Jump to main content
Jump to site search

Issue 33, 2012
Previous Article Next Article

Electronic properties and charge transfer phenomena in Pt nanoparticles on γ-Al2O3: size, shape, support, and adsorbate effects

Author affiliations

Abstract

This study presents a systematic detailed experimental and theoretical investigation of the electronic properties of size-controlled free and γ-Al2O3-supported Pt nanoparticles (NPs) and their evolution with decreasing NP size and adsorbate (H2) coverage. A combination of in situ X-ray absorption near-edge structure (XANES) and density functional theory (DFT) calculations revealed changes in the electronic characteristics of the NPs due to size, shape, NP–adsorbate (H2) and NP–support interactions. A correlation between the NP size, number of surface atoms and coordination of such atoms, and the maximum hydrogen coverage stabilized at a given temperature is established, with H/Pt ratios exceeding the 1 : 1 ratio previously reported for bulk Pt surfaces.

Graphical abstract: Electronic properties and charge transfer phenomena in Pt nanoparticles on γ-Al2O3: size, shape, support, and adsorbate effects

Back to tab navigation

Supplementary files

Publication details

The article was received on 08 Jun 2012, accepted on 28 Jun 2012 and first published on 02 Jul 2012


Article type: Paper
DOI: 10.1039/C2CP41928A
Citation: Phys. Chem. Chem. Phys., 2012,14, 11766-11779
  •   Request permissions

    Electronic properties and charge transfer phenomena in Pt nanoparticles on γ-Al2O3: size, shape, support, and adsorbate effects

    F. Behafarid, L. K. Ono, S. Mostafa, J. R. Croy, G. Shafai, S. Hong, T. S. Rahman, S. R. Bare and B. Roldan Cuenya, Phys. Chem. Chem. Phys., 2012, 14, 11766
    DOI: 10.1039/C2CP41928A

Search articles by author

Spotlight

Advertisements