Sulfur oxidation on graphene-supported platinum nanocluster arrays

Beitrag in einer Fachzeitschrift


Details zur Publikation

Autor(en): Düll F, Schwaab V, Späth F, Bauer U, Bachmann P, Steinhauer J, Steinrück HP, Papp C
Zeitschrift: Chemical Physics Letters
Verlag: ELSEVIER SCIENCE BV
Jahr der Veröffentlichung: 2018
Band: 708
Seitenbereich: 165-169
ISSN: 0009-2614


Abstract

Nanocluster arrays grown on a graphene Moire on Rh(1 1 1) are an excellent model system that can bridge the materials gap between single crystals and real catalysts. They feature different adsorption sites like edges, kinks, and facets, but are at the same time well-ordered with a small size distribution. Herein, we used platinum nanocluster arrays to investigate the oxidation of sulfur, which is a common catalyst poison, as a possible route to restore the catalyst. We studied the kinetics in a site-resolved manner with high-resolution XPS, despite the complex shape of the nanoparticles. Since SO3 and SO4 were the only observable SOx surface species, the reaction of S to SO was identified as the rate-determining step. As a secondary process, the displacement of sulfur from edge to facet sites caused by oxygen was observed.


FAU-Autoren / FAU-Herausgeber

Bachmann, Philipp
Lehrstuhl für Physikalische Chemie II
Bauer, Udo Dr.
Lehrstuhl für Physikalische Chemie II
Düll, Fabian
Lehrstuhl für Physikalische Chemie II
Papp, Christian PD Dr.
Lehrstuhl für Physikalische Chemie II
Späth, Florian
Lehrstuhl für Physikalische Chemie II
Steinhauer, Johann
Lehrstuhl für Physikalische Chemie II
Steinrück, Hans-Peter Prof. Dr.
Lehrstuhl für Physikalische Chemie II


Zitierweisen

APA:
Düll, F., Schwaab, V., Späth, F., Bauer, U., Bachmann, P., Steinhauer, J.,... Papp, C. (2018). Sulfur oxidation on graphene-supported platinum nanocluster arrays. Chemical Physics Letters, 708, 165-169. https://dx.doi.org/10.1016/j.cplett.2018.08.026

MLA:
Düll, Fabian, et al. "Sulfur oxidation on graphene-supported platinum nanocluster arrays." Chemical Physics Letters 708 (2018): 165-169.

BibTeX: 

Zuletzt aktualisiert 2019-01-02 um 12:23