Single nanoparticle catalyst reconstruction during deNOx reaction over platinum field emitter tip

Barroo, Cédric; Devred, François; Visart de Bocarmé, Thierry; Kruse, Norbert

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Single nanoparticle catalyst reconstruction during deNOx reaction over platinum field emitter tip

par Barroo, Cédric

;Devred, François

;Visart de Bocarmé, Thierry

;Kruse, Norbert

Référence Materials Today: Second Frontiers of Microscopy Virtual Conference (2013-04-24->26)
Publication Non publié, 2013-04-24

Poster de conférence

Résumé :

A field ion/emission microscope was used as a chemical nanoreactor. The catalytic reduction of NO2 on a single platinum catalyst grain is investigated and morphological changes of the catalyst are monitored during reaction (FEM mode) and after reaction (FIM mode) with nanoscale resolution. A drastic change from hemispherical shape towards nearly pyramidal shape occurs. It has been showed that the morphology influences the local catalytic activity in such a way that morphological changes are a prerequisite for the surface reaction to occur.

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