infrastruktur