Charge transfer, lattice distortion, and quantum confinement effects in Pd, Cu, and Pd–Cu nanoparticles; size and alloying induced modifications in binding energy | Zendy

Saurabh K. Sengar | Zendy; B. R. Mehta | Zendy; Govind Gupta | Zendy

Open Access

Charge transfer, lattice distortion, and quantum confinement effects in Pd, Cu, and Pd–Cu nanoparticles; size and alloying induced modifications in binding energy

Author(s) -

Saurabh K. Sengar,

B. R. Mehta,

Govind Gupta

Publication year - 2011

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.3590272

Subject(s) - alloy , quantum dot , nanoparticle , lattice (music) , materials science , chemical physics , binding energy , valence (chemistry) , condensed matter physics , potential well , molecular physics , chemistry , atomic physics , nanotechnology , metallurgy , physics , organic chemistry , acoustics

In this letter, effect of size and alloying on the core and valence band shifts of Pd, Cu, and Pd–Cu alloy nanoparticles has been studied. It has been shown that the sign and magnitude of the binding energy shifts is determined by the contributions of different effects; with quantum confinement and lattice distortion effects overlapping for size induced shifts in case of core levels and lattice distortion and charge transfer effects overlapping for alloying induced shifts at smaller sizes. These results are important for understanding gas molecule-solid surface interaction in metal and alloy nanoparticles in terms of valance band positions

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