Induced electronic modification of Pt nanoparticles deposited onto graphitic domains of carbon materials by UV irradiation

• DOI: 10.1016/j.elecom.2012.12.028
• Publication Date: 2013-01-15T21:36:20Z
• Authors: Jiwei Ma; Aurelien Habrioux; Marcin Pisarek; Adam Lewera; Nicolas Alonso-Vante
• Keywords: Platinum nanoparticles; Carbon fibers; Deposition

Platinum nanoparticles deposited either by the photodeposition method or by the carbonyl chemical route are thought to be electronically modified onto carbon support. The deposition method is responsible for a controlled heterogeneous nucleation of platinum nanoparticles onto the substrate. By coupling results obtained from CO stripping experiments and X-ray photoelectron spectroscopy (XPS), there was a strong interaction between graphitic domains of carbonaceous supports and platinum nanoparticles. This phenomenon is at the origin of an increase of CO tolerance of the catalyst.