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Multiple Reaction Paths for CO Oxidation on a 2D SnO x Nano‐Oxide on the Pt(110) Surface: Intrinsic Reactivity and Spillover
Author(s) -
Zheng Jian,
Busch Michael,
Artiglia Luca,
Skála Tomáš,
Rossmeisl Jan,
Agnoli Stefano
Publication year - 2019
Publication title -
advanced materials interfaces
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.671
H-Index - 65
ISSN - 2196-7350
DOI - 10.1002/admi.201801874
Subject(s) - materials science , scanning tunneling microscope , oxide , reactivity (psychology) , photoemission electron microscopy , nano , low energy electron diffraction , x ray photoelectron spectroscopy , photoemission spectroscopy , nanomaterial based catalyst , nanotechnology , analytical chemistry (journal) , crystallography , electron diffraction , diffraction , chemical engineering , nanoparticle , electron microscope , chemistry , optics , physics , medicine , alternative medicine , engineering , pathology , chromatography , metallurgy , composite material
An interface stabilized SnO x /Pt(110) nano‐oxide characterized by a c(2 × 4) surface reconstruction is prepared and characterized by low‐energy electron diffraction (LEED), synchrotron radiation photoemission spectroscopy (SRPES), and scanning tunneling microscopy (STM). Based on the experimental data, atomic models for the nano‐oxide are proposed and then validated by comparing the experimental results with the outcome of first‐principle calculations. The reactivity of the nano‐oxide toward CO is investigated, obtaining that the c(2 × 4) reconstruction efficiently oxidizes CO to CO 2 . The SnO x nano‐oxide on the Pt(110) surface can act as a reservoir for oxygen that can diffuse on the adjacent Pt areas where it oxidizes CO. This spillover effect endows the SnO x /Pt(110) system with enhanced tolerance to CO poisoning.