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

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.

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► Photo-induced electronic modification of Pt NPs onto graphitic domains of carbon
► Tailoring the activity and tolerance of Pt NPs by choosing supporting material
► The activity and tolerance of Pt NPs can be tailored by reliable syntheses route.
► The structure of materials is Key for synthesizing tolerant catalysts.
► The synthesis technique to create metal-support interaction is evidenced.